In which situation is there NO work being done?

A) a car being pushed 100 m

B) a 25 N force applied over 6 meters

C) a mouse pushing a crumb across the floor

D) a 10 N force applied to a stationary wall

If a polythene rod is rubbed with a dry cloth, what kind of charge would it gain? A) positive, due to extra protons. B) positive, due to electrons lost. B) negative, due to protons lost. D) negative, due to extra electrons.

A mass on a spring vibrates in simple harmonic motion at an amplitude of 8.0 cm. If the mass of the object is 0.20 kg and the spring constant is 130 N/m, what is the frequency?

Adam wants to work in the field of forensic science and follow the rules for handling evidence. Which organization can he join to fulfill this aspiration?

a pillow, a textbook and a paper airplane are dropped from the top of a tall building at the same time. consider what you have learned about air resistance. which object reaches the ground first?

If there is no electric current flowing through a wire then what happens to the magnetic field

The type of current supplied by a battery in a flashlight is an alternating current. True or False?

A. What is the change in internal energy if 500 J of heat is added to a system and 100 J of work is done by the system? Show your work. b. Describe two sets of conditions of heat and work that cause a decrease in internal energy. c.

Which of the following radioactive emissions is the most penetrating? alpha particles beta particles gamma rays

A car has a unibody-type frame and is supported by four suspension springs, each with a force constant of 47100 N/m. The combined mass of the car's frame and everything inside it (the engine, the seats, the passengers, etc.) is 1190 kg.

A ball is thrown upward with an initial velocity of 20 m/s how high will it go