A(n) 0.2 kg object is swung in a vertical circular path on a string 0.1 m long. the acceleration of gravity is 9.8 m/s2 . if a constant speed of 6.38 m/s is maintained, what is the tension in the string when the object is at the top of the circle.

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.

Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l

Current from a charged capacitor lights a bulb. as time goes on the brightness of the