Answer:
273 Kelvin
Explanation:
If -273 Celsius is 0 Kelvin, then 273 Kelvin will be 0 Celsius.
The gravitational acceleration on the surface of planet A is:
where G is the gravitational constant,
is the mass of planet A and
its radius.
Similarly, the gravitational acceleration on the surface of planet B is:
The ratio between the gravitational acceleration on planet A and B becomes:
The problem says that the two masses are equal:
while planet A has 3 times the radius of planet B:
. Substituting into the ratio, we get:
so, gravity on planet B is 9 times stronger than planet A.
Answer:
60 kg
Explanation:
An astronaut weighs 588 N on the earth
He also weighs 98 N on the moon
Therefore the the mass of the astronaut on the moon can be calculated as follows
= 588/98
= 6 × 10
= 60 kg
Hence the mass of the astronaut on the moon is 60 kg
B. the mass of the building attracts you upward slightly
Answer:
Each climber had to eat 72 slices of bread to compensate for the increase of the gravitational potential energy of the system climbers-Earth
Explanation:
Hi
One piece of bread releases about of energy in the body, but efficiency in converting the body's chemical energy into mechanical work is 9.5 %, so .
On the other hand, we need to calculate the total work to reach the top of Mt. Everest
, so
Finally, we have that