What is the speed of gravity

A roller coaster car travels through a loop in 3.1 s with a centripetal acceleration of 26 m/s2. What is the radius of the roller coaster loop?

A closed system consisting of 4 lb of gas undergoes a process in which the relation between pressure and volume is pVn = constant. The process begins with p1 = 15 psi, v1 = 1.25 ft3/lb and ends with p2 = 53 psi and v2 = 0.5 ft3/lb.

Why can we see the entire side of the moon during a full moon?

xamine Conceptual Example 3 before addressing this question. A wave moves on a string with a constant velocity. Does this mean that the particles of the string always have zero acceleration?

A 6.0 * 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 19.3 ◦ with the horizontal. An average frictional force of 4.4*103 N impedes the car's motion so that the car's speed at the bottom of the driveway is 4.

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction

Where would aliens be if they really do exist here on Earth?

If the mass of an object is 84g and the volume is 12cm3 what is the density

Describe one example of competiton of tropical dry forest