An isotope has the same number of but a different number of than other atoms of the same element.

Static discharges occur when

A tennis ball is released from a height of 2.0 m above the floor, and then bounces three times. With each bounce, dissipative forces cause it to lose 16.0% of its mechanical energy. How high does it reach after the third bounce?

Why are overuse injuries particularly frustrating set-backs?

At a horse race, all horses started from rest. As soon as the gates were open the horses started to trot. After 300s, Blacky was accelerating at 3m/s2. What is his final velocity after 300s?

A toy train has an average speed of 3 m/s. If it takes 6.25 seconds for the train to go once around a track, how long is the track?

A heavy rope, 50 ft long, weighs 0.5 lb/ft and hangs over the edge of a building 120 ft high. how much work is done (in ft-lb) in pulling half the rope to the top of the building?

Does adding a neutron to an atom's nucleus makes it an ion?

What is the difference between a fault-block and upwarped mountains?

Which of the following is not one of the reasons to properly warm up before exercising? A. Develop overall flexibility. B. Increase blood flow to the muscles and raise body temperature. C. Prevent injuries such as strains sprains and muscle cramps.

you are not chilly when swimming in warm water. but when emerging from warm water on a warm summer day, you feel chilly if the wind is blowing. Explain