Answers
The gravitational potential energy stored between the skydiver and Earth decreased as she drifted toward the flat ground.
What is gravitational potential energy?Gravitational energy or gravitational potential energy is described as the potential energy a massive object has in relation to another massive object due to gravity.
Gravitational energy is used everyday life as described below:
A raised weight. A car that is parked at the top of a hill. A yoyo before it is released.Gravitational potential energy is calculated by the formula U = mgh.
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Related Questions
Which vector has an x-component with a length of 2?
c
b
d
a
Answers
The vector (2, y) has an x-component with a length of 2.
A vector with an x-component of length 2 can be represented as:
Vector V = (2, y)
In this representation, the x-component of the vector is 2, and the y-component can have any value since it was not specified.
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. A stone dropped from the top of 90m high building, what will its velocity when it reaches the ground?
Answers
Answer:
60m
Explanation:
Because it's just math
To be able to calculate the energy of a charged capacitorand to understand the concept of energy associated withan electric field.The energy of a charged capacitor is given byU= QV/2, where Q is the charge of the capacitor andV is the potential difference across the capacitor. Theenergy of a charged capacitor can be described as theenergy associated with the electric field created insidethe capacitor.In this problem, you will derive two more formulas for theenergy of a charged capacitor; you will then use aparallel-plate capacitor as a vehicle for obtaining theformula for the energy density associated with an electricfield. It will be useful to recall the definition ofcapacitance, C = Q/V, and the formula for thecapacitance of a parallel-plate capacitor,Co A/d, where A is the area of each of the platesand d is the plate separation. As usual, eo is thepermittivity of free space.
Answers
The energy of a charged capacitor can also be written as \(U = \frac {CV^2}{2}\) and \(U = \frac {Q^2d}{2\epsilon_o A}\).
To derive two more formulas for the energy of a charged capacitor, we start with the definition of capacitance:
C = Q/V
Solving for Q, we get:
Q = CV
Substituting this expression for Q into the original formula for the energy of a charged capacitor, \(U = QV/2\), we get:
\(U = (CV)V/2\)
\(U = CV^2/2\)
This is one of the additional formulas for the energy of a charged capacitor.
Next, we can use the formula for the capacitance of a parallel-plate capacitor to derive the energy density associated with an electric field. The capacitance of a parallel-plate capacitor is given by:
\(C = \epsilon _o A/d\)
where εo is the permittivity of free space, A is the area of each plate, and d is the distance between the plates. Solving this equation for the potential difference, V, we get:
\(V = Q/C\)
\(V = Q/(\epsilon_o A/d)\)
\(V = Qd/(\epsilon_o A)\)
Substituting this expression for V into the formula for the energy of a charged capacitor, \(U = QV/2\), we get:
\(U = \frac {Q^2d}{2\epsilon_o A}\)
This expression gives us the energy associated with the electric field in the capacitor.
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If the ball is released from rest at a height of 0.72 m above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track
Answers
The angular speed of the ball when it is on the frictionless side of the track is given by the equation
ω = √(10gh / 7r²)
Now let's look at the answer.
The law of conservation of energy relates the ball's initial gravitational potential energy to its final kinetic energy when it reaches the friction-less side of the track. If the ball is rolling without slipping, then its total kinetic energy is equal to the sum of its translational and rotational kinetic energy.
Equation for conservation of energy on the no-slip side of the track:
mgΔh = ½mv² + ½Iω²
The ball's initial potential energy is equal to mgh and its final kinetic energy is equal to ½mv² + ½Iω² where I is the ball's moment of inertia.
The moment of inertia of a solid sphere about its center of mass is given by I = (2/5)mr² where m is the mass of the sphere and r is the radius of the sphere.
At the no-slip side, the ball's initial potential energy is mgh, and at the friction-less side, the ball's kinetic energy is
½mv² + ½(2/5)mr²ω².
Therefore, we can write:
mgh = ½mv² + ½(2/5)mr²ω²
Rearranging the above equation and solving for ω, we obtain the following expression:
ω = √(10gh / 7r²)
Therefore, the angular speed of the ball when it is on the frictionless side of the track is given by the equation
ω = √(10gh / 7r²).
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the density of lead is 11.3g/cm^3. what is the value in kilograms per cubic meter
Answers
Answer:
below
Explanation:
11.3 gm / cm^3 * 1 kg / 1000gm * (100 x 100 x100cm^3 /m^3)
=11300 kg/m^3
A train running at 30 m/s is slowed uniformly to a stop in 44 seconds. Find (a) the acceleration and (b) the stopping distance.
