The amplitude of the voltage across the inductor at resonance is 2260.2 V.
1) The resonant angular frequency can be found using the formula:
ω0 =\(\frac{1}{\sqrt{(LC)}}\)
where L is the inductance (14 mH) and C is the capacitance (63 nF). Converting the units to SI, we have:
\(L = 14. 10^-^3 H\\C = 63. 10^-^9 F\)
Plugging in the values, we get:
ω0 \(= \frac{1}{\sqrt{(14 . 10^-^3. 63 . 10^-^9)}} \\= \frac{1}{\sqrt{(882 . 10^-^1^5)}} \\= \frac{1}{ 2,97 . 10^-^8}\\= 33,7 . 10^6 rad/s\)
So the resonant angular frequency is \(33,7 . 10^6 rad/s.\)
2) The amplitude of the current at the resonant frequency can be found using the formula:
\(I0 = V0/Z\)
where V0 is the maximum potential (57 V), and Z is the impedance of the circuit at resonance. At resonance, the reactance of the inductor and the capacitor cancel each other out, leaving only the resistance. So:
Z = R
Plugging in the values, we get:
I0 \(= 57/12\\= 4.75 A\)
So the amplitude of the current at the resonant frequency is 4.75 A.
3) The quality factor of the circuit can be found using the formula:
Q = ω0L/R
Plugging in the values, we get:
Q \(= \frac{(33,7 .10^6 . 14 . 10^-^3)}{12}\\= 39,6\)
So the quality factor of the circuit is 39.6.
4) The amplitude of the voltage across the inductor at resonance can be found using the formula:
VL = QV0
Plugging in the values, we get:
VL \(= 39.6 × 57\\= 2260.2 V\)
So the amplitude of the voltage across the inductor at resonance is 2260.2 V.
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if you heat a rock until it glows, its spectrum will be:
If you heat a rock until it glows, its spectrum will display a continuous spectrum with no visible lines or bands. This is because the high temperature causes the atoms in the rock to vibrate rapidly and emit electromagnetic radiation in all directions, resulting in a broad range of wavelengths being emitted.
In contrast to a continuous spectrum, which shows a range of colors blending together smoothly, a line spectrum displays distinct lines or bands at specific wavelengths. This occurs when atoms emit or absorb light at specific wavelengths due to changes in their energy levels.
Therefore, if the rock were to cool down and emit light at a lower temperature, it may display a line spectrum depending on the chemical composition of the rock and the specific elements present. However, when heated to the point of glowing, the rock's spectrum will be a continuous one.
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Jordan tells a coworker, “I appreciate you filling in for me while I was sick and processing all those expense reports. You improved tremendously between the first report you processed and the last one. I can see your skills developing!” What is Jordan offering her coworker?
A.
encouragement
B.
empathy
C.
external training
D.
benefits
Answer:
Explanation:
A. Encouragement
Un reloj de péndulo de largo L y período T, aumenta su largo en ΔL (ΔL << L). Demuestre que su período aumenta en: ΔT = π ΔL /√(L g)
Answer:
ΔT = \(\pi \ \frac{\Delta L}{\sqrt{Lg} }\)
Explanation:
In a simple harmonic motion, specifically in the simple pendulum, the angular velocity
w = \(\sqrt{\frac{g}{L} }\)
angular velocity and period are related
w = 2π / T
we substitute
2π / T = \sqrt{\frac{g}{L} }
T = \(2\pi \ \sqrt{\frac{L}{g} }\)
In this exercise indicate that for a long Lo the period is To, then and increase the long
L = L₀ + ΔL
we substitute
T = \(2\pi \ \sqrt{\frac{L + \Delta L}{g} }\)
T = \(2\pi \ \sqrt{\frac{L}{g} } \ \sqrt{1+ \frac{\Delta L}{L} }\)
in general the length increments are small ΔL/L «1, let's use a series expansion
\(\sqrt{1+ \ \frac{\Delta L}{L} } = 1 + \frac{1}{2} \frac{\Delta L}{L} + ...\)
we keep the linear term, let's substitute
T = \(2\pi \ \sqrt{\frac{L}{g} } \ ( 1 + \frac{1}{2} \frac{\Delta L}{L} )\)
if we do
T = T₀ + ΔT
T₀ + ΔT = \(2\pi \sqrt{\frac{\Delta L}{g} } + \pi \ \sqrt{\frac{L}{g} } \ \frac{\Delta L}{L}\)
T₀ + ΔT = T₀ + \(\pi \sqrt{\frac{1}{Lg} } \ \Delta L\)
ΔT = \(\pi \ \frac{\Delta L}{\sqrt{Lg} }\)
The potential energy of a body 5m above the ground is 200j. Calculate the mass of the body if g=10m/s.
