A ball is thrown at a height of 1.2m above the ground with an initial speed of 20 m/s at an angle 60 degrees above the horizontal. find a vector valued function r (t) describing the position of the ball

How is the musician shown changing the instrument to play different musical notes? A.) changing the velocity of the sound wave B.) changing the resonant frequency of the standing wave C.) changing the amplitude of the sound wave D.

A disc-shaped grindstone with mass 50 kg and diameter 0.52m rotates on frictionless bearings at 850 rev/min. An ax is pushed against the rim (to sharpen it) with a normal force of 160 N. The grindstone subsequently comes to rest in 7.5 seconds.

The coefficient of kinetic friction between Gary's shoes and the wet kitchen floor is 0.28. If Gary has a mass of 52 kg, what is the force of kinetic friction acting on him as he slides across the floor?

How can you use Newton's second law to find force

A student wants to demonstrate entropy using the songs on her portable music player. What should she do to demonstrate the lowest entropy?

The kinetic energy of an object depends on both the objects mass and velocity. a. True b. False

How does a walkie-talkie work and why do people still use them?

A 125-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope.

Jose wandered 4 kilometers at 2 kilometers per hour. How long did Jose wander?

What is the acceleration of a 10kg pushed by a 5n force