Rajah 2 menunjukkan dua tin yang sama digantung dari sebatang rod kayu yang mengufuk dengan tali yang sama panjang. Satu tin diisi dengan pasir manakala satu tin kosong. Jika kedua-dua tin ditolak dengan daya yang sama, tin manakah yang akan terus berayun untuk tempoh yang lebih lama ?​

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.