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A rocket is fired straight up through the atmosphere from the South Pole, burning out at an altitude of 250 kilometer when traveling at 6.0km/s. Calculate maximum distance from Earth surface does it travel before falling back to Earth?
A rower can row at 3.77 m/s in still water. He wants to row directly across a river 252 wide with a constant current of 1.33 m/s. calculate how long will it take him to cross the river
Satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 3.70 104 s. What is the speed at which satellite travels.
If a steel ball with half the mass of the steel ball you used in class was used, what would its initial horizontal velocity be
A battery with an emf of 12.00 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 11.70 V, What is the energy dissipated in the battery's internal resistance in 4.20 minutes
A polonium nucleus, while at rest, decays into a lead nucleus of rest mass 342.1126 x 10^-27 kg, and emits a helium nucleus of rest mass 6.6483 x 10^-27 kg. Determine the rest mass of the Polonium nucleus
consider a thin wire bent into the shape of a ring of radius of 10 cm that carries a steady 2.0-A current
A 0.10-kg object with a velocity of 0.20 m/s in the +x direction makes a head-on elastic collision with a 0.15 kg object initially at rest
two point charges -2q and 3q are on the x-axis -2q at the origin and 3q at x d. choose the potential to equal zero at
A toy cannon uses a spring to project a 5.31-g soft rubber ball. The spring is originally compressed by 5.04 cm and has a force constant of 7.96 N/m. At what point does the ball have maximum speed
calculate the heat needed at 0 degrees celcius to make the following change of state kilocalories to melt 140 g of
A solid sphere of radius R carries a volume charge density ?=?0e^r/R, Find an expression for the electric field strength at the sphere's surface
A 690-W space heater is designed for operation in Germany, wherehousehold electric outlets supply 230 V (rms) service. What is thepower output of the heater when plugged into a 120-V (rms) outletin a house in the United States? Ignore the effects of ..
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