1. Explain what is meant by "field" and compare the properties of gravitational, electric, and magnetic forces in terms of particles affected, factors affecting the magnitude, and their relative strengths.
2. If the force of gravity between a book of mass 0.50 kg and a calculator of 0.100 kg is 1.5 × 10^-10 N, how far apart are they? 

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1 In physics a field is a physical quantity that has a value at every point in space and can influence other objects within that space It is a way of ... View the full answer