Which choice best expresses what the reader learns about the narrator in paragraphs 2 and 3? A
That his specialty is infectious laughter
B
That his job is very tiring
C
That bad comedians value his services
D
That he is very good at his job

Why does the input force have to be greater than the force needed to lift the bale?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?