34. a steam engine operates between 300k and 600k, the maximum possible efficiency of this
engine is
a. 100%
b. 75%
c. 50%
d. 25%

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

Time remainin52: 42the chart shows data for a moving object.which conclusion is best supported by the information inthe chart? time (s)velocity (m/s

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.