Physics, 26.11.2019 21:31, frisha

The universe is filled with photons left over from the big bang that today have an average energy of about 4.9 ✕10-4 (corresponding to a temperature of 2.7 k).

what is the number of available energy states per unit volume for these photons in an interval of 4 ✕10-5ev?

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 04:00, jaejaeJae9534

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Answers: 1

continue

Physics, 22.06.2019 06:10, lbelle

Which transition by an electron will release the greatest amount of energy? oa ob oc od

Answers: 2

continue

Physics, 22.06.2019 08:30, bollipard1183

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

Answers: 1

continue

Physics, 22.06.2019 10:40, rainbowboi

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.

Answers: 1

continue

Do you know the correct answer?

The universe is filled with photons left over from the big bang that today have an average energy of...