A spaceship takes off vertically from rest with an acceleration of 30.0 m/s 2 . What magnitude of force F is exerted on a 53.0 k
1 answer:
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Answer:
R = 5.73 m
Explanation:
For an angle of rotation through 21 degree we know that
arc length is given as
now we know that
Arc = 2.1 m
Angle = 21 degree
so now we have
Answer:
581 kJ, work was done by the system
Explanation:
According to the first law of thermodynamics:
where
is the change in internal energy of the system
Q is the heat absorbed by the system (positive if absorbed, negative if released)
W is the work done by the system (positive if done by the system, negative if done by the surrounding)
In this problem,
Therefore the work done by the system is
And the positive sign means the work is done BY the system.