Your family is moving. While lifting a box 1.5m upward to put it on a truck, you exert a force of 200N. How much work do you do?

What is the radius of the circular path ofa charged particle in a magnetic field?

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?