Which describes a sound wave?

A) A sound wave travels in a vacuum.

B) A sound wave is a longitudinal wave.

C) A sound wave is an electromagnetic wave.

D) A sound wave has one constant speed.

Driver a is cruising along enjoying the fall colors. driver b starts her car at the instant he passes her. their velocities are shown as functions of time in the graph below. at what instants in time on the graph are drivers a and b side by side?

Which is the correct unit for electric power

A steel beam is rotated in a horizontal plane to provide the centripetal acceleration for training pilots. If the pilot sits 2.

Tina and her puppy are tugging on a rope each pulling on opposite ends when is tina doing work? When is Tina doing work?

Which of the following safety devices provides a weak link in a circuit that will melt if it received too much current, thus breaking the circuit and stopping the flow of electricity? a. circuit breaker b. fuse c. gfci d. insulation

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...

What type of ethic is life-centered and views humans as just one component life on Earth

Which formula describes acceleration? m/s^2 m/s s/m m2