If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is

A. 40 degrees.

B. 80 degrees.

C. 90 degrees.

D. 0 degrees.

True or false kinematics equations are only used by physicists and people who work at NASA

Which would most likely have a direct effect on using wave power to generate electricity?

Which of the following is closest to the speed of sound in air at sea level? a. 3 m/s b. 30 m/s c. 330 m/s d. 3300 m/s

A 150 kg safe on frictionless casters is being raised at 1.20m to the bed of a truck using planks 4m long. The force needed to push the safe up is

Type of lens used by watch repairers concave or convex

Which features involve compression? Select the three correct answers. A. Reverse faults B. Anticlines C. Folded mountains D. Normal faults E. Monoclines

You place a cup of 210 degrees F coffee on a table in a room that is 68 degrees F, and 10 minutes later, it is 200 degrees F. Approximately how long will it be before the coffee is 180 degrees F? Use Newton's law of cooling:

What change occurs to the mass of an object when an unbalanced force is applied to it? A. The mass increases. B. The mass decreases. C. The mass remains the same. D. The mass reduces to zero. E. The mass changes by an indeterminate amount.

The equilibrium price will rise, but equilibrium quantity may increase, decrease, or stay the same if a. demand increases and supply decreases. b. demand increases and supply increases. c. demand decreases and supply increases. d.

The nearest large galaxy to our own is about 2.5 million light-years away. how many meters is that