If you push a book against a wall hard enough it will not slide down even though gravity is pulling it. Use what you know about friction and newtons laws of motion to explain why the book does not fall

A wave travels an average distance of 6 meters in 3 seconds. What is the wave's velocity?

na drewnianej podłodze znajduje się skrzynka o masie 18 kg. W pewnym momencie pod wpływem siły skierowanej poziomo skrzynia zaczyna poruszać się z przyspieszeniem 0,68 m/s2. Podczas ruchu na skrzynie działa siła tarcia równa 0,2 ciężaru skrzyni.

What is the change in temperature of a 2.50 L system when its volume is reduced to 1.00 L if the initial temperature was 298 K?

The speed of sound in air is about 340 meters per second. How long does it take a sound wave to travel a distance of 7800 meters

A man holding a rock sits on a sled that is sliding across a frozen lake (negligible friction) with a speed of 0.460 m/s. The total mass of the sled, man, and rock is 95.0 kg. The mass of the rock is 0.

What happens in an open circuit

When analyzing forces, it is allowable to break the motion and forces into horizontal and vertical components.

What is the density of a rock which has a mass of 35 grams and a volume of 7.0 cubic centimeters?

Which statement best describes the relative conductivity of semiconductors? a. They are the most conductive elements. b. They are the least conductive elements. c. They are more conductive than metals but less conductive than nonmetals. d.

A tire swing is released from some initial height such that the speed of the tire at the bottom of the swing is 2.5 m/s. What is the initial height of the tire? Note: g = 9.8 m/s2 A 0.13m B 0.16m C 0.32m D 3.1 m