An electric current that is varied to represent information is a (n)

a. electronic signal

b. digital signal

c. integrated circuit

d. electromagnetic wave

You use energy to heat your home. what ultimately happens to the energy that you pay for in your heating bill?

Which is the correct equation, Q = m * c * ΔT, rearranged to solve for specific heat?

Describe three forces that are acting in the situation described below A factory worker carries a box of nails. His shoe slips on a patch of oil on the ground, and he drops the box. The box opens, and the nails all fall to the floor.

When light enters a piece of glass from air with an angle of θ with respect to the normal to the boundary surface?

How do you find the velocity when an object is at rest?

When a siren is approaching you, how does the wavelength of the waves reaching you compare to the actual wavelength that the siren emits?

In a harbor, you can see sea waves traveling around the edges of small stationary boats. Why does this happen?

Correct unit of speed

Technician A says that for best results, loosen the fastener immediately after spraying it with penetrating oil. Technician B says that rusted fasteners may be loosened by tapping with a hammer. Which technician is correct? a. technician A only b.

A roller coaster track is 3,000 meters long. It takes 100 seconds to travel once around the roller coaster. Is the velocity constant throughout the trip? Explain.