The pony express was a popular method of moving the mail quickly in the mid-1800s. suppose a pony's momentum is calculated to be
the mass of the pony is 450 kg. what is the magnitude of the pony's velocity?
a) 16 km/hr
b) 320 km/hr
c) 630 km/hr
d) 160 km/hr

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

How can you increase the strength of an electromagnet?

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material