An electron (m = 9.11 x 10 ^-31 kg) moves in a circle whose radius is 2.00 x 10^-2 m. If the force acting on the electron is 4.60 x 10^-14 N, what is the speed?

A person's weight changes at a higher elevation Because the effect of gravity decreases as the person gets further away from Earth the effect of gravity increases as the person gets further away from Earth the person loses mass as the elevation

Which statement is false? Select one: A. Arrays that are defined static are automatically initialized once at compile time. B. A static local variable exists for the duration of the program. C. A static local variable is visible to other functions.

Why is a baseball thrown by a pitcher considered to have projectile motion? It gains a lot of kinetic energy. It has horizontal and vertical motion. It gets pulled to the ground by gravity. It moves in a diagonal direction.

Which of the following is a common feature among the four inner planets? atmosphere composition distance from the sun rocky surface temp range

An object that is accelerating may be A. slowing down. B. gaining speed. C. changing direction. D. all of the above

Physical Properties include ... A. taste, odor, and is corrosive B. taste, texture, and forms hydrogen gas. C. taste, odor, and texture D. texture, odor, and is corrosive

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 441J of energy to the room?

What is the difference between convex and concave mirrors and lens?

Which is the best example of Newton's Second Law of Motion? A student has on roller skates and he decides to push against the railing. He immediately begins to roll backwards. A small ball and a larger ball with greater mass are dropped from a roof.

Which of the following represents a car traveling 20 miles/hour? 40 miles traveled in 2 hours 60 miles traveled in 6 hours 40 miles traveled in 3 hours 10 miles traveled in 5 hours