Answer:
the mass of the body is 4 kg
Explanation:
PE = mass • height • gravity
200J = mass • 5m • 10m/s/s
divide both sides by 50
4kg = mass
The mass of the body is 4 kg
Formula: PE = mass*height*gravity
200J = mass*5m*10m/s/s
divide both sides by 50
∴ mass = 4kg
What are capability power and examples?
Capacity energy is saved energy that relies upon the relative position of diverse elements of a machine. Spring has more capacity strength while it's miles compressed or stretched. A steel ball has extra capability strength raised above the floor than it has after falling to Earth.
What are the four varieties of potential strength?Elastic capability energy.Electrical (Electromagnetic) ability power.Gravitational capability strength.Nuclear potential electricity.Learn more about potential energy here: https://brainly.com/question/14427111
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True or false
John Watson worked with patients on analyzing their dreams
Answer:
true
Explanation:
Answer:its true i think im sorry if you get wrong
Explanation:
A small object is placed in front of a concave mirror gives real image and image is 4 times the object. When the object is moved towards the mirror, a virtual image of same magnification is formed. Find the focal length of the mirror.
The focal length of the mirror, when the object is moved towards it and a virtual image is formed is calculated to be -4u/3.
We know that,
magnification, m = height of image, v
height of the object, u
given in the question, m = 4
as the mirror is concave, thus:
v= -4u
Now, by using the mirror formula:
1/(-f) = 1/ v + 1/u
(as the image formed is virtual, the focal length of the mirror will be negative)
1/(-f) = 1/(-4u) + 1/u
-1/f = 3/4u
f= -4u/3
Concave mirrors create both physical and virtual images. When the concave mirror is put very close to the object, a virtual and enlarged image is generated; as the distance between the item and the mirror increases, the size of the image decreases, and genuine images are formed. These real-world photographs can be displayed on a screen. The concave mirror's focal point and center of curvature are located in front of the mirror.
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5) Why mercury is used as thermometeic liquid
Answer: becuase----Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. ... It also has a high boiling point which makes it very suitable to measure higher temperatures. Also, it has a shiny appearance and doesn't stick to the glass surface of glass.
Explanation: hope i helped c:
6. If an object's velocity increases from 13.2 m/s to 15.1 m/s in 8.00 seconds, what
is the acceleration of the object?
A. 1.89 m/s²
B. -0.250 m/s²
C. -1.65 m/s²
D. 0.238 m/s²
Answer:
Acceleration 0.238 m/s²
Explanation:
Given:
V₀ = 13.2 m/s
V = 15.1 m/s
t = 8.00 s
__________
a - ?
Is the acceleration of the object:
a = (V - V₀) / t
a = (15.1 - 13.2) / 8.00 ≈ 0.238 m/s²
Acceleration of the object is 0.238 m/s²
What is acceleration?Acceleration of an object is rate of change of velocity with respect to time. Due to having both direction and magnitude, it is a vector quantity of SI unit meter/second².
Given parameters:
Initial velocity; V₀ = 13.2 m/s
Final velocity; V = 15.1 m/s
time; t = 8.00 s
acceleration of the object; a = ?
We know, for accelerated object;
acceleration; a = (V - V₀) / t
⇒a = (15.1 - 13.2) / 8.00 ≈ 0.238 m/s²
Hence, acceleration of the object is 0.238 m/s².
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calculate the kinetic energy of a ball of mass 50g travelling of 30m/s how much work will need to be done to stop the ball
kinetic energy of the ball of mass 50 g and velocity of 300m/s is 22.5 J. The work done need to stop the ball is equivalent to its kinetic energy. Thus, 22.5 J of work done is needed.
