A particle moves along the x-axis so that at time t > (or equal to) 0 its position is given by x (t) = 2t^3 - 21t^2 + 72t-53. At what time t is the particle at rest? ... ?

Watery clay soil slides down a mountain is an example of what

A ray of red light traveling through air strikes a block of quartz at an angle of incidence of 40°. If that light travels through the quartz and then enters a large crystal of sodium chloride (salt), what is the angle of refraction of the light in

What is static and sliding friction

A radioactive decay or nuclear reaction that results in a nuclei with greater than or fewer protons that the initial nuclei is called transmutation

What happens with alpha, beta, and gamma radiation?

An object has a kinetic energy of 233 J and a momentum of magnitude 20.4 kg·m/s. Find the speed and the mass of the object.

What is the average velocity of atoms in 1.00 mol of neon (a monatomic gas) at 465 K? For m, use 0.0202 kg.

What type of visible light spectrum does the sun produce?

In order for a current to be maintained through a conductor a difference in must be maintained from one end of the conductor to the other end. potential power resistance conductivity

A rocket initially at rest acceleration at a rate of 99.0meter/second^2. Calculate the distance covered by the rocket if it attains a final velocity of 445 meters/seconds after 4.50 seconds.