During beta decay, what happens to the nucleus of the unstable atom? Gains a proton and loses a neutron.

Gives up two protons and two neutrons.

Loses a proton and gains a neutron.

Maintains the same number of protons and neutrons.

Identify the type of synthetic material used in each object

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?