Derive a relation between velocity, frequency and wavelength of a wave. Write a formula relating velocity of a wave to its time period and wavelength.

A particle moves along the x axis. Its position as function of time is given by x=6.8t+8.5t^2, where t is in seconds and x is in meters. What is the acceleration as a function of time?

In a Hall-effect experiment, a current of 3A sent lengthwise through a conductor of 1 cm wide, 4 cm long, and 10 μm thick, produces a transverse (across the width) Hall potential difference of 10 μV when a magnetic field of 1.

1. A heat lamp is designed to keep food and other things warm. Would it also make a good tanning lamp? Why or why not? 2. The wavelength of an electromagnetic wave is measured to be 0.250 m.

If a ball is thrown vertically upward from the roof of "64 foot building" with a velocity of 80 ft/sec, its height after tt seconds is s (t) = 64+80t-16t^2. what is the maximum height the ball reaches

Two wooden boxes of equal mass but different density are held beneath the surface of a large container of water. Box A has a smaller average density than box B. When the boxes are released, they accelerate upward to the surface.

A child pulls a wagon 3.0 m using a force of 55 N at an angle 35° above horizontal. The force of friction on the wagon is 12 N. Calculate the net work done on the wagon

Which of these accurately describes a chemical reaction A. products and reactants combine to form new reactants. B. Reactants combine to form products C. Products and reactants combine to form new substances D. Products combine to form reactants

Why construction is present near the bulb

Water, with a density of rho = 1125 kg/m 3 rho=1125 kg/m3, flows in a horizontal pipe. In one segment of the pipe, the flow speed is v 1 = 6.53 m/s v1=6.53 m/s. In a second segment, the flow speed is v 2 = 1.17 m/s v2=1.17 m/s.

If you are standing on a weighing scale in an elevator what happens to your weight if the elevator accelerates up or accelerates down? Are you going to weigh less, weigh more or the same?