what is the current (in a) when a typical static charge of 0.230 µc moves from your finger to a metal doorknob in 2.30 µs?
Answers
The flow of electric charge or the movement of electrons through a conductor is referred to as current.
What is current?
The current when a typical static charge of 0.230 µC moves from your finger to a metal doorknob in 2.30 µs is 0.100 mA.The flow of electric charge or the movement of electrons through a conductor is referred to as current. The fundamental unit of electric charge is the coulomb, which is defined as the charge transported by a constant current of one ampere in one second.Ampere is a unit of measurement used to measure the electric current in the International System of Units (SI). The SI unit for electric charge is the coulomb (C), whereas the time unit is the second (s).
What is static charge?
An electrostatic charge is a stationary electric charge that has built up on a material's surface. When objects with different charges are brought near each other, an electrostatic discharge may occur. This electric discharge might be static electricity or spark.Let's come to the question asked. We know that the typical static charge is 0.230 µC (micro Coulombs).We know that the time taken is 2.30 µs (micro-seconds).We need to calculate the current, and we can use the formula given below;I=Q/tI = currentQ = Charge t = timeLet's insert the values in the formula to get the answer.I = Q/tI = 0.230*10^-6 C / 2.30*10^-6 sI = 0.100 mA or 1.00*10^-4 AThe current is 0.100 mA or 1.00*10^-4 A when a typical static charge of 0.230 µC moves from your finger to a metal doorknob in 2.30 µs.
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Related Questions
Silver has
5.8×10 28
free electrons per m 3
. If the current in a 2 mm radius silver wire is 5.0 A, find the velocity with which the electrons drift in the wire.
Answers
The velocity with which the electrons drift in the silver wire is approximately 1.58 x 10^-4 m/s.
To find the velocity with which electrons drift in a silver wire, we can use the formula:
I = nAvq
where:
I is the current (in amperes),
n is the number of free electrons per unit volume (in m^3),
A is the cross-sectional area of the wire (in m^2),
v is the drift velocity of electrons (in m/s), and
q is the charge of an electron (approximately 1.6 x 10^-19 C).
Given:
I = 5.0 A (current)
n = 5.8 x 10^28 m^-3 (number of free electrons per m^3)
A = πr^2 = π(0.002 m)^2 (cross-sectional area)
q = 1.6 x 10^-19 C (charge of an electron)
First, we calculate the cross-sectional area of the wire:
A = π(0.002 m)^2 = 1.2566 x 10^-5 m^2
Next, we rearrange the formula and solve for v:
v = I / (nAq)
v = 5.0 A / (5.8 x 10^28 m^-3 * 1.2566 x 10^-5 m^2 * 1.6 x 10^-19 C)
v ≈ 1.58 x 10^-4 m/s
Therefore, the velocity with which the electrons drift in the silver wire is approximately 1.58 x 10^-4 m/s.
The drift velocity represents the average velocity at which the electrons move in the wire under the influence of an electric field. It is relatively small due to frequent collisions with lattice ions and other electrons within the wire.
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What force is needed to give a 0.25 kg arrow an acceleration of 196 m/s² question 10 options: 0.25n 49n 196n 748n
Answers
The force that is needed to accelerate the arrow is 49 Newtons.
To determine magnitude of the force needed to give a 0.25 kg arrow an acceleration of 196 m/s², we can use the equation of force:
F = ma
where F is the force, m is the mass, and a is the acceleration.
Given that m = 0.25 kg and a = 196 m/s², we can substitute these values into the equation and solve for F:
F = (0.25 kg)(196 m/s²)
F = 49 N
So the force needed to give a 0.25 kg arrow an acceleration of 196 m/s² is 49 N. This is the correct answer out of the options given.
To arrive at this answer we used Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. Thus, we were able to use the equation "F = ma" (where F is force, m is mass and a is acceleration) to solve for the force required to accelerate the arrow at 196 m/s².
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a) Sketch the phase change of water from -20°C to 100°C. b) Calculate the energy required to increase the temperature of 100.0 g of ice from -20°C to 0°C. c) 1.0 mole of gas at 0°C is placed into a container During an isothermal process, the volume of the gas is expanded from 5.0 L to 10.0 L. How much work was done by the gas during this process? d) Sketch a heat engine. How does the net heat output of the engine relate to the Second Law of Thermodynamics? Explain. e) How are the number of microstates related to the entropy of a system? Briefly explain. f) Heat is added to an approximately reversible system over a time interval of ti to tp 1, How can you determine the change in entropy of the system? Explain.
