A 0.013-kg record with a radius of 15 cm rotates with an angular speed of 28 rpm. find the angular momentum of the record.

How do soundproof panels work to keep out noise

you and your friend left a bus terminal at the same time and traveled in opposite directions. Your bus was in heavy traffic and had to travel 20 miles per hour slower than your freind's bus. After 3 hours, the buses were 270 miles apart.

You apply a 100N force to a 20kg block. It doesn't move. Why? What is the mass? Draw a free body diagram.

What is the definition of power?

4. Why is this a double replacement reaction? HCl+Fes - FeCl+H2S

For a vacation, you and your family fly east to west from Boston, Massachusetts, to Seattle, Washington. You notice that your flight back home to Boston is shorter than your flight to Seattle. Which phenomenon causes your flight home to be shorter?

You spy on an anchor on the bottom of a lake. What is the direction and amount of force the water exerts on it: a) zero b) up, equal to the weight of the anchor. c) up, less than the weight of the anchor d) down, equal to the weight of the anchor.

How are electromagnetic waves different from matter waves?

A dc generator is the same as a (n) a. electric motor. b. ac generator. c. armature. d. electric current.

Which of the following best describes scientific knowledge A.) Durable B.) Absolute and never changing C.) Frequently varies