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erik [133]
3 years ago
15

The diameter of the moon is a little less than the distance across the United States. Please select the best answer from the cho

ices provided T F
Physics
2 answers:
dlinn [17]3 years ago
6 0

Answer:

true

Explanation:

The diameter of the Moon is 3474 km. The distance across the United States, from Florida to Washington, is 4509.382 km.

katrin2010 [14]3 years ago
5 0

It is true that the diameter of the moon is a little less than the distance across the United States.

Answer: Option A

<u>Explanation: </u>

Moon is the natural satellite of our Earth. It revolves around the Earth due to the gravitational force acting on the moon. The moon also has its own gravitational force. The gravitational force of moon is \frac{1}{6} t h of the gravitational force on Earth.

The mass of moon is 7.34 \times 10^{22} kg while the mass of the Earth is 5.972 \times 10^{24} kg. So the moon’s mass is very very less than that of Earth. So the diameter of moon is found as 3,472 km while the diameter of Earth is 12,742 km.

Thus the dimension of moon is \frac{1}{4} t h of the dimension of the Earth. Even the diameter of moon is little less than the distance across the United States as the distance across United States is 4509 km.

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50 cm to mA flat coil of wire consisting of 20 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform ma
sukhopar [10]

Answer:

0.025 A

Explanation:

A = 50 cm^2 = 50 x 10^-4 m^2

B2 = 6 T, B1 = 2 T

db = 6 - 2 = 4 T

dt = 2 s

R = 0.4 ohm

Let i be the magnitude of induced current and e be the induced emf.

According to the Faraday's law of electromagnetic induction

e = dФ / dt

e = A dB / dt

e = 50 x 10^-4 x 4 / 2 = 0.01 V

i = e / R = 0.01 / 0.4 = 0.025 A

3 0
3 years ago
Newton’s Laws of Motion are absolute in classical physics. One example that uses all three laws simultaneously is the firing of
Debora [2.8K]
I think that by "Classical physics" is meant low speed things. By low speed, I think is meant speed far below very roughly half the speed of light, so that Relativistic, special or general, effects can be ignored. Or at least it is hoped that they can be ignored. 
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Just as something will stay still until it is moved - inertia - so once set in uniform motion in a straight line, the thing will continue in that motion, theoretically for ever or until something alters its momentum. Newton's first law is to the effect of "every body continues in a state of rest or uniform motion in a straight line unless acted on by a resultant external force". Which, I think, is where the concept of inertia stems from. 
I think that the above mostly tcuches on the 3 laws.Any more help needed, please ask.
6 0
2 years ago
Read 2 more answers
A particle of mass 4.00 kg is attached to a spring with a force constant of 100 N/m. It is oscillating on a frictionless, horizo
jeka57 [31]

Answer:

a. A = 0.735 m

b. T = 0.73 s

c. ΔE = 120 J decrease

d. The missing energy has turned into interned energy in the completely inelastic collision

Explanation:

a.

4 kg * 10 m /s + 6 kg * 0 m/s = 10 kg* vmax

vmax = 4.0 m/s

¹/₂ * m * v²max = ¹/₂ * k * A²

m * v² = k * A²  ⇒ 10 kg * 4 m/s = 100 N/m * A²

A = √1.6 m ² = 1.26 m

At = 2.0 m - 1.26 m = 0.735 m

b.

T = 2π * √m / k ⇒ T = 2π * √4.0 kg / 100 N/m = 1.26 s

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c.

E = ¹/₂ * m * v²max =

E₁ = ¹/₂ * 4.0 kg * 10² m/s = 200 J

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d.

The missing energy has turned into interned energy in the completely inelastic collision

3 0
3 years ago
What is the modern periodic table of elements?
Kamila [148]
C is the correct answer
3 0
2 years ago
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Is the energy of a wave is calculated by squaring the frequency of the wave?
Misha Larkins [42]
Nope.
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E = hf

Hope this helps!
5 0
3 years ago
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