What is kinetic energy?The kinetic energy of an object is the energy generated by virtue of its motion. It is related to its mass and velocity by the expression written below:
Ke = 1/2 m v²
Thus, kinetic energy increases with mas and velocity.
Given that, mass of the ball = 50 g = 0.05 kg
velocity of the ball = 30 m/s
then Ke = 1/2 × 0.05 kg × 30 m/s × 30 m/s = 22.5 J.
The energy of the body when it is moving is in the form of kinetic energy. This energy of the body is equivalent to the work done on the body to stope it. Therefore, work done on the ball needed to stop it is 22.5 J.
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A Parachutist with a camera, with descending at a speed of 12.5m/s, releases, the camera at an altitude of 64.3m. What is the magnitude of the velocity of the camera just before it hits the ground ? The acceleration of gravity is 9.8 m/s and air friction is negligible. How long does it take the camera to reach the ground
Given :
Initial velocity, u = 12.5 m/s.
Height of camera, h = 64.3 m.
Acceleration due to gravity, g = 9.8 m/s².
To Find :
How long does it take the camera to reach the ground.
Solution :
By equation of motion :
\(h = ut+\dfrac{gt^2}{2}\)
Putting all given values, we get :
\(12.5t+\dfrac{9.8t^2}{2}=64.3\\\\4.9t^2+12.5t=64.3\)
t = 2.56 and t = −5.116.
Since, time cannot be negative.
t = 2.56 s.
Therefore, time taken is 2.56 s.
Hence, this is the required solution.
I need help on this question
The movement of the plates may lead to or cause an earthquake.
What are the plate movements at convergent, divergent and transform boundaries?At convergent boundaries, two tectonic plates are moving towards each other. There are three types of convergent boundaries, characterized by the type of plates involved: Oceanic-Oceanic Convergence, Oceanic-Continental Convergence, Continental-Continental Convergence.
At divergent boundaries, two tectonic plates are moving away from each other. This type of boundary is often associated with seafloor spreading, where new crust is formed as magma rises to the surface and solidifies. Divergent boundaries on land can result in the formation of rift valleys and volcanoes.
At transform boundaries, two tectonic plates are sliding past each other. These boundaries are characterized by lateral movement and can result in earthquakes
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is the coefficient of static friction always constant between the same two surfaces? explain how you know.
Due to the fact that it is more difficult to initiate motion than to maintain it, the coefficient of kinetic friction is almost always lower than the coefficient of static friction.
What is static friction ?The form of friction between static or motionless surfaces is known as static friction. On the other hand, kinetic friction is the resistance between two surfaces while at least one of them is moving.
Due to the fact that there are more forces operating to maintain an object stationary on a given surface than there are forces resisting an object in motion, the coefficient of static friction is always greater than or equal to the coefficient of kinetic friction.
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A ball was kicked from ground with an initial velocity 4 m/s. at an angle
of 30° above the horizon.
a) At what time does the ball fall back and hits the ground?
b) What is the horizontal range of the projectile?
The ball will hit the ground after 0.408 sec and the horizontal range of the projectile is 1.414 m.
What is Projectile Motion?When a particle throws obliquely near the surface, it follows along a curved path under constant acceleration directed towards the center of the earth. The path followed by the particle and the motion is called projectile motion.
Consider the 'u' is the initial velocity of the particle and θ is the angle with the horizon,
The time of the flight = (2u sinθ)/g
The horizontal range (R) = (u² sin2θ)/g
Given, the initial velocity of the projectile, u 4 m/3
The angle above the horizon, θ = 30°
The time the ball falls back and hits the ground (t):
t = (2u sinθ)/g = (2 × 4 sin30)/9.8 = 0.408 s
The horizontal range (R) of the projectile = (u² sin2θ)/g
R = (4² sin60)/9.8
R = 1.413 m
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Which action contributes to mid-ocean ridge formation?
Which action contributes to mid-ocean ridge formation?
The tectonic plates continue to move toward each other over time.
The tectonic plates move parallel to each other.
Compression stress forces the rocks to rise up.
Magma rises up and forms a crust.
