Why is an understanding of light important to astronomers?

A student is measuring the effects of an electric circuit on a compass, and he is testing to see increasing the current will cause the compass needle to change direction faster. He does one trial using a 9-volt battery and another trial using a 1.

If a person has the values for an object's density and volume, what value can be calculated? the object's size the object's mass the shape the object forms in a container the amount of space the object takes up

A car is making a left turn, therefore, what type of force is acting on the car? a. a zero net force b. a balanced force c. an unbalanced force

Traveling in circle requires a net force

Is france a example of a developed country true or false

describe the relationship that exists between amplitude of a wave and the amount of energy that the wave carries

Recognize the relationship between stiffness of the medium and the speed of a wave.

Which of the following describes density only in terms of metric units? a. kilograms per cubic meter b. pounds per square meter c. pounds per cubic foot d. grams per cubic foot

A child drops a ball from a window. The ball strikes the ground in 3 seconds. What is the velocity of the ball the instant before it hits the ground?

Lc circuit consists of a 20.0 mh inductor and a 0.150 µf capacitor. if the maximum instantaneous current is 0.400 a, what is the greatest potential difference across the capacitor?