Which of the following properties of light can only be explained by wave theory and not by the Photoelectric effect? reflection refraction interference velocity

A freight car with a mass of 10 metric tons is rolling at 108 km/h along a level track when it collides with another freight car, which is initially at rest.

A physicist found that a force of 1.32 N was measured between two charged spheres. The distance between the spheres was 95 cm. Calculate the force between the two spheres when the distance was increased to 1.25 m?

When determining the number of significant digits in a measurement, a. all zeros are significant. b. all nonzero digits are significant. c. all zeros between two nonzero digits are not significant. d. all nonzero digits are not significant.

You place the spring vertically with one end on the floor. You then drop a book of mass 1.10 kg onto it from a height of 0.600 m above the top of the spring. Find the maximum distance the spring will be compressed.

A lack of sleep can negatively affect many areas of your life. a. True b. False

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