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Consider a star that,m according to earth observers, is 50 light years from the earth. A ship is sent from the earth, toward the star, at a speed of 0.999 c.
A) How much do people on earth age during the trip to the star?
B) How much do people on the ship age during the trip to the star?
C) What do observers on the ship measure for the earth-to-star distance?
A space traveler weighs 550 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
A body of mass 6 kg is acted upon by a force which causes a displacement in it given by x = t2/4 metre where t is the time in seconds
In the rainy season, the amazon flows fast and runs deep. In one location, the river is 23m deep and moves at a speed of 4.0m/s toward the east. what is the potential (magnitude and sign) at the surface
A 20,000 ohm resistor and a capacitor are connected in series and then a 15v potential differnce is suddenly applied across them. what is the capacitive value of the capacitor
An electron with velocity v = (300, 200, 0) m/s moves in a region where the magnetic feild is B = (0, 1.2, 2.8) x 10^-4 T. Determine the force on the electron
A 135 mCi radioactive tracer is made in a nuclear reactor. When it is delivered to a hospital 18 hours later its activity is 85 mCi. The lowest usable level of activity is 10 mCi. What is the tracer's half-life
Find the moment of inertia of a uniform plate shaped like a quarter of a circle of radius R, made to rotate around the square corner (with the rotation axis perpendicular to the plate)
A carnival merry-go-round has a large disk-shaped platform of mass 120 kg that can rotate about a center axle. a 60 kg student stands at rest at the edge of the platform 4.0 m from its center. The platform is also at rest. Decide the rotational veloc..
question when a 2.50 kg object is hung vertically on a certain light spring described by hookes law the spring
A 220, 45.0-cm-diameter turntable rotates on frictionless bearings at 55. A 21.0 block sits at the center of the turntable. A compressed spring shoots block radically outward along a frictionless groove in the surface of the turntable.
A 900kg car pushes a 2000kg truck that has a dead battery. When the driver steA 900kg car pushes a 2000kg truck that has a dead battery, What is the magnitude of the force of the car on the truck
Charge Q=+ 6.00 µC is distributed uniformly over the volume of an insulating sphere that has radius R = 4.00 cm. What is the potential difference between the center of the sphere and the surface of the sphere
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