Answers
The number of microstates is directly related to the entropy of a system.
a) Sketch the phase change of water from -20°C to 100°C:
The phase change of water can be represented as follows:
-20°C: Solid (ice)
0°C: Melting point (solid and liquid coexist)
100°C: Boiling point (liquid and gas coexist)
100°C and above: Gas (steam)
b) Calculate the energy required to increase the temperature of 100.0 g of ice from -20°C to 0°C:
The energy required can be calculated using the specific heat capacity (c) of ice and the equation Q = mcΔT, where Q is the energy, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.
The specific heat capacity of ice is approximately 2.09 J/g°C.
Q = (100.0 g) * (2.09 J/g°C) * (0°C - (-20°C))
Q = 41.8 J
c) Calculate the work done by the gas during the isothermal process:
During an isothermal process, the work done by the gas can be calculated using the equation W = -PΔV, where W is the work done, P is the pressure, and ΔV is the change in volume.
Since the process is isothermal, the temperature remains constant at 0°C, and the ideal gas equation can be used: PV = nRT, where n is the number of moles, R is the gas constant, and T is the temperature.
To calculate the work done, we need to find the pressure of the gas. Using the ideal gas equation:
P₁V₁ = nRT
P₂V₂ = nRT
P₁ = (nRT) / V₁
P₂ = (nRT) / V₂
The work done is given by:
W = -P₁V₁ * ln(V₂/V₁)
Substitute the given values of V₁ = 5.0 L and V₂ = 10.0 L, and the appropriate values for n, R, and T to calculate the work done.
d) Sketch a heat engine and explain the relation to the Second Law of Thermodynamics:
A heat engine is a device that converts thermal energy into mechanical work. It operates in a cyclic process involving the intake of heat from a high-temperature source, converting a part of that heat into work, and rejecting the remaining heat to a low-temperature sink.
According to the Second Law of Thermodynamics, heat naturally flows from a region of higher temperature to a region of lower temperature, and it is impossible to have a complete conversion of heat into work without any heat loss. This principle is known as the Kelvin-Planck statement of the Second Law.
The net heat output of the heat engine, Q_out, represents the amount of heat energy that cannot be converted into work. It is given by Q_out = Q_in - W, where Q_in is the heat input to the engine and W is the work output.
The relation to the Second Law is that the net heat output (Q_out) of the engine must always be greater than zero. In other words, it is not possible to have a heat engine that operates with 100% efficiency, converting all the heat input into work without any heat loss. The Second Law of Thermodynamics imposes a fundamental limitation on the efficiency of heat engines.
e) The number of microstates is related to the entropy of a system:
The entropy of a system is a measure of the number of possible microstates (Ω) that correspond to a given macrostate. Microstates refer to the specific arrangements and configurations of particles or energy levels in the system.
Entropy (S) is given by the equation S
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which force affect the aeroplane and ship
Answers
Explanation:
the force effect the aeroplane and ship are Gravity and drug
Answer:
The answer is GRAVITY and DRUGS
Explanation:
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Blood contains different parts mainly plasma and red blood cells when people give blood there are machines that separate
Answers
The correct answer is centrifuge.
Your complete blood is drawn out during an apheresis procedure, which is used to donate platelets. Your blood is spun in a centrifuge to separate your plasma, platelets, and red blood cells. As the blood is divided, the heavier reds cells drop to the bottom and are given back to you.
Between the liquid plasma and the platelets that are tracked into a small pouch that is wrapped around the centrifuge cylinder as the liquid plasma rises. When you donate blood, your spleen releases stockpiled platelets into your bloodstream in an effort to stop the bleeding.
As a result, more platelets and plasma are collected, enabling you to donate one, two, or even three doses of platelets in a single visit. Your healthy bone marrow quickly starts producing additional platelets from stem cells to replace those that have been given while this is happening.
Since only one donor is used for the donation, platelet donors are able to provide patients with a greater amount and higher-quality platelets to aid in their fight for survival.
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What term describes how far an object moves in a certain amount of time
1. speed
2.distance
3. motion
4. velocity
Answers
Answer:
1. Speed
Explanation:
"how far an object moves in a certain amount of time"
"how far an object moves"- distance
"In a " - over
"certain amount of time" - time
Distance over time is speed.