The action that contributes to mid-ocean ridge formation is when the tectonic plates move parallel to each other.
The correct option is B.
What are tectonic plates?Tectonic plates are described as composing of the oceanic lithosphere and the thicker continental lithosphere, each topped by its own kind of crust.
The mid-ocean ridge forms due to volcanic activity located along the Earth's tectonic plates causing two tectonic plates to move or pull apart from each other creating a zone which is referred to as divergent plate boundaries.
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A bird, travelling at 50 m/s wants to hit a man 100m below with a dropping. How far
in distance before flying directly over the man should the bird release it?
A student walks 3 km in 30 minutes. What is the student's average speed in km/h?
Answer:
6km/hr
Explanation:
3km = 30mins
x(km) = 1hr
1hr = 60 x 60 = 3600secs
30min = 30 x 60 = 1800secs
3 x 3,600/x X 1,800
x = 10,800/1,800
x = 6km/hr
To solve the problem we must know about speed, distance, and time.
What is the relationship between Speed, distance, and Time?
We know that speed, distance, and time all are in a relationship with each other. this relationship can be given as,
\(\rm{Speed = \dfrac{Distance}{Time}\)
Given to us
A student walks 3 km in 30 minutes.
We know distance can be written as the product of speed and time, therefore,
\(\rm Distance = \rm speed \times \rm Time\)
Substituting the values we get,
\(\rm 3\ km = Speed \times 0.5\ hour\)
\(\rm speed = \dfrac{3\ km}{0.5\ hour}\)
speed = 15 km\h
Hence, the speed of the student is 15 km\hour.
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Two 3.0g bullets are fired with speeds of 40.0 m/s
and 80.0 m/s, respectively. What are their kinetic
energies? Which bullet has more kinetic energy? What is the ratio of their kinetic energies?
\( = \sf \frac{1}{2} m {v}^{2} \)
Kinetic energy of the 1st bullet \( \sf = \frac{1}{2} \times m1 \times {(v1)}^{2} \\ \sf= \frac{1}{2} \times 0.003 \times {(40)}^{2}J \\ \sf = \frac{1}{2} \times 0.003 \times 1600J \\ \sf = 2.4J\)Kinetic energy of the 2nd bullet \( \sf = \frac{1}{2} \times m2 \times {(v2)}^{2} \\ \sf= \frac{1}{2} \times 0.003 \times {(80)}^{2}J \\ \sf = \frac{1}{2} \times 0.003 \times 6400J \\ \sf = 9.6J\) So, the 2nd bullet which has greater velocity has more kinetic energy.Therefore, the ratio of their kinetic energies\( \sf = \frac{2.4J}{9.6J} \\ \sf= \frac{24}{96} = \frac{1}{4} \\ \sf = 1 : 4\)
Answer:
The kinetic energies of the bullets are 2.4 J and 9.6 J.
The bullet having greater velocity has more kinetic energy.
The ratio of their kinetic energies is 1 : 4.
Hope you could get an idea from here
Doubt clarification - use comment section.
The kinetic energy of the two bullets are 2.4 J and 9.6 J respectively.
The ratio of the kinetic energy of the bullets is 1:4.
What is kinetic energy?The kinetic energy of an object is the energy possessed by the object due to its motion.
The kinetic energy of the two bullets is calculated as follows;
\(K.E_1 = \frac{1}{2} \times 0.003 \times 40^2 = 2.4 \ J\\\\K.E_2 = \frac{1}{2} \times 0.003 \times 80^2 = 9.6 \ J\)
Ratio of the kinetic energy of the bullets is calculated as follows;
\(K.E_1 : K.E_2 = 2.4: 9.6 \ = \ 1: 4\)
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the helium flash occurs at what stage in stellar evolution
The helium flash occurs during the red giant phase in the stellar evolution of low- and intermediate-mass stars.
To understand the helium flash, we must first examine the stages of stellar evolution leading up to it. Initially, a star forms from a cloud of gas and dust, primarily composed of hydrogen. As the cloud contracts under gravity, its core heats up, and eventually nuclear fusion starts, converting hydrogen into helium. This process, called the main sequence stage, generates energy and allows the star to shine.
