A star's apparent magnitude is most closely related to which of the following? Select all that apply.

a. radius.

b. luminosity.

c. distance from Earth.

d. absolute magnitude. E. surface temperature.

A shark is in the ocean trying to catch fish. If the shark swims to the right for 30 meters, then swims to the left for 15 meters, and them swims back to the right for 50 meters. What is the shark's displacement?

Much of the pollution in our oceans comes from: organic pesticides fumes and smog car exhaust sewage and industrial waste

Consider the following situations: A car is moving along a straight road at a constant speed. A car is moving along a straight road while slowing down. A car is moving along a straight road while speeding up. A hockey puck slides along a smooth (i.

How has the theory of evolution changed how biologists classify organisms?

What is the speed of sound at a temperature of 56°C?

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