The speed of an object is the distance the object travels in one unit of time.
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why is the ratio of neutrons to protons greater in the heavier elements? the greater the number of protons, the greater the electrostatic force of repulsion. the greater the number of neutrons, the weaker the proton-neutron strong nuclear force. the greater the number of protons, the weaker the proton-neutron strong nuclear force. the greater the number of neutrons, the greater the electrostatic force of repulsion. there is actually a lesser ratio of neutrons to protons in the heavier elements.
Answers
Because protons are charged particles, they repel one another.With each additional proton you add as you move to heavier elements, the repelling force grows stronger.Electrostatic repulsion and the overall strong nuclear force both rise.
When neutrons outnumber protons, what happens?Isotopes are atoms that have different proportions of protons and neutrons.Only protium and helium-3 remain stable when an atom has much more protons then neutrons for an extended period of time.
What transpires as the proton population grows?An rise in the number the protons within an atom will lead to a stronger attraction between the electrons whenever the energy remain the same.The enhanced proton count will result in a greater positive charge in the nucleus.
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Meadow voles are small mouse-like animals that eat plants and insects. Their niche in an ecosystem is a
A.
omnivore.
B.
herbivore.
C.
producer.
D.
scavenger.
Answers
Answer:
B. herbivore.
Explanation:
Meadow voles primarily consume plants, such as grasses, herbs, and bark, although they may also eat insects occasionally. As a result, their niche in an ecosystem is that of a herbivore, which is an organism that consumes primarily plants.
If x(t) and y(t) denote the system input and output, respectively, state whether the following systems are linear or nonlinear, causal or noncausal, time-variant or time-invariant, memoryless or with memory: a) y(t) = tx(t) b) y(t) = ax(t) +b, where a and b are constants. c) y(t) = ax² (t) +bx(t)+c, where a, b and c are constants. d) y(t) = x(T) dT
Answers
y(t) = tx(t) is a linear system, causal, time-variant, and with memory. Let's show that this system is linear using superposition. Suppose x1(t) and x2(t) are two input signals, and we apply them to the system to get y1(t) and y2(t), respectively.
Consider the input signal x(t) = a1x1(t) + a2x2(t),
where a1 and a2 are constants.
Then the output of the system is given by
y(t) = tx(t) = t(a1x1(t) + a2x2(t)) = a1
tx1(t) + a2
tx2(t) = a1y1
(t) + a2y2(t).
Therefore, this system is linear.b) y(t) = ax(t) + b,
where a and b are constants is a linear system, causal, time-invariant, and with memory.Let's show that this system is linear using superposition. Suppose
x1(t) and x2(t) are two input signals, and we apply them to the system to get y1(t) and y2(t), respectively. Consider the input signal
x(t) = a1x1(t) + a2x2(t),
where a1 and a2 are constants. Then the output of the system is given by
y(t) = ax(t) + b = a(a1x1(
t) + a2x2(t)) + b = a1ax1(t) + a2ax2(t) + b = a1y1(t) + a2y2(t).
Therefore, this system is linear.c)
y(t) = ax²(t) + bx(t) + c,
where a, b, and c are constants, is a nonlinear system, causal, time-invariant, and with memory. To see that it's nonlinear, consider two input signals, x1(t) and x2(t), and let y1(t) and y2(t) be the corresponding outputs. Let x(t) = a1x1(t) + a2x2(t), where a1 and a2 are constants.
Then the output of the system is given
byy(t) = ax²(t) + bx(t) + c = a(a1x1(t) + a2x2(t))² + b(a1x1(t) + a2x2(t)) + c ≠ a1y1(t) + a2y2(t).
Therefore, this system is .d) y(t) = x(T)dT is a linear system, time-invariant, and with memory. Let's show that this system is linear using superposition. Suppose x1(t) and x2(t) are two input signals, and we apply them to the system to get y1(t) and y2(t), respectively. Consider the input signal x(t) = a1x1(t) + a2x2(t), where a1 and a2 are constants. Then the output of the system is given by
y(t) = x(T)dT = (a1x1(T) + a2x2(T))dT = a1x1(T)dT + a2x2(T)
dT = a1y1(t) + a2y2(t).
Therefore, this system is linear.
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please help, i will mark brainliest.