Over time, the hydrogen in the core depletes, and fusion moves to a shell around the core. The core, now primarily composed of helium, continues to contract and heat up, while the outer layers of the star expand due to the increased energy generated by the hydrogen shell fusion. This expansion causes the star to enter the red giant phase.
As the helium core contracts, its temperature rises until it reaches a critical point, typically around 100 million Kelvin, where helium nuclei can overcome their electrostatic repulsion and undergo nuclear fusion. This fusion converts helium into carbon and oxygen, producing a rapid burst of energy called the helium flash. The energy release is so sudden that it causes the star to experience a rapid increase in brightness, even though the event occurs deep within the core and is not directly observable.
In summary, the helium flash occurs during the red giant phase of low- and intermediate-mass stars, when the core temperature reaches a critical point, allowing helium nuclei to undergo nuclear fusion and produce a sudden burst of energy.
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If your doorbell is malfunctioning, it will only strike the bell one time when the doorbell
is pressed. How does the electromagnet play a role in the correct (or incorrect) function of your
doorbell?
What is common between transverse waves and longitudinal waves?
Both include an amplitude, crest, and rarefactions
Both move faster at higher temperatures
Both move slower through densely packed molecules
Both include a wavelength from compression to compression
Answer:
b
Explanation:
i took the quiz
Both the transverse and longitudinal waves move faster at higher temperatures.
What is meant by transverse wave?A wave in which the motion of the particles is perpendicular to the direction of the wave propagation is referred to as a transverse wave.
Here,
As a result of the shear stress that is produced, transverse waves are frequently observed in elastic materials.
In this situation, the oscillations are caused by the displacement of the solid particles from their relaxed state in directions perpendicular to the wave's propagation.
The wave in which the particles of the medium oscillate parallel to the direction of propagation of the wave is called a longitudinal wave.
Sound waves similarly oscillate parallel to the direction of propagation, forming the compressions and rarefactions. Hence sound waves are called longitudinal waves.
Hence,
Both the transverse and longitudinal waves move faster at higher temperatures.
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suppose you observe a g2 star like the sun but with a luminosity more than 10,000 times higher than the sun. what type of star is this?
A G star with a brightness of 100 L Sun is classified as Figure 19.15 lum inosity Classes. Its surface area must be 100 times greater since it emits 100 times more energy while maintaining the same temperature.
Which kinds of stars are highly luminescent?Even more bright than the massive stars are the stars of group C. These are the largest stars, or supergiants, with the highest luminosities. If a red supergiant like Betelgeuse took the place of the Sun in our solar system, it would be larger than Jupiter's orbit.
What size star is an O type?A main-sequence (core hydrogen-burning) star with the spectral type O and luminosity class V is referred to as an O-type main-sequence star (O V). The mass of these stars ranges from 15 to 90 times that of the Sun, and their surface temperatures range from 30,000 to 50,000 K. They have a brightness that ranges from 40,000 to 1,000,000 times that of the Sun.
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Given an allowable stress of 1700 psi for timber, what is the maximum span of a simply supported beam using this section, and carrying a uniform load of 300 lbs/ft?
The maximum span of the simply supported beam, using the given timber section with an allowable stress of 1700 psi and a uniform load of 300 lbs/ft, is approximately 2.16 feet.
The parameters provided, the maximum span (L) of the simply supported beam can be calculated as follows:
Assuming a beam width of 6 inches (0.5 ft) and height of 10 inches (0.83 ft), and a uniform load of 300 lbs/ft:
Calculate the maximum bending moment (M) using the formula:
\(M = (1700 psi * [(1/12) * (0.5 ft) * (0.83 ft)^3] * (0.83 ft)) / (0.83 ft/2)\)
\(M = 144.65 ft-lbs\)
Use the bending moment formula for a simply supported beam to find the maximum span (L):
\(L = sqrt((8 * M) / w)\)
\(L = sqrt((8 * 144.65 ft-lbs) / (300 lbs/ft))\)
\(L = 2.16 ft\)
Therefore, the maximum span of the simply supported beam, using the given timber section with an allowable stress of 1700 psi and a uniform load of 300 lbs/ft, is approximately 2.16 feet.
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1What is the function of an atom's nucleus?
