سلك طوله 2 متر و معامل مرونته 2×10¹¹ نيوتن/م² وجد أن 4×10⁸ ، احسب اكبر استطالة في طول السلك دون أن يفقد مرونته؟

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

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!