Answers
A. The acceleration of the train is –0.68 m/s²
B. The stopping distance is 660 m
What is acceleration?This is defined as the rate of change of velocity which time. It is expressed as
a = (v – u) / t
Where
a is the acceleration v is the final velocity u is the initial velocity t is the time A. How to determine the acceleration Initial velocity (u) = 30 m/sFinal velocity (v) = 0 m/sTime (t) = 44 sAcceleration (a) =?a = (v – u) / t
a = (0 – 30) / 44
a = –0.68 m/s²
B. How to determine the distanceInitial velocity (u) = 30 m/sFinal velocity (v) = 0 m/sTime (t) = 44 sDistance (s) =?s = (v + u)t / 2
s = [(0 + 30) × 44]/ 2
s = (30 × 44) / 2
s = 1320 / 2
s = 660 m
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the body of mass 17 kg is attached to a string of length of 3.4 m is whirled round in vertical circle .if the tension in the string at the lowest point is 300N .calculate the speed of the body
Answers
Answer:
Speed of the body = 5.1652 m/s
Explanation:
Given:
Mass M = 17 kg
Length of string = 3.4 m
Tension in the string = 300N
Find:
Speed of the body
Computation:
T - mg = mv² / R... [R = L]
So,
T - mg = mv² / L
300 - 17[9.8] = [17][v]² / [3.4]
133.4 = [17][v]² / [3.4]
v² = 26.68
Speed of the body = 5.1652 m/s
Which equation best represents the intensity of light coming out of a secondpolarizing filter is equal to the intensity of polarized light coming out of a firstpolarizing filter multiplied by the cosine, squared, of the angle between thepolarizing axes of the two filters?
Answers
Let the angle between the polarizing axes of the two filters be
\(\theta\)Let the intensity of polarized light coming out of the first polarizing filter be I1.
Then the intensity of the second polarizing filter will be
\(I_2=I_1cos^2\theta\)Thus, the correct option is B.
Help me yall it due in a few minutes :((()
Answers
Answer:
B. blocks 2 & 3.
Explanation:
Block 1 has equal & opposite forces acting on it.
Block 2 has 5N on one side, 3N on the other. It will move in the direction the 5N of force is pushing.
Block 3 has no opposing force.
How does increasing the amount of charge on an object affect the electric force it exerts on another charged object?
The electric force increases because the amount of charge has an indirect relationship to the force.
The electric force increases because the amount of charge has a direct relationship to the force.
The electric force decreases because the amount of charge has an indirect relationship to the force.
The electric force decreases because the amount of charge has a direct relationship to the force.
Answers
Answer:
a
Explanation:
Answer:
A
Explanation:
What is often the first indicator that a region has a problem with toxic waste?
Answers
Children then older people getting sick. Organic farming is a method of growing food crops with natural alternatives to chemical pesticides.
A 665-N Marine in basic training climbs a 11.5-m vertical rope at a constant speed in 9.50 s. What is his power output
Answers
The power output of the Marine can be calculated by dividing the work done in climbing the rope by the time taken. The power output of the Marine is approximately 805.53 watts.
Power is defined as the rate at which work is done or energy is transferred. In this case, the work done by the Marine in climbing the rope can be calculated by multiplying the force applied (weight of the Marine) by the distance covered (height of the rope). The equation for work is given by W = Fd, where W is the work, F is the force, and d is the distance.
The weight of the Marine is given as 665 N, and the height of the rope is 11.5 m. Therefore, the work done is W = 665 N × 11.5 m = 7647.5 J (joules).
To calculate the power output, we divide the work done by the time taken. The equation for power is P = W/t, where P is the power, W is the work, and t is the time.
The time taken to climb the rope is given as 9.50 s. Therefore, the power output of the Marine is P = 7647.5 J / 9.50 s ≈ 805.53 watts (W).
Hence, the power output of the Marine is approximately 805.53 watts.
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Order the electromagnetic waves from lowest frequency (1) to highest (4). gamma: infrared: x-ray: visible light:
Answers
Gamma: 4
Infrared: 1
X-Ray: 3
Visible Light: 2
Infrared has the longest wavelength between the four options, meaning that it has the lowest frequency. Since the longer the frequency, the lower the frequency. While the shorter the wavelength, the higher the frequency.
The portions of the electromagnetic spectrum are called from greatest to lowest energy: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves. Microwaves (such as those used in microwave ovens) are a subset of the electromagnetic spectrum's radio wave segment.
