Two students go to play basketball. They notice the ball is flat (it won t bounce). They decide to pump it up with air. After it is pumped with air, will the ball have more, less, or the same amount of mass as before air was added?

As shown in the figure below, Cindy rushes 30 m toward her truck. She notices she forgot her lunch and returns back to the house. Her total travel time is 90 s.

a student is observing a pendulum swinging back and forth. Each time it swings the pendulum bob reaches a lower maximum and eventually it comes to rest and hangs straight down vertically. What happens to the total energy of the pendulum? Does this violate the law of conservation of energy?

The glucometer applies a potential difference of 0.90 volts across a blood sample. The glucose concentration of the blood sample is 0.98 grams/litre. Determine the current in the blood sample