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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 uniform line charge of linear charge densitylambda=3.6nC/m extends fromx= 0 tox= 5 m What is the total charge?
Two long parallel wires each carry 2.3A in the same direction, with their centers 1.5cm apart. Find the magnitude of the force of interaction
question a. a 2300-kg satellite is orbiting the earth at an altitude equal to twice the earths radius.i find the
One of the mirrors of a Michelson interferometer is moved, and 1000 fringe pairs shift past the hairline in a viewing telescope during the process. haw far was the mirror moved
A block of mass 250.0 g is at rest on a plane inclined at 30.0 degrees to the horizontal. Find the speed of the second block when it has fallen 35.0 cm
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 , length 91.1 and diameter 2.45 from a storage room to a machinist. Calculate the weight of the rod, . The acceleration due to gravity, = 9.81 .
Two uniform spheres of mass 75 kg are fixed at 14 cm( along the y-axis) and 20 cm (along the x-axis). What is the initial acceleration of a uniform sphere of mass 5 kg if released from rest at the origin?
A heart defibrillator passes 11.0 A through a patient's torso for 5.00 ms in an attempt to restore normal beating, What was the path's resistance?
A 65 kg man in a 5.9 kg chair tilts back so that all his weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area of radius 0.9 cm.
M1 is five times more massive than M2. One force acts on the hanging mass, but the net force acts on both masses. Once you have the acceleration, you can compute the distance.
An electric field E with an average magnitude of about 150 N/C points downward in the atmosphere near Earth's surface. What charge (both sign and magnitude) must be used
Most of us know intuitively that ina head-on collision between a large dump truck and a subcompactcar, you are better off being in the truck than in the car. What average force does the seatbelt exert on the car driver
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