A 100 kg roller coaster car is located at the top of a hill where the height is 20 m. What is the velocity when it reaches the bottom of the hill? 5.5 m/s 11.2 m/s 16.7 m/s 19.8 m/s

Light has both a wave and a particle nature. Particles have a wave nature as well, and therefore. A. Their mass is not well defined. B. Their position can not be specified with absolute precision. C.

A 2-kg book falls off a shelf. it hits a student traveling 2 m/s. how much kinetic energy does the book have?

You did 200 of work lifting a 150 newton-pack. how high did you lift the bookbag

Why is it dangerous to be exposed to X-rays but not (or at least much less) dangerous to be exposed to radio waves?

Which quantity is measured as electrical power? the time rate of energy transfer the net amount of energy transferred into a circuit the number of charges flowing in a conductor per unit time the amount by which a circuit element slows the flow of

A 4.0-kilogram object is accelerated at 3.0 meters per second2 north by an unbalanced force. The same unbalanced force acting on a 2.0-kilogram object will accelerate this object toward the north at (1) 12 m/s2 (3) 3.0 m/s2 (2) 6.0 m/s2 (4) 1.5 m/s2

Religion, astrology, and handwriting analysis are all believed in and used by many people. How are they different from psychology?

A ball is thrown straight down a at 10.0 m/s from a 32.4 m-high building. How long does it take to reach the ground? What is the speed the moment before it hits the ground?

Based on the video, which venus phase would be impossible to see (from earth) of venus orbited earth as described in ptolemy's earth-centered model

Darrel noticed that his finger felt warmer in the ice water then did his left finger which of the following does the experiment show