Solar energy isn't usually used as the only power source for a reason because what

Given that the speed of sound in air is 330m/s, calculate the frequency of a note which setup a wavelength of 5cm in air. Is this frequency within the limits of audibility of the human ear?

If a stone with an original volcity of 0 is falling from the ledge and takes 8 seconds to hit the ground what is the final volcity of the stone

A 1240-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 31.8 m?

A table of mass 10 kg is lifted so that the gravitational potential energy of the table increases by 1470 J. How high is the table lifted? Acceleration due to gravity is g = 9.8 m/s2.

The momentum of a car is 13,300 kgm/s. If it has a speed of 14 m/s, what is the mass of the car?

A proton in a particle accelerator is traveling at a speed of 0.99c. (a) If you use the approximate nonrelativistic equation for the magnitude of momentum of the proton, what answer do you get?

An object of mass 3 kg, moving with and sticks to an object of mass 2.00 kg with an initial velocity of 3.00 m/s. Find the final velocity of the composite object.

What is the mathematical relationship between frequency wavelength and wave speed?

What is the basic unit of each type of elements

White light is composed of all the colors of the visible light spectrum. The spectrum is usually said to consist of A) red, blue and green B) red, yellow, blue and green C) red, orange yellow, green, and blue D) red, orange yellow, green, blue, and