Answers
The valid combinations are:
a) 5, 12, and 4b) 7, 7, and 7Total resistance for a circuit in series is R_T = R1 + R2 + R3 + ...
How to determine combinations and total resistance?Question 1
To determine the valid combinations of resistors for a circuit with a total resistance of 21, find combinations where the sum of the individual resistances equals 21. Analyze each option:
5, 12, and 4:
Total resistance = 5 + 12 + 4 = 21 (Valid combination)
7, 7, and 7:
Total resistance = 7 + 7 + 7 = 21 (Valid combination)
3, 3, and 3:
Total resistance = 3 + 3 + 3 = 9 (Invalid combination)
5, 5, and 5:
Total resistance = 5 + 5 + 5 = 15 (Invalid combination)
Therefore, the valid combinations are:
5, 12, and 4
7, 7, and 7
Question 2:
Regarding the second question, the equation that calculates the total resistance for a circuit in series is:
R_T = R1 + R2 + R3 + ...
So, the correct option is:
R_T = R1 + R2 + R3 + ...
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Desde la parte superior de una torre de 100 m de altura se lanza una piedra verticalmente con una rapidez inicial de 20 m/s
Answers
The two stones will meet at a height of approximately 83.1 meters above the ground.
y1 = 0.5 * g * t^2
At the same time, another stone is projected vertically upwards from the ground with a velocity of 20 m/s.
y2 = v0 * t + 0.5 * g * t^2
0.5 * g * t^2 = 100 - v0 * t - 0.5 * g * t^2
Simplifying and rearranging, we get:
t = (2 * v0) / g
Substituting the values of v0 and g, we get:
t = (2 * 20) / 9.81 ≈ 4.08 s
So the two stones will meet after 4.08 seconds.
To find the height at which they meet, we can substitute this value of t into either of the equations for y1 or y2. Let's use the equation for y1:
y1 = 0.5 * g * t^2 = 0.5 * 9.81 * (4.08)^2 ≈ 83.1 m
Velocity is a fundamental concept in physics that describes the rate at which an object's position changes with respect to time. It is a vector quantity that specifies both the magnitude and direction of motion.
Mathematically, velocity can be defined as the change in an object's position over a given time interval. The formula for velocity is v = Δx/Δt, where v is the velocity, Δx is the change in position, and Δt is the change in time. Velocity is different from speed, which only describes the magnitude of motion and not its direction. In other words, velocity takes into account the direction of motion while speed does not.
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Complete Question:
A stone is allowed to fall from the top of a tower 100m high and at the same time, another stone is projected vertically upwards from the ground with a velocity of 20m/s. Calculate when and where the two stones will meet.
Which of the following occurs LAST of the following steps of photosynthesis as you follow one electron through the light reactions?
a. NADP+ is reduced to NADPH by NADPH reductase.
b. A photon of light is absorbed by photosystem II.
c. energy is transferred to the b6-f complex to move protons from the stroma into the thylakoid space.
d. water is broken down into protons and oxygen.
e. A photon of light is absorbed by photosystem I.
Answers
NADP+ is reduced to NADPH by NADPH reductase occurs last in the following steps of photosynthesis when following one electron through the light reactions. The correct answer is A.
Photosynthesis is a process in which plants, algae, and some bacteria convert light energy into chemical energy in the form of organic compounds. This process occurs in two stages: the light reactions and the dark reactions.In the light reactions, light energy is absorbed by chlorophyll pigments and transferred to two photosystems: photosystem II (PSII) and photosystem I (PSI). These photosystems generate ATP and NADPH, which are used in the dark reactions to produce organic compounds.During the light reactions, water is also split by PSII to generate oxygen and protons. The electrons from this reaction are transferred through a series of electron carriers in the electron transport chain (ETC), including the b6-f complex. As the electrons are transported through the ETC, protons are pumped from the stroma into the thylakoid space, creating a proton gradient. This gradient is then used to generate ATP through ATP synthase.The final step of the light reactions involves the reduction of NADP+ to NADPH by NADPH reductase. This enzyme transfers the electrons from the ETC to NADP+ to produce NADPH, which is then used in the dark reactions to produce organic compounds.Therefore, the correct answer is a. NADP+ is reduced to NADPH by NADPH reductase.For more such question on NADPH
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a ball is dropped from a height of 13.3 m. how long will it take for the ball to hit the ground?
