Which letter represents the position of the object?

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?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.