A circuit has a voltage drop of 120 V across an 80 resistor that carries a current of 0.75 A. How much power is used by the resistor? Use P = VI.

A. 90 W

B. 60 W

C. 9600 W

D. 2 W

By what factor would you need to adjust the length of a pendulum to make the period of 1/2 of what it used to be?

Nebulae are made of hydrogen helium and traces of heavier metal elements such as iron that are

Two football players each applied 100 n of force to sack the qb and move him 3 meters downfield. How much work was done?

You watch a distant lady driving nails into her front porch at a regular rate of 2 strokes per second. You hear the sound of the blows exactly synchronized with the blows you see. And then you hear one more blow after you see her stop hammering.

Solar cells convert what type of energy into electrical energy? A. chemical B. thermal C. nuclear D. electromagnetic

A hot air balloon is rising straight up at a constant speed of 7 m/s. when the balloon is 12.0 m/s above the ground, a gun fires a pellet straight up from ground level with an initial speed of 30.0 m/s.

The atmosphere is an). O element O molecule O mixture O compound

What is the velocity of the car, in meters per second, just after it hits a 135-kg deer initially running at 10.5 m/s in the same direction? Assume the deer remains on the car.

True or false the metric unit used to describe weight as a measure of the force of gravity is called a newton

One car travels 40. meters due east in 5.0 seconds, and a second car travels 64 meters due west in 8.0 seconds. During their periods of travel, the cars definitely had the same