If a student tried to lift a 350 N box upwards with a lever that is 75 cm long, how much force would they need to provide given a fulcrum 20 cm away from the box. 1312.5 N. 93.3 N. 65.6N. 2333N.

A 1.0-kg standard cart A collides with a 0.10-kg cart B. The x component of the velocity of cart A is + 0.70 m/s before the collision and + 0.50 m/s after the collision. Cart B is initially traveling toward cart A at 0.

8. The ratio of output power to input power, in percent? A. work. B. efficiency. C. horsepower. D. conductivity.

For safety reasons, a worker's eye travel time in a certain operation must be separated from the manual elements that follow. The distance the worker's eyes must travel is 20 in.

Calculate the acceleration if you ride your bike down hill and the initial velocity is 2 km/hr and the final velocity is 23 km/hr and it takes you. 25 hours to go down the hill

A crate remains stationary after it has been placed on a ramp inclined at an angle with the horizontal. Which of the following statements is or are correct about the magnitude of the friction force that acts on the crate? Choose all that are true: a.

Two passengers leave the airport at Kansas City, Missouri. One flies to Los Angeles, California, in 3.5 hr and the other flies in the opposite direction to New York City in 3.5 hr.

What is the term for the basic unit of electric current? The basic unit of electric current is the.

When a sailboat overtakes a powerboat, which vessel is the stand-on vessel?

Both matter and energy can eneter and exit which of the following systems? A. open only B. both open and closed C. isolated only D. both closed and isolated

1. Find the charge if the number of electrons is 4 x 10-18