Telephone signals are often transmitted over long distances by microwaves. what is the frequency of microwave radiation with a wavelength of 3.5 cm?

What is the source of all magnetism? Gravitational waves Sound waves The core of the Earth Electric current

A ball is tossed upward. Which of the following statements correctly describes the energy transformation as it rises? A) Group of answer choices Both the gravitational potential energy and the total energy increase. B) The total energy increases.

A 43 kg girl and a 7.1 kg sled are on the frictionless ice of a frozen lake, 12 m apart but connected by a rope of negligible mass. The girl exerts a horizontal 6.6 N force on the rope.

in a hydraulic press the small cylinder has a diameter 10.0cm while the large has 25cm if the force of 600N is applied to the small cylinder. find the force exacted on the large cylinder

The principle of quantum mechanics that states that orbitals of equal energy are each occupied by a single electron before any orbital is occupied by a second electron is known as the

A car is moving with a speed of 22 m/s. The driver then brakes, and the car comes to a halt after 6.5 s. What is the distance covered by the car after the driver brakes, until it comes to a stop? A) 36 m B) 72 m C) 140 m D) 210 m

Which of the following best explains why an explosive charge in a cannon can cause a cannonball to fly out of the cannon with a high velocity? A. because chemical potential energy can convert to gravitational potential energy B.

Distance divided by time what is velocity

The decay constant of a radioactive nuclide is 4.6 x 10^-3 s^-1. What is the half-life of the nuclide? 2.5 min 2.0 min 1.4 min 3.6 min 3.1 min

A furlong is an old british unit of length equal to 0.125 mi, derived from the length of a furrow in an acre of ploughed land. a fortnight is a unit of time corresponding to two weeks, or 14 days and nights.