Next would be visible light since it has the second longest wavelength out of the given options. Then it would be X-Ray. And finally Gamma since it has the shortest wavelength.
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significant nomadic peoples who spoke a language derived from a single parent tongue were the
Answers
The Answer would be Indo - Europeans
. which element is present in the fluorescent light? explain in detail how you can use your data to decide which gas is present 7. which of the gases that you tested are present in air?
Answers
The element present in the fluorescent light is mercury. To determine which gas is present, you can conduct a gas test.
The element present in a fluorescent light is mercury. When electricity is passed through the mercury vapor, it produces ultraviolet light that causes the phosphor coating inside the bulb to glow, creating visible light.
To determine which gas is present, you can analyze the emission spectrum of the light and compare it to known spectra of various gases. As for the gases present in air, they mainly include nitrogen (78%), oxygen (21%), and trace amounts of other gases like argon, carbon dioxide, and neon.
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Where are most volcanoes found?
Answers
Answer:
Pacific Ocean
Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”
Explanation:
where are most volcanoes located in the Pacific ocean
what is the relationship between frequency and pitch?
Answers
Newer aircraft jet catapult systems use magnets instead of steam. The launch still takes 1.19 seconds, but the acceleration is a about 47.41 m/s2. Determine the length of the runway on the carrier, assume the aircraft starts from REST
Answers
Answer:
33.6 m
Explanation:
Given:
v₀ = 0 m/s
a = 47.41 m/s²
t = 1.19 s
Find: Δx
Δx = v₀ t + ½ at²
Δx = (0 m/s) (1.19 s) + ½ (47.41 m/s²) (1.19 s)²
Δx = 33.6 m
which gives the amount of charge on a certain length of a rod that is uniformly charged?
Answers
To find the amount of charge on a certain length of a rod that is uniformly charged, use the following formula in option C. It is the product of the length and the linear charge density.
This is known as the total charge on the rod and can be calculated using the formula Q = λL, where Q is the total charge, λ is the linear charge density, and L is the length of the rod. This formula will give you the total amount of charge on that specific length of the uniformly charged rod.
The reason why this ratio is important is that it determines the amount of charge that is present on a certain length of the rod. This is known as Coulomb's Law and the study of electrostatics, which states that the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
Therefore, the amount of charge present on a certain length of the rod affects the force that it will exert on other charged objects.
Option C is the correct one.
Complete Question
which gives the amount of charge on a certain length of a rod that is uniformly charged?
A. It is the ratio of the length to the linear charge density
B. It is the ratio of the linear charge density to the length
C. It is the product of the length and the linear charge density
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A car speeds up from 14 meters per second to 21 meters per second in 6 seconds. Whats the acceleration and the distance passed within that time?
Answers
Answer:
a = 1.666... m/s²
Explanation:
a = v2 - v1 / t2 - t1
a = 21m/s - 14m/s / 6s - 0s
a = 7m/s / 6s
a = 1.666... m/s²
Nikola Tesla and Thomas Edison were both pioneers when it came providing electricity to the people. Edison had hired the genius Tesla to work for him, but their differences, pride and personalities caused them to compete and publicly insult one another instead of working together. List 5 strategies these two could have used to help them work with others they disagree with.
Answers
Explanation:
In other to avoid a situation where their differences, pride, and personalities caused them to compete and publicly insult one another instead of working together they need to respectfully consider the viewpoints of each other, as well as assign individual roles that should be respected.
A specially constructed sandwich of silicon and other
materials that converts light energy to electric is
Answers
Solar cell
Tell me if you need an explanation!
2. Why do you think a light stick would be a good
light source around flammable materials?
Answers
Answer:
the wood for the stick is less dense so it would be easy to light on fire and maintain a fire on it, unlike a wood log witch will take a larger activation energy to have a fire last on it for a period of time.
Which property of potential energy distinguishes it from kinetic energy? Question 2 options: Work and power Force Mass Position.
Answers
The position of the object is the property that distinguishes the potential energy from kinetic energy.
What is potential energy?
The potential energy of a body or system is due to the position of the different components.
\(U = mgh\)
Where,
\(m\) - mass
\(g\) - graviatational acceleration
\(h\) - height
The kinetic energy of a body is due to its motion. It can be given as,
\(KE = \dfrac 12 mv^2\)
Where,
\(v\)- velocity
Since both potential energy and kinetic energy depend upon the mass, power, can perform work.
Therefore, the position of the object is the property that distinguishes the potential energy from kinetic energy.
