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1.) The sun radiates energy at a rate of 2.86x10^23 kW. Each fusion reaction in the core of the sun produces 26.73 MeV of energy. Calculate how many helium atoms must be created each second to account for all of the radiated energy.
2.) Assuming that the solar wind travels at 550 km/s and the rotation rate of the sun is 27 days. Calculate the distance from the sun at which an interplanetary magnetic field line will wrap around itself exactly once.
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 very long solid cylinder with radius R has positive chargeuniformly distributed throughout it, with charge per unit volume ? What is the electric field at a point outside the volume in terms of the chargeper unit length ? in the cylinder?
0.17 mol of argon gas is admitted to an evacuated 54.83 cm3 container at 27°C. What is the final volume of the gas
anbsp32.5-kg crate rests on a horizontal floor and anbsp60.4-kg person is standing on the crate. determine the
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg, Find the initial separation between the particles
A cylindrical brass sleeve is to beshrink-fitted over a brass shaft whose diameter is 3.216 cm at 0°C. The diameter of the sleeve is3.205 cm at 0°C. To what temperature must the sleeve beheated before it will slip over the shaft
The drawing shows four point charges. The value of q is3.1 μC, and the distance d is 0.89 m. Find the total potential at the location P. Assume that the potential of a point charge is zero at infinity.
A gasoline engine has a power output of 185kW (about 248hp ). Its thermal efficiency is 28.5%. How much heat is discarded by the engine per second
A 650 kg elevator starts from rest. it moves upward for 3.5s withconstant acceleration until it reaches its cruising speed,1.75m/s . What is the average power of the elevator motorduring this period?
Two point charges 1.9cm apart have an electric potential energy -150?J . The total charge is 30nC
Nichrome is a nickel chromium allot commonly used in heating elements. suppose you have a coil of nichrome wire that is 25.0 m long, what is the resistance of the Nichrome wire
A car is initially 4.0km south of a gas station and is moving with a constant speed of 55km/h due north. How far are the vehicles from the gas station when they pass each other
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