Answer: The gravitational constant of the moon is 
Explanation:
Potential energy is the energy possessed by a body by virtue of its position.
where
P.E = potential energy = 9862.5 J
m = mass of object = 125 kg
g = gravitation constant = ?
h = height of object = 60 m
Putting the values we get :
Answer:
The drum skin oscillates 20 times per second
Explanation:
The frequency of a note is dependent on the mechanical activities that occur when it is produced. A drum is beaten in this case. The oscillation of the drum skin transfers sound waves to the air particles which move at the same frequency before reaching our ears.
If the frequency of the sound wave is 20 Hz this means that the wave is oscillating 20 times in one second. For the drum to produce such a sound, the skin must have been oscillating at the same frequency of 20 oscillations per second too.
Answer:
the answer is...
they start with observations on the object, then make a hypothosis!
hope this helps:)
Explanation:
I believe the answer is D. Hope this helps ;D
