A quantity of gasoline injected into car engine has a potential energy of 100J. All of this energy is not converted into useable work because

To produce change in motion, a force must be a (n) A) balanced force B) unbalanced force C) frictional force D) gravitational force

the same force is applied to two skateboards. one rolls across the room and the other moves a few feet and comes to a stop. where was there more work done

Red, green, and blue light rayseach enter a drop of water from the same direction. which light ray's path through the drop will bend the most, and which will bend the least? why?

1) Two cars both moving at 27m/s (60mile/hr) pass each other on a road, one moving east the othe other west. 1a) both cars have the same speed (T, F) 1b) both cars have the same velocity (T, F)

Mark and Leo are doing a experiment to see if rocks float. Leo uses a sedimentary rock. Does it float? Why or why not?

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?