The electric motor has an input energy of 50,000 joules each second. The motor transfers 35,000 joules of useful energy each second. Calculate the efficiency of the electric motor (show workig out too)

How do the direction of a car's velocity and acceleration compare when the car is slowing down?

What does a condenser in a coal-burning power plant do? a. cools the steam so it can be converted back to liquid water b. heats the water so it can produce steam c. collects the steam and releases it back to the atmosphere

An unknown solid is placed on a triple beam balance and has a mass of 2.5 grams. The solid then displaces 35 ml of water in a graduated cylinder. The substance has a density of 2.5 grams 35 ml

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.3 x 10^5 N. In being launched from rest it moves a distance of 87 m and has a kinetic energy of 4.

Create a punnet square for a heterozygous black rabbit crossed with a homozygous white rabbit

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble. Which statement best describes what Kendall can do? A.

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.

If a car rolls gently off a vertical cliff, how long does it take to reach 90km/hr.

In the game of volleyball, what skill relates to Newton's second law

The minimum breaking distance d in feet for a typical vehicle can be modeled with the equation d (v) = 0.045v2, where v is the vehicle's speed in miles per hour.