A green light has a wavelength of 485 nm.

What is its frequency? (1 nanometer is 10-9 m)

The water table is the a. lower boundary of the zone of saturation. b. aquifer. c. zone of aeration. d. upper boundary of the zone of saturation.

What types of telescope use a mirror to bring light to focus?

The orbit of the planets in our solar system is generally due to which characteristic of the Sun? A) the Sun's large volume B) the majority of the Sun is hydrogen C) the Sun's strong gravitational field D) the surface temperatures of the Sun are

An amusement park ride spins you around in a circle of radius 2.5 m with a speed of 8.5 m/s. If your mass is 75 kg, what is the centripetal force acting on you? A. 1530 N B. 2168 N C. 255 N D. 2359 N

The chart shows masses and velocities of four objects. Which lists the objects in order, from least to greatest momentum? Answer Y, W, X, Z

Two objects experience a 12 N electrical force between them. What force will the objects experience if the distance between them is doubled?

a submarine moving directly upward in the water at constant speed. The weight of the summer and it is 500,000 N. The submarines motors are off. The magnitude of the buoyant force acting on the submarine is

If the car went 30 km west in 25 min. and then 40 km east in 35 min., what would be its total displacement?

Which of the following is not the name of a space station that was in orbit around Earth?

Relationship between acceleration and free fall