A 4-kg cat is resting on a bookshelf that is 2 m high. What is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8m/s^2?

a. 6 J

b. 8 J

c. 20 J

d. 78 J

why can you model the thermal energy of an object as the "mechanical energy" of the particles that make it up?

Consider a single photon with a wavelength of lambda, a frequency of v, and an energy of E. What is the wavelength, frequency, and energy of a pulse of light containing 100 of these photons? A) 0.01lanbda, 0.01v, and 0.01E B) 0.

Which change decreases the resistance of a piece of copper wire? (1) increasing the wire's length (2) increasing the wire's resistivity (3) decreasing the wire's temperature (4) decreasing the wire's diameter

Which procedure is an attempt to correct a genetic disorder by replacing a mutated gene with a normal allele? a. selective breeding b. cloning c. artificial selection d. gene therapy

An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 7000 N {/rm N}.

A tennis ball may leave the racket of a top player on the serve with a speed of 60.0 m/s. If the ball's mass is 0.0600 kg and it is in contact with the racket for 0.

Cells are known as the foundation of all life. How have these small structures changed our planet?

What does it mean to dissolve something

Why is a neutral object attracted to a charged object?

The international space station revolves around earths surface. which of the following statement s is true? a. it has no energy because it is stationary b. it has potential energy, but does not have kinetic energy c.