Which of the following statements is true? a. energy can change from one form to another. b. matter and energy do not interact. c. energy cannot be stored. d. energy does not transfer from place to place.

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball

How many molecules are present in 3 mols of silicon dioxide (sio2)?

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.