You throw a frisbee of mass m and radius r so that it is spinning about a horizontal axis perpendicular to the plane of the frisbee. ignoring air resistance, the torque exerted about its center of mass by gravity isa. 0.b. mgrc. 2mgrd. a function of the angular velocity. e. small at first, then increasing as the frisbee loses the torque given it by your hand.(answer should be a. but explain why)

What is magnetic flux? explain faraday's law of induction.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.