What is the approximate radius of a nitrogen nucleus that has seven protons and seven neutrons? a 1.2 × 10–15 m b 2.2 × 10–15 m c 2.7 × 10–15 m?

You carry a 7.0-kg bag of groceries 1.2 m above the ground at constant speed across a 2.7m room. how much work do you do on the bag in the process? (a) 157j (b) 0.00j (c) 185j (d) 82j

If a sphere and a cure have the same mass and are propelled up a ramp with the same force, which would travel father up the ramp? explain.

According to the tide table below what time of day will the highest tide occur?