Physics, 19.03.2021 14:00 shelbyp2003

PLEASE HELP ME WITH THOSE 3 QUESTIONS 1) A motor outputs 1000 J of energy in a given amount of time. 100 J is used to turn a rotor. How much heat energy is gained by the air around the engine?

2) A virtual image is 3 meters behind a flat mirror and it is 2 meters tall. What is the height and distance from the mirror, for the object?

3) A concave mirror has a focal length of 1 meter. An object is 2 meters from the mirror. What is the image distance from the mirror?

Answers: 2

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 17:40, duncanje5783

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Answers: 2

continue

Physics, 22.06.2019 10:00, yasminlockser6

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Answers: 2

continue

Physics, 22.06.2019 11:30, jessecabrown1

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Answers: 1

continue

Physics, 22.06.2019 19:00, ramjand7853

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

Answers: 2

continue

You know the right answer?

PLEASE HELP ME WITH THOSE 3 QUESTIONS 1) A motor outputs 1000 J of energy in a given amount of time...