A certain wave motion has a frequency of 10 cycles / s and a wavelength of 3 m. so its propagation speed is

Select the correct answer from each drop-down menu. A baking tray is made of metal because it's of heat. An oven mitt is used to take the tray out of the oven because it's.

An electric iron operates on a 120-volt outlet and uses 2.30 amps of current. How much power does the iron use? A. 0.019 watts B. 276 watts C. 52 watts D. 630 watts

reasons why using mirrors to generate electricity is not a common practice.

A T-bar tow is required to pull 85 skiers up a 600 m slope inclined at 15° above horizontal at a speed of 2.5 m/s. The coefficient of kinetic friction is 0.06. Find the motor power required if the mass of the average skier is 60 kg.

Of the following reactions, which is a fusion reaction? a. uranium-235 absorbing a neutron and splitting into xenon-140, strontium-94, and two neutrons b. hydrochloric acid combining with sodium hydroxide to form a salt and water c.

Sound waves can combine to become bigger or smaller true or false

Archimedes supposedly was asked to determine whether a crown made for the king consisted of pure gold (density of gold is 19.3 * 103 kg/m3). According to legend, he solved this problem by weighing the crown first in air and then in water.

What are at least three types of energy involving a microwave

1. At one time, people thought that heat was a substance called

How are magnet'so magnetic force and magnetic field different