Redshifts are ...

1. galaxies that are moving closer together

2. galaxies that are moving farther apart

3. galaxies that are growing in size

4. galaxies that are shrinking

Sharon throws a 0.20 Kg with an acceleration of 10 m/s/s. (a) What force did she exert on the ball? (b) What force did the ball exert on her?

Which most likely could cause acceleration? Select four options. a flat road wind water movement a hill Da stop light

A 2000 kg boat drifts along the waves at a velocity of 3 m/s. What is the kinetic energy of the boat?

The motion of a car on a position-time graph is represented with a horizontal line. What does this indicate about the car's motion? A. It's not moving. B. It's moving at a constant speed. O C. It's moving at a constant velocity. OD. It's speeding up.

A river flows due south with a speed of 5.00 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.00 m/s due east. The river is 780 m wide. Part A What is the magnitude of his velocity relative to the earth

What is the oxidation state of beryllium

An object moves with constant acceleration 4.00 m/s^2 and over a time interval reaches a final velocity of 12.0 m/s. a) If its initial velocity is - 6.00 m/s, what is its displacement during the time interval.

The light bulb converts electrical energy into light and

A simple pendulum takes 32 sec to complete 20 oscillations. what is the time period of the pendulum?

An elevator car, with a mass of 450 kg is suspended by a single cable. At time = 0s, the elevator car is raised upward. The tension on the cable is constant at 5000N during the first 3 seconds of operation.