Physics
Physics, 02.03.2021 04:00, ameliaduxha7

Nesseccery An astronaut working on the Moon tries to determine the gravitational constant G by throwing

a Moon rock of mass m with a velocity of v vertically into the sky. The astronaut knows that the

Moon has a density ρ of 3340 kg/m3 and a radius R of 1740 km.

(a) Show with (1) that the potential energy of the rock at height h above the surface is given by:

E = −4πG

3

mρ ·

R3

R + h (2)

(b) Next, show that the gravitational constant can be determined by:

G = 3



v2

ρR2 1 − RR+ h−1 (3)

(c) What is the resulting G if the rock is thrown with 30 km/h and reaches 21.5 m?

answer
Answers: 2

Other questions on the subject: Physics

image
Physics, 22.06.2019 04:20, pippalotta
Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.
Answers: 3
image
Physics, 22.06.2019 07:40, Alex9089435028
Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?
Answers: 3
image
Physics, 22.06.2019 13:40, naylorkanari54
Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these
Answers: 1
image
Physics, 22.06.2019 14:00, kaylaciamp65
The mantle is made up of which structural zones?
Answers: 1
Do you know the correct answer?
Nesseccery An astronaut working on the Moon tries to determine the gravitational constant G by thro...

Questions in other subjects: