Your brother's mass is 40.0 kg, and he has a 1.30 kg skateboard. what is the combined momentum of your brother and his skateboard if they are going 8.50 m/s?

Two 8.0 Ω lightbulbs are connected in a 12 V series circuit. What is the power of both glowing bulbs?

The speed of sound in water is measured to be 1485 m/s. what is this in mph?

If a circuit has no components in it will the voltage be high or low

a sleepy atudent drops a calculator out of a window yhata 20.7 m off the geound. we can ignore air resistance. what js the velocity of the calculator after falling for 1.8 s

What is the difference between an experimental variable and a control variable? Give an example to explain your answer.

How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200n

Which is the best description of the acceleration of an object? an airplane changes elevation from 10,000 ft to 5,000 ft a cars velocity changes from 25 m/s to 20 m/s in 5 seconds a runner travels 100 m in one minute a remote-control car speeds up

What is the mechanical advantage of a machine that exerts a force of 160 N on an object when a person exerts a force of 20 N on the machine?

Suppose your hair grows at the rate of 1/55 inch per day. Find the rate at which it grows in nanometers per second. Because the distance between atoms in a molecule is on the order of 0.

A water skier is pulled behind a boat. When the skis push down on the water, what is the reaction force? A. The skier pulls back on the boat. B. Earth's gravity pulls down on the skis. C. The water pushes up on the skis. D. The boat pulls the skier.