A transformer is to be used to step down voltage from an alternating current source from 220V to 110V. If the primary has 120 turns, then the number of turns in the secondary is.

Which statement is true of the electromagnetic spectrum? The higher the radiant energy, the higher the frequency and the longer the wavelength. The lower the radiant energy, the lower the frequency and the longer the wavelength.

A student waiting at a stoplight notices that her turn signal, which has a period of 0.80 s, makes one blink exactly in sync with the turn signal of the car in front of her.

What is quantity? explain.

Two trains are moving at 30 m/s in opposite directions on the same track. The engineers see simultaneously that they are on a collision course and apply the brakes when they are 1000 m apart.

When the shadow of the moon appears on earths surface what is occuring?

How to reverse the heating effects of electric curent

To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. in one such episode, a 600 g falcon flying at 20.0 m/s ran into a 1.50 kg raven flying at 9.00 m/s.

Four springs are stretched to the same distance from the equilibrium position. The spring constants are listed in the table. A 2 column table with 4 rows. The first column is labeled spring with entries W, X, Y, Z.

Which type of light travels at the fastest speed? a. none of these b. ultraviolet light c. infrared light d. visible light

How far does a car go in 30 seconds at a speed of 29 m/s?