What is the velocity of a 200-kg cannon ball that travels to the right with a momentum of +25,000 kg*m/s?
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How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

How does an observation about an object differ from an inference about that object

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)