A ball that has a mass of 0.25 kg spins in a circle at the end of a 1.6 m rope the ball moves at a tangential speed of 12.2 m/s

what is the centripetal force acting on the ball

A. 1.9N

B 23N

C 59N

D 93N

Bohr's model is sometimes called the what model bc it resembles a mini-solor system a. atomic b. nuclear c. universal d. planetary

By applying a 12-newton horizontal force, a 7-kilogram block is moved 12 meters in 3 seconds on a frictionless, horizontal surface. How much power was used in moving the block. A) 144 watts B) 112 watts C) 16 watts D) 48 watts

The value of g is maximum at poles and minimum at equator why

How is a phase diagram for water different?

The period T of a simple pendulum is the amount of time required for it to undergo one complete oscillation. If the length of the pendulum is L and the acceleration of gravity is g , then T is given by T = 2 π L p g q .

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A person lifts a 4.5 kg cement block a vertical distance of 1.2 m and then carries the block horizontal - ly a distance of 7.3 m. determine the work done by the person and by the force of gravity in this process.

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.

A 5.1 kg black bear cub weighs 49.98 N. The cub is carried by its mother up into the safety of a white pine tree.

Which location is associated with persistent upwelling of cold water to the ocean surface?