What is the ideal mechanical advantage of a machine that changes only the direction of the input force?

Select all the following that describe velocity

How does the resistance change as you add bulbs to a series circuit?

Which of the following statements about polarized materials is NOT true? Two polarized filters that have polarizing axes parallel to each other will block all the light passing through them.

Where could convection current form check all that apply

Choose the letter of the answer that best completes the statement or answers the question. 1. If a vehicle increases its speed from 20 mph to 60 mph, its braking distance will increase by a. 3 times. b. 4 times c. 9 times. d. 40 times.

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