A gun of mass 500g fires a bullet of mass 10 g with a speed of 100m/s. Find;
i. initial momentum of 'gun + bullet'
ii. Momentum gained by the bullet after firing
iii. Recoil velocity of the gun

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack

The dot diagram represents the motion of the motorcycle as it moves from left to right

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j