Without anyone helping her, Irma lifted her suitcase weighing 98 N a distance of 1.5 meters then carried it 2 meters. How much work did she do? Explain your answer.

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

What properties of a moving object are used in determining the object's energy of motion

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than