Answer:
The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle
10. A boy on board a cruise ship drops a 30. 0 gm marble into the ocean. If the resistive force proportionality constant is 0. 500 kg/s, what is the terminal speed of the marble in m/s?.
The terminal speed of the marble is 0.588 m/s.
What is Force?The term "force" has a specific meaning in science. At this level, calling a force a push or a pull is quite appropriate. A force is not something an item "has in it" or that it "contains." One thing experiences a force from another. There are both living things and non-living objects in the concept of a force.
We know that,
F = mg ......(1)
where,
F = force
m = mass
g = acceleration due to gravity
Also,
v = F/k ......(2)
where,
v = terminal speed
k = proportionality constant
Substituting the value of F from equation (1) in equation (2)
v = mg/k .......(3)
Given,
m = 30 g = 0.030 kg
k = 0.500 kg/s
g = 9.8 m/s²
To find,
v =?
Put the values in equation (3)
v = mg/k
v = 0.03(9.8)/ 0.500
= 0.294/0.500
= 0.588 m/s
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A car is traveling on a level road with speed v0v0 at the instant when the brakes lock, so that the tires slide rather than roll.
The car travels a distance of (v0²/2μg) before coming to a complete stop, and it takes a time of (v0/μg) to come to a complete stop. The first step is to determine the acceleration of the car. When the brakes are locked, the friction force is maximum.
Hence, the force acting on the car due to the friction force is given by F = μmg where μ is the coefficient of friction, m is the mass of the car, and g is the acceleration due to gravity. In this case, the friction force acts opposite to the direction of the motion of the car.
Therefore, the net force acting on the car is given by F = -μmg.
Since the net force is equal to the mass times acceleration, we get the acceleration of the car as a = -μg.Next, we need to determine the distance traveled by the car before it comes to a complete stop.
The equation for the distance traveled by the car is given by
s = v0t + (1/2)at² where s is the distance traveled, v0 is the initial velocity, t is the time taken to come to a complete stop, a is the acceleration of the car, and t is the time taken to come to a complete stop.
Finally, we need to calculate the time taken by the car to come to a complete stop. The equation for the time taken by the car is given by t = v0/a where t is the time taken to come to a complete stop, v0 is the initial velocity, and a is the acceleration of the car. Hence, the distance traveled by the car before it comes to a complete stop is given by s = v0t + (1/2)at² = v0(v0/μg) + (1/2)(-μg)t² = v0²/2μg.The equation for the time taken by the car is given by t = v0/a where t is the time taken to come to a complete stop, v0 is the initial velocity, and a is the acceleration of the car. Hence, the time taken by the car to come to a complete stop is given by t = v0/a = v0/(-μg) = -(v0/μg). Therefore, the car travels a distance of (v0²/2μg) before coming to a complete stop, and it takes a time of (v0/μg) to come to a complete stop.
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TRUE OR FALSE!!!!!
PLEASE HELP
Igneous rock is formed by volcanoes releasing magma from the mantle, the rock cools and piles up forming a mountain. Rivers direct water to cool magma underground forming metamorphic rock under lake beds.
Answer:
true
Explanation:
this is true, igneous rocks are formed from molten lava when it cools
Answer: True
Explanation:
Calculate the man’s mass. (Use PE = m × g × h, where g = 9.8 N/kg.)
A man climbs a wall that has a height of 8.4 meters and gains a potential energy of 4,620 joules. His mass is about
kilograms
Answer:
mass=56.12kg
Explanation:
PE=mgh
4620=m×9.8×8.4
make m subject of the formula...
m =4620/(9.8×8.4)
m=4620/82.32
m=56.12kg
Natural history research involves ____ unobsevable and unrepeatable past events.
A. Interpreting B. Verifying C. Asking
please answer soon
The ratio of the speed of light in a medium to the speed of light in a vacuum
is called its:
A. angle of incidence
B. Snell's Law
C. angle of refraction
D. refractive index
Answer:D.Refractive Indez
Explanation:
It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".
You're going for "refractive index", but you've got the ratio flipped over.
Answer the following questions
Answer:
answer below
Explanation:
2: net force
3: balanced force
4: unbalnced force
i hope this is right