Answers
Answer:
i dont know the actual answer but i can tell you that it takes 4 seconds for a ball to hit the ground .
Explanation:
a uniform rope hangs from a ceiling. without tugging on the rope, you give the bottom of the rope a wiggle and a wave travels upward along the rope. what can you say about the speed of the wave as the wave travels up the rope?
Answers
When a uniform rope hangs from a ceiling and you give the bottom of the rope a wiggle, the speed of the wave as the wave travels up the rope will remain constant.
A wave is a transfer of energy in which energy travels through a medium without the medium itself traveling. When the medium is influenced, this energy transmission can either be a mechanical wave, such as sound waves, or an electromagnetic wave, such as radio waves or light waves.
The way that waves transmit energy determines the characteristics of the wave.
The speed of the wave as it travels up the rope will remain constant due to the transverse nature of the wave that travels along a rope.
When a wave travels along a rope, the particles in the rope move perpendicular to the wave's direction. This is because the wave travels along a transverse plane, which means that it oscillates up and down at right angles to its propagation direction.
As a result, the rope will experience both compression and rarefaction, which will cause the wave to travel along the length of the rope in a manner that will maintain the speed of the wave constant.
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what is the process of subduction
Answers
Answer:
Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Regions where this process occurs are known as subduction zones.
Find the resultant of two forces of 4.0N and 6.0N acting at an angle of 160° to each other.
Answers
\(\star\sf \overrightarrow{A}=4N\)
\(\star\sf\overrightarrow{B}=6N\)
Angle=160\(\boxed{\sf R=\sqrt{A^2+B^2+2ABcos\theta}}\)
\(\\ \sf\longmapsto R=\sqrt{4^2+6^2+2(4)(6)cos160}\)
\(\\ \sf\longmapsto R=\sqrt{16+36+48(-0.93)}\)
\(\\ \sf\longmapsto R=\sqrt{52-44.6}\)
\(\\ \sf\longmapsto R=\sqrt{7.4}\)
\(\\ \sf\longmapsto R=2.7N\)
a plane flew for 2 hours at 467 mph
Answers
Answer: Plane flew 3,614 miles
Explanation: = (2 × 467) + (5 × 536)=3, 614 miles.
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which of the following helps in designing an attractive 3-D craft?
A. texture and colour
B. balance and emphasis
C. Shapes and space
D. Size and form
Answers
Answer:
it A texture and colour I
Explanation:
I just did this
Answer:
Shapes and space
Explanation:
3D crafts use shapes and space.
The purpose of space: Distance, area, volume; physical space independent of what occupies it; absolute space.
The purpose of shapes: Positive and negative
Positive shape is the totality of the mass lying between its contours; in three-dimensional work, the visible shape or outer limit of a form changes as the viewer's position is changed. These outer limits are seen as shapes moving back and forth between major contours.
Negative space is empty space defined by a positive shape. Sometimes referred to as occupied and unoccupied space.
what is the magnitude of the acceleration of a skydiver who is currently falling at two-thirds his eventual terminal speed?
Answers
The magnitude of the acceleration of the skydiver is 5.45 m/s².
The highest possible speed that an object can achieve as it descends through a fluid is called the terminal velocity. It happens when the weight of the object is being pulled downward by gravity plus the combined forces of drag and buoyancy.
At any terminal velocity v the acceleration is equal to the acceleration due to gravity.
a = g
We know, g = 9.81 m/s²
The skydiver is currently falling at two-thirds of his eventual terminal speed.
So,
ma = mg - m( 2/3 )²g
a = g - ( 2/3 )²g
a = g( 1 - 4/9 )
a = g( 5/9 )
a = 9.81 × 5/9
a = 5.45 m/s²
The acceleration of the skydiver who is currently falling at two-thirds of his eventual terminal speed is 5.45 m/s²
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The mass of an object is 50 kg. If its weight is 600N on a certain planet. Calculate the
gravitational field strength of the planet.,
Answers
Answer: The answer is 700kg
Explanation:
The parallel plates in a capacitor, with a plate area of 8.00 cm2 and an air-filled separation of 2.70 mm, are charged by a 8.70 V battery. They are then disconnected from the battery and pulled apart (without discharge) to a separation of 6.80 mm. Neglecting fringing, find (a) the potential difference between the plates, (b) the initial stored energy, (c) the final stored energy, and (d) the work required to separate the plates.
