الإجابة الصحيحة هي كرة كتلتها g 200 مربوطة بنهاية خيط طوله m 1 تتحرك حركة دائرية منتظمة في مسار دائري افقي ، اذا كانت الكرة تدور دورتين في الثانية ، فإن مقدار قوة الشد في الخيط بوحدة النيوتن تقريبا
تساوي :
ا
اعتبر النسبة التقريبية تساوي 3.14

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!

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s. when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?

Contains chemical energy. a. heat b. light c. natural gas