When light of frequency 5.4 × 1014 Hz is shone on a metal surface the maximum energy of the electrons emitted is 1.2 × 10-19 J. If the same surface is illuminated with light of frequency 6.6 × 1014 Hz the maximum energy of the electrons emitted is 2.0 × 10-19 J. Use this information to calculate a value for h Plank’s constant?

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

What determines the amount of inertia an object has

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 equation 2: 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!