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what is the difference between a transverse wave and a compression wave
Answers
The main difference between transverse waves and compression waves is the direction of the particle oscillation relative to the direction of wave propagation. The other differences are as follows:
Transverse waves are waves in which the particles of the medium oscillate perpendicular to the direction of wave propagation. These waves exhibit a characteristic up-and-down motion, like the motion of a rope when it is shaken up and down. Examples of transverse waves include light waves, water waves, and seismic S-waves. On the other hand, compression waves, also known as longitudinal waves, are waves in which the particles of the medium oscillate parallel to the direction of wave propagation. These waves exhibit a characteristic back-and-forth motion, like the motion of a slinky when it is compressed and expanded. Examples of compression waves include sound waves and seismic P-waves. In transverse waves, the particle oscillation is perpendicular to the direction of wave propagation, whereas in compression waves, the particle oscillation is parallel to the direction of wave propagation.
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Total distance does not take into account the direction of the object, but displacement always includes direction.
Question 1 options:
True
False
Answers
Answer: True
Explanation:
Distance is a scalar, which means it has no direction. It is the sum of the entire path traveled.
Displacement is a vector, which means it does have direction. It is the shortest path from the start to the end. It is defined as \(x_f-x_i\).
Deven is describing aerobic exercise to his friend. What is the MOST
accurate statement he can make in his description?
O Aerobic exercise is generally short and intense.
O Aerobic exercise requires very little oxygen.
Aerobic exercise burns fewer calories than anaerobic exercise.
O Aerobic exercise can last continuously for many minutes.
Answers
According to the research, the correct option is Aerobic exercise can last continuously for many minutes. It is the statement that correctly he can use to make in his description about aerobic exercise.
What is aerobic exercise?They are those physical activities that aim to burn fat using a high amount of oxygen.
In this sense, these exercises allow to improve the resistance of the person, they are not very intense but are developed in long periods, unlike anaerobic exercises that are more intense and brief.
Therefore, we can conclude that according to the research, the correct option is Aerobic exercise can last continuously for many minutes. It is the statement that correctly he can use to make in his description about aerobic exercise.
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Answer: Aerobic exercise can last continuously for many minutes.
Explanation:
Got it correct
What is the translational kinetic energy, in MeV, of a proton moving at 0.54 of the speed of light ?
Answers
We would apply the relativistic kinetic energy formula which is expressed as
KE = (y - 1)mc^2 = [1/√(1 - v^2/c^2 - 1]mc^2
where
m is the mass of proton
c is the speed of light
v is the speed of the proton
From the information given,
m = 1.67 x 10^-27 kg
c = 3 x 10^8 m/s
v = 0.54c
Thus,
KE = 1.67 x 10^-27 x (3 x 10^8)^2[1/√(1 - (0.54c/c)^2 - 1]
KE = 28.27 x 10^-12 J
We would convert from joules to mev
1 J = 6,241,509,343,260 MeV
28.27 x 10^-12 = 28.27 x 10^-12 x 6,241,509,343,260
KE = 176.48 Mev
the translational kinetic energy is 176.48 Mev
in a meter of 3 how many beats are in a measure also this is for music
Answers
Answer:
3 i think
Explanation:
hope this helps also Hiiii
Suppose, in a physics lab experiment, you try to move a box of 5 kg by tying a rope around it across a flat table and pulling the rope at an angle of 30 degree above the horizontal as shown in the figure;
i. If the box is moving at constant speed of 2m/s and the coefficient of friction is 0.40, What is the magnitude of F?
ii If the box is speeding up with constant acceleration of 0.5 m/s2 ,What will be the magnitude of F?
Answers
i. The magnitude of F, given that the box is moving at constant speed of 2 m/s is 24.5 N
ii. The magnitude of F, given that the box is moving at constant acceleration of 0.5 m/s² is 2.5 N
i. How do i determine the magnitude of F?We can obtain the magnitude of F when the box is moving at constant speed of 2 m/s can be obtain as follow:
Mass of box (m) = 5 KgAngle (θ) = 30 degreesAcceleration due to gravity (g) = 9.8 m/s² Magnitude of F =?F = mgSineθ
F = 5 × 9.8 × Sine 30
F = 5 × 9.8 × 0.5
Magnitude of F = 24.5 N
ii. How do i determine the magnitude of F?We can obtain the magnitude of F when the box is moving at constant acceleration of 0.5 m/s² can be obtain as follow:
Mass of box (m) = 5 KgAcceleration (a) = 0.5 m/s² Magnitude of F =?F = ma
F = 5 × 0.5
Magnitude of F = 2.5 N
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