Q6 KSS Energy from petrol is used to operate an engine. The engine drives a generator, which produces
electrical energy.
energy from
petrol
work done
by engine
electrical
energy
engine
generator
400 J
120 J
100 J
What is the overall efficiency of the process?
А
25 %
XB
30 %
C 55%
XD
83 %

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)