Answer:
56 kg
Explanation:
The change in potential energy of the man is given by:
where
m is the man's mass
g is the gravitational acceleration
is the change in height of the man
In this problem, we have:
is the gain in potential energy
g = 9.8 m/s^2 is the gravitational acceleration
is the change in height
Re-arranging the equation and substituting the numbers, we find the mass:
<u>Answer:</u>
The spaceship's position when the engine shuts off =
<u>Explanation:</u>
Initial location of spaceship = (600 i - 400 j + 200 k)*= (600 i - 400 j + 200 k)*
Initial velocity = 9500 i m/s
Acceleration = (40 i - 20 k)
Time = 35 minute = 35 * 60 = 2100 seconds
We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
Substituting
So final position =
=
The spaceship's position when the engine shuts off =
Two isotopes of helium ( helium 3 and helium 4) show superfluidity whem they are liquified by cooling to a very low specific temperature. One isotope of rubidium and lithium posses this property at low temperature.
Hope It Helps!