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3 years ago

How would the moon appear from Earth if the moon did not rotate?

2 answers:

andrey2020 [161]3 years ago

6 0

It would mean that only one side of earth would be light and the other dark all the time also we would only see the sun on one side and on the other we see the moon

n200080 [17]3 years ago

4 0

As the Earth rotates, the Moon rotates the same, hence why we only see one side of the Moon at any time, but if it stopped rotating we would see different parts of it as we rotate...basically it wouldn't look the same all the time (source: my brain, or 7th grade science class: either or)

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A 480N sphere 40.0cm in radius rolls without slipping 1200cm down a ramp that is inclined at 53 0 with the horizontal. What is t

IgorC [24]

As we know that sphere roll without slipping so there is no loss of energy in this case

so here we can say that total energy is conserved

Initial Kinetic energy + initial potential energy = final kinetic energy + final potential energy

$\frac{1}{2}mv_i^2 + mgh = \frac{1}{2}mv^2 + \frac{1}{2}I\omega^2+ mgh'$

as we know that ball start from rest

$v_i = 0$

height of the ball initially is given as

$h = Lsin\theta$

$h = 1200sin53 = 960 cm$

also we know that

$I = \frac{2}{5}mR^2$

also for pure rolling

$v = r\omega$

also we know that

$480 = m*9.8$

$m = 49 kg$

now plug in all data in above equation

$480*9.60 + 0 = \frac{1}{2}*49*(0.40*\omega)^2 + \frac{1}{2}*\frac{2}{5}*49*(0.40)^2\omega^2 + 0$

$4608 = 3.92\omega^2 + 1.568\omega^2$

$\omega^2 = 839.65$

$\omega = 29 rad/s$

So speed at the bottom of the inclined plane will be 29 rad/s

7 0

3 years ago

For a wave, what term is defined as the maximum height of a crest, or depth of a trough, relative to the normal level? for a wav

sammy [17]

The appropriate response is amplitude. Amplitude is the target estimation of the level of progress (positive or negative) in environmental weight (the pressure and rarefaction of air atoms) created by sound waves.

I hope the answer will help you.

6 0

3 years ago

How many significant figures does 50.003 00 have?

Serhud [2]

5 sig figs I think that

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3 years ago

Differentiate metal nonmetal and metalloids on the basis of physical and chemical properties

sashaice [31]

Answer: hi how re u ??

Explanation:

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