Physics, 16.07.2019 23:10, jessicamcummins

What is the efficiency of an engine that does 288 j of work and exhausts 72 j of heat while taking in 360 j of heat? a. 25% b. 20% c. 10% d. 80% !

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 23:00, ImBADatmath8743

Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm

Answers: 2

continue

Physics, 22.06.2019 06:30, 1234fatimasm

What are similarities and differences between refraction, reflection, diffraction and absorption?

Answers: 3

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 20:10, hncriciacheichi

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

Answers: 1

continue

Do you know the correct answer?

What is the efficiency of an engine that does 288 j of work and exhausts 72 j of heat while taking i...