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A space craft with a mass equal to .25 x Mmoon is in orbit about the sun with a period of 3 years.
1) Calculate the average radius of the space craft's orbit. (The distance from the space craft to the sun.)
2) If this craft approached the earth so that it was one Earth radius from the surface of the earth, what force would the space craft exert on you if your mass is 80 kg? What force would the space craft exert on the Earth?
A wire with initial length L0 and radius r0 has measured resistance of 1.0 ohms. The wire is drawn under tensile stress to a new uniform radius of 0.25 r0. What is the new resistance of the wire
A bird stands on a dc electric transmission line carrying 3200A. What is the potential difference between the bird's feet
An ideal transformer has 50 turns in its primary and 200 turns in its secondary. 7.0- ac is connected to the primary. What is the power supplied to the primary
A 5.9-kg rock and a 6.6 × 10-4-kg pebble are held near the surface of the earth. Determine the magnitude of the gravitational force exerted on each by the earth
A flat slab of styrofoam, with a density of 32 kg/m^3, floats on a lake. What minimum volume must the slab have so that a 34kg boy can sit on the slab without it sinking
An L-R-C series circuit, R=150 ohms, L= 0.750H, and C= 1.70x10^-2uF. The source has a voltage amplitude of 140V, What is the average power delivered by the source
A proton is released from rest at the positive plate of a parallel-plate capacitor. What will be the final speed of an electron released from rest at the negative plate
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 billiard ball (the 8-ball) rests directly in front of the side pocket. Pool-hand Peta calls the shot into the side pocket to the right and shoots it in. Find the angle between that velocity vector and the right
A certain bivalent metal has a density of 6.458 g/cm3 and a molar mass of 92.8 g/mol. Calculate the number density of conduction electrons
question1the unique temperature of the water in the large bowl was 25degc. the temperature of a molecule that changes
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.02 mT. obtain the radius of the circular path
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