Hai chất điểm chuyển động đều, cùng vận tốc dài trên hai đường tròn có bán kính R1=2R2 Tỷ số gia tốc pháp tuyến của chúng a1/a2 bằng

Which sound characteristic is not affected by the relative motion of an object

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.