The propeller of an airplane is 9 feet in diameter. What is the speed of the tip of a propeller blade if the angular velocity of the propeller is 50 radians per second?

What current risks are there to Earth from NEOs?

A piece of iron block moves across a rough horizontal surface before coming to rest. The mass of the block is 1.3 kg, and its initial speed is 4.0 m/s.

1. In which situation does the motion of an animal show that net force is acting on that animal? A) An eagle remains flying at a constant velocity B) A running tiger increases its speed from 4 m/s to 6 m/s C) A sparrow remains stationary perched on

A man has a weight of 100 Newtons. How much work is done if he climbs 4meters up a ladder?

what is the mass of an object that creates 33750 J of energy by traveling at 30 m/s

A person walks up a stalled escalator in 25 s. When standing on the same escalator, now moving, she is carried up in 16 s. How much time in seconds would it take her to walk up the moving escalator?

Is the following sentence true or false? Two atoms of the same element can have different numbers of protons.

Definition of mechanical weathering

If you double the force of an object what happens to the acceleration?

A particle (mass - 5 g. charge 30 mC) moves in a region of space where the electric field is uniform and is given by Ex 4.8 N/C, Ey-E. 0. If the velocity of the particle att-O is given by v,-40 m/s V, v-0, what is the speed of the particle at t3 s?