While rowing across the lake during a race, Tom does 4,500 of work on the cars in 300

What is his power output in watts?

The work done by an engine equals one-fourth the energy it absorbs from a reservoir. True or False

If you are going 30 miles an hour in good condition, it will take how many feet to stop.

Which of these is most likely a characteristic of a parent isotope before it releases radioactive particles? Select one: a. stable nucleus b. stable electrons c. unstable electrons d. unstable nucleus

A plane starts from rest and accelerates uniformly over a time of 20 seconds for a distance of 300 meters. Determine the plane's acceleration.

Thermal escape of an atmosphere is most pronounced on worlds where the gravity is low and the temperature is high. a. True b. False

A rock with mass m = 3.60 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 15.

Two electrons are 2.3nm apart. What is the force between two electrons?

3. In a demonstration learning activity, A. the teacher shows children how something works or how to complete an entire activity. B. each child shows and tells about a favorite toy. C.

A 0.12 kg paper airplane flies in a straight line at a speed of 1.3 m/s. How much kinetic energy does the airplane have?

Each atom is composed of electrons and positive material. The mass of the atom is evenly spread throughout the atom. Neutrons are located in the center of the atom. Positive charge occupies a very small volume in the atom.