Answers
Answer:
a) ΔV₁ = 21.9 V, b) U₀ = 99.2 10⁻¹² J, c) U_f = 249.9 10⁻¹² J, d) W = 150 10⁻¹² J
Explanation:
Let's find the capacitance of the capacitor
C = \(\epsilon_o \frac{A}{d}\)
C = 8.85 10⁻¹² (8.00 10⁻⁴) /2.70 10⁻³
C = 2.62 10⁻¹² F
for the initial data let's look for the accumulated charge on the plates
C = \(\frac{Q}{\Delta V}\)
Q₀ = C ΔV
Q₀ = 2.62 10⁻¹² 8.70
Q₀ = 22.8 10⁻¹² C
a) we look for the capacity for the new distance
C₁ = 8.85 10⁻¹² (8.00 10⁻⁴) /6⁴.80 10⁻³
C₁ = 1.04 10⁻¹² F
C₁ = Q₀ / ΔV₁
ΔV₁ = Q₀ / C₁
ΔV₁ = 22.8 10⁻¹² /1.04 10⁻¹²
ΔV₁ = 21.9 V
b) initial stored energy
U₀ = \(\frac{Q_o}{ 2C}\)
U₀ = (22.8 10⁻¹²)²/(2 2.62 10⁻¹²)
U₀ = 99.2 10⁻¹² J
c) final stored energy
U_f = (22.8 10⁻¹²) ² /(2 1.04 10⁻⁻¹²)
U_f = 249.9 10⁻¹² J
d) the work of separating the plates
as energy is conserved work must be equal to energy change
W = U_f - U₀
W = (249.2 - 99.2) 10⁻¹²
W = 150 10⁻¹² J
note that as the energy increases the work must be supplied to the system
consider what happens when you push both a pin and the blunt end of a pen against your skin with the same force. decide what determines whether your skin is cut - the net force applied to it or the pressure.
Answers
Answer:
it is cut, because of the pressure
a test rocket is fired straight up from rest with a net acceleration of 20 m/s2. after 4 seconds the motor turns off, but the rocket continues to coast upward with no appreciable air resistance. what maximum elevation does the rocket reach?
Answers
Therefore, the maximum elevation the rocket reaches is approximately 1322.9 meters.
define elevation ?
Elevation refers to the vertical distance or height of a location or object above a reference point, such as sea level or ground level. It is often used in geography, surveying, and navigation to describe the height or altitude of a place or feature relative to its surroundings.
The maximum elevation the rocket reaches can be found by first calculating its velocity at the instant the motor turns off and then using the kinematic equation for displacement:
vf = vi + at
where vf is the final velocity, vi is the initial velocity (which is 0 m/s since the rocket starts from rest), a is the acceleration (20 m/s^2), and t is the time interval during which the acceleration is applied (4 s).
vf = 0 + 20 m/s^2 * 4 s = 80 m/s
Now, we can use the kinematic equation for displacement:
Δy = viΔt + 1/2at^2
where Δy is the displacement (or change in elevation), vi is the initial velocity, a is the acceleration (which is now the acceleration due to gravity, -9.8 m/s^2), and t is the time interval during which the object moves (which is the time from when the motor turns off until the object reaches its maximum elevation).
We know that the initial velocity is 80 m/s and that the displacement we are looking for is the maximum elevation. We can solve for t by setting vf to 0 and solving for t:
0 = 80 m/s + (-9.8 m/s^2) * t
t = 8.16 s
Now we can use this value of t to find the maximum elevation:
Δy = viΔt + 1/2at^2
Δy = (80 m/s)(8.16 s) + 1/2(-9.8 m/s^2)(8.16 s)^2
Δy = 1322.9 m
Therefore, the maximum elevation the rocket reaches is approximately 1322.9 meters.
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A snowboarder is sliding back and forth on a half pipe at one point she leaves the top of the half pipe and slides to the other side choose when kinetic energy increases during the snowboarders ride
Answers
Answer:
he kinetic energy increases on the descent, being maximum at the lowest point of the trajectory.
Explanation:
In these semicircular sections the skaters slide from one side to the other, in the downward path their kinetic energy increases and their potential energy decreases; When it leaves the ramp and is in the air, the kinetic energy decreases rapidly, up to the point of maximum height where the kinetic energy is zero.
