Degausser creates a magnetic field that erases data from magnetic storage media.

a. True

b. False

A skater is standing still on a frictionless rink. Herfriend throws a Frisbee straight at her. In which of the followingcases is the largest momentum transferred to the skater? a) the skater catches the frisbee and hols onto it.

A small kid sits on a bike (Anita). A bigger and stronger person (Jamy) pushing the kid so that the kid starts speeding up. (neglect friction). Mark all correct statements about the forces between them. A.

An energy-efficient water heater draws 4 amps in a 220-volt circuit. It costs $75 more that a standard water heater that draws 18 amps in a standard 115-volt circuit.

Where do incident rays that are parallel to the principal axis converge to after reflecting off a concave mirror?

Which statement is true of a convex lens? A. It is thicker at the edges and thinner at the center. B. It is thinner at the edges and thicker at the center. C. It is uniformly thick. D. It is uniformly thin.

Why is the earth called the miracle planet?

Degausser creates a magnetic field that erases data from magnetic storage media. a. True b. False

A submarine is carefully navigating its way to the seafloor. It sends out "pings"-a radar wave-as it descends to keep track of its location in relation to the ground. The wavelength of the radar as it leaves the ship is 3 cm.

Which of the following is true for a system consisting of a mass oscillating on the end of an ideal spring? A. The kinetic and potential energies are equal at all times. B. The kinetic and potential energies are both constant. C.

What is the chain of energy transfers that create surface ocean currents on the ocean