In the hydrogen atom, the energy spacing between the is 4.07 x 101 j (joules). when an is the frequency of the photons emitted? electron falls from the fourth to the second orbital, what from the a. 3.04 x 10 hz (or cycles per second) b. 608 x 1014 ã c. 3.04 x 1015 hz d. 4.00 x 10'"hz e. 4.00 x 10 hz

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?