Consequently, the kinetic energy increases on the descent, being maximum at the lowest point of the trajectory.
Draw a wave below youf copy of wave g which has higher amplitude but the same frequency inside the box labeled as wave h how would this sound compare to the sound produced by wave g
Answers
Answer:
.. answer explamkn
Explanation:
The figure below shows a closed loop where 20 A current is flowing in this loop. A uniform magnetic field of 3.0 T in the -x axis direction. The loop is in a plane that is 30 degrees with the yz−plane. Find: a. The y-component of the magnetic force on the segment AB of the loop. N b. The torque magnitude that the magnetic field exerts on the loop. N.m
Answers
a. The y-component of the magnetic force on the segment AB of the loop is zero. b. The torque magnitude that the magnetic field exerts on the loop can be calculated using the formula τ = IAB × B × sin(θ), where I is the current, AB is the area of the loop, B is the magnetic field, and θ is the angle between the loop and the magnetic field.
a. The y-component of the magnetic force on the segment AB of the loop is zero because the magnetic field is directed in the -x axis direction, perpendicular to the y-axis. The magnetic force experienced by a current-carrying segment is given by the equation F = I × L × B × sin(θ), where I is the current, L is the length of the segment, B is the magnetic field, and θ is the angle between the segment and the magnetic field.
In this case, the segment AB is parallel to the magnetic field (θ = 90°), resulting in sin(90°) = 1, but the y-component of the force is zero because the force is in the x-direction.
b. The torque magnitude that the magnetic field exerts on the loop can be calculated using the formula τ = IAB × B × sin(θ), where I is the current, AB is the area of the loop, B is the magnetic field, and θ is the angle between the loop and the magnetic field.
The torque acts to rotate the loop around an axis perpendicular to the plane of the loop. To calculate the torque, we need to determine the area of the loop and the angle θ. Once these values are known, we can plug them into the formula to find the torque magnitude.
Learn more about magnetic force here:
https://brainly.com/question/10353944
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A mechanic uses a screw driver to install a 1⁄4-20 UNC bolt into a mechanical brace. What is the mechanical advantage of the system? What is the resistance force if the effort force is 5 lb
Answers
Answer:
15.7 ; 78.5
Explanation:
Given that
The mechanic use a screw driver to install 1⁄4-20 UNC bolt
And, the effort force is 5lb
We need to find out the mechanical advantage
And, the resistance force
As we know that
The Mechanical advantage of a screw = Circumference ÷ pitch
where,
Circumference = pi × d
pi = 3.142, D = diameter
So,
Circumference = 3.142 × (1 ÷ 4)
= 0.785 in
Now
Pitch = 1 ÷ TPI
Here TPI (thread per inch) = 20
Pitch = 1 ÷ 20 = 0.05
So,
Mechanical advantage = 0.785 ÷ 0.05
= 15.7
Now Resistance force if effort force is 5lb
We know that
Mechanical advantage = Fr ÷ Fe
Here
Fe = effort force, Fr = resistance force
15.7 = Fr ÷ 5
Fr = 15.7 × 5
= 78.5 lbs
A cat with a mass of 5.00 kg pushes on a 25.0 kg desk with a force of 50.0N to jump off. What is the force on the desk?
Answers
Answer:
i dont know
Explanation:
Sorry and good luck
Muốn biểu diễn vectơ lực chúng ta cần phải biết các yếu tố gì
Answers
Một đại lượng vectơ là một lực. Đại lượng vectơ là đại lượng có cả độ lớn và hướng, như chúng ta đã dạy trong phần trước. Bạn phải xác định cả độ lớn (kích thước hoặc số) và hướng của lực tác dụng lên một vật thể để mô tả hoàn toàn nó.
a horse is tied with a 2m long rope at a pole. what distance will the horse run around the pole with a rope tightly stretched, if it takes and one a half rounds? also find the displacement of the horse
Answers
Answer: Total distance = 4π meters and the Total Displacement = 0
Explanation: 1.5 rounds around the pole = 1.5 times the circumference of the circle form by the rope.
Circumference of a Circle = 2πr
from the question the radius = 2m, hence the total circumference = 2π*2 = 4π meters.
Displacement which is distance between initial position and final position. When the horse takes one and a half rounds around the pole, it ends up back at the starting point. Hence, the displacement is zero.