A jet has amass of 40,000 kg. The thrust for each of the four engines is 20,000 N. What is the jet's acceleration?

When you are sitting a few feet from a fire, your skin feels warm. what forms of heat transfer are acting to transfer heat from the fire to your skin?

Technician A says that current is created in the stator windings of an alternator. Technician B says that the voltage regulator controls the current flow through the rotor. Who is right

The Wizard of Oz is trying to make a quick escape in his hot air balloon. If the net force on the balloon remains constant, what happens as he throws sand bags out of the balloon's basket? A. The mass of the balloon increases. B.

Two 6.5 g spheres are charged equally and placed 3 cm apart. When released, they begin to accelerate at 100 m/s^2. What is the magnitude of the charge (in Coloumbs) on each sphere? (Enter scientific notation in calculator format. i. e.

How do scientists look for black holes in the sky

The water level in identical bowls, A and B, is exactly the same. A contains only water; B contains floating ice as well as water. When we weigh the bowls, we find that Group of answer choices

A man pushes down on a lever with 45 N and the lever moves 1.5 meters. The other end of the lever lifts a 87.6 N box. 4 meters. What is the efficiency of the lever?

The shape of an electron cloud is determined by the electrons. True or False

Describe how the motion of a planet (like Mars) among the stars of the zodiac on the sky is qualitatively different from the motion of an object like our Sun among the stars of the zodiac.

A railroad car of 2000 kg coasting at 3.0 m/s overtakes and locks with an identical car coasting on the same track in the same direction at 2.0 m/s. What is the speed of the cars after they lock together?