A cat with a mass of 5 kg sits on a branch that is 26 m off the ground. What is

its gravitational potential energy? The acceleration of gravity is 9.8 m/s2

A. 872 J

B. 1274 J

C. 638 J

D. 244 J

Who first arranged the elements according to atomic mass and noticed a periodic recurrence of their physical and chemical properties? A. Henry Moseley B. Antoine Lavoisier C. John Dalton D. Dmitri Mendeleev

Which two laws were discovered by Antoine Lavoisier and Joseph Proust

A hockey puck of mass 0.16 kg is slapped so that its velocity is 50 m/sec. It slides 40 meters across the ice before coming to rest. How much work is done by friction on the puck? A. + 4 J B. - 60 J C. - 200 J D. - 340 J

A student is testing her reaction time by trying to keep a light bulb on for exactly 4 seconds by matching a stopwatch. When she turns the light bulb off, the stopwatch reads 4.13 seconds. What is her reaction time?

Which of the following statements best describes the basic structure of an atom? a. Electrons and protons are in motion around a nucleus that contains neutrons. b. Neutrons are in motion around a nucleus that contains protons and electrons. c.

Recently, some information about a distant planet was learned. It has a radius of 6000000 meters, and the density of the atmosphere as a function of the height h (in meters) above the surface of the planet is given by δ (h) =

Which of the following is not a good approximation of the relationship between independent and dependent variables? A. independent: first, dependent: next B. independent: input, dependent: output C. independent: cause, dependent: effect D.

A force is applied to a 13.0 kg wagon to pull it down the sidewalk at a constant speed. The coefficient of kinetic friction is 0.65. Considering the resulting frictional force, what is the magnitude of the applied force?

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planers in orbit around the Sun.

What wave-like property of light causes it to bend when encountering an opening? A. Reflection B. all the above c. Refraction d. none of the above e. diffraction