Calculate the work done. a tractor pulls on a tree for 3 minutes with a force of 100 pounds. 1000 ft-lbs 3000 ft-lbs unknown zero it is: unknown

A force of 50 pounds is directed 30 from the horizontal, find the vector that represents this force.

How the behavior of waves is affected by medium

Which of the following is a component of skill-related fitness?

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a 6 iron. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 25 m/s at an angle 30° above the horizontal.

6. how do the number of electrons flowing into a light bulb compare to the number of electrons flowing out of it?

Which of these would you include ina free body diagram for a bicycle-plus-rider taken together as the bicycle is being pedaled up the hill?

What are two possible uses of genetic engineering

How many joules are expended by a 70 kg man climbing up 6m of stairway? How much work is done if the climbing takes place on the surface of the moon? (Assume that the acceleration due to gravity on the moon's surface is 1.6 m/s2

A baseball flying through the air has kinetic energy because of its motion. true or false?

How many poles does Jupiter's magnetosphere have? a. 2 c. 8 b. 4 d. 9