A box is dropped onto a conveyor belt moving at 4.0 m/s. If the coefficient of friction between the box and the belt is 0.40, how long will it take (in s) before the box moves without slipping

Change in momentum and Impulse Work out the changes in momentum in the following cases: a a mass of 3 kg slows from 3 m/s to 1.5 m/s (2 marks)

A beam of hydrogen molecules (h2) is directed toward a wall, at an angle of 55 with the normal to the wall. each molecule in the beam has a speed of 1.0 km/s and a mass of 3.3 1024 g. the beam strikes the wall over an area of 2.

The lowest-pitch tone to resonate in a pipe of length L that is closed at one end and open at the other end is 200 Hz. Which one of the following frequencies will NOT resonate in the same pipe a. 1800 Hz b. 1000 Hz c. 1400 Hz d. 600 Hz e. 400 Hz

What is the wavelength of a wave? A. the amount of time that one full cycle takes. B. the distance from the beginning to the end of a cycle. C. the amount of cycles that occur in a given time. D.

The total potential and kinetic energy of all the microscopic particles in an object make up its a. nuclear energy. b. thermal energy. c. electric energy. d. chemical energy.

Why did the chicken cross the road.

A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 rad/s. A monkey drops a 9.29 kg bunch of bananas vertically onto the platform.

7. A type of non-renewable energy would be: O wind O petroleum O water solar

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.