What happens when a penny is dropped from a height of 20 meters? A. it falls at a constant velocity B. its mass doubles for every second it falls C. the force of gravity causes it to accelerate D. it changes direction every 9.8 meters

What is the energy equivalent of an object with a mass of 1.83 kg?

What does mass, volume, and temperature measure?

What happen when a hurricane crosses over land

5. which event marks the end of both the Paleozoic era and the mesozoic era? A. cenozoic B. mesozoic C. paleozoic D. precambrian

What mixture is a blueberry muffin

A book rests on a table, exerting a downward force on the table. the reaction to this force is:

Steve hears a siren emitting a frequency of 10 kHz when it is at rest. What frequency will Steve hear if the siren moves toward him at 30 m/s? Assume the speed of sound is 340 m/s. Answer options are: a. 11 kHz b. 10 kHz c. 0 kHz d. 9 kHz

What is the efficiency of a machine that has work input of 40 joules and work output of 35 joules

What happens to an object if the forces acting on it are unbalanced?

A 92-kg astronaut and a 2000-kg satellite are at rest relative to a space station. the astronaut pushes on the satellite, giving it a speed of 0.14 m/s directly away from the station.