Physics, 03.03.2021 06:20 casandraserrat375
Please answer this necessarily with an explanation and I will mark the brilliant
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
8π
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?
Answers: 2
Physics, 21.06.2019 21:10, benwil0622a
State one advantage and one disadvantage of using a plane mirrior as a driving mirrior
Answers: 1
Physics, 22.06.2019 20:30, laylay2380
Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm
Answers: 3
Please answer this necessarily with an explanation and I will mark the brilliant
An astronaut worki...
Mathematics, 06.03.2021 23:20
Mathematics, 06.03.2021 23:20