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An astronomer on Earth observes a meteoroid in the southern sky approaching Earth at a speed of 0.830c. At the time of its discovery, the meteoroid is 23.0 light-years from Earth. Compute the following.
1) The time required for the meteoroid to reach Earth, as measured with Earth bound astronomer
2) This time as measured with a tourist on the meteoroid
3) The distance to Earth as measured with the tourist
How much time is necessary for the torso to come to rest
A 17.00 kg block is pushed up a frictionless inclined plane that makes an angle of ? = 33 o with the horizontal direction. What force is needed to move the block with constant speed
An AC generator consists of 8 turns of wire in a loop or coil, the cross-sectional area of the loop is A=0.09 m2, with a total resistance of 12Ω. The loop is rotating in a magnetic field B=0.5T at a constant rate of 60Hz.
You go to a gym and lift a 245-kg mass 2.13 m over the ground? You hold it for 10 seconds. How much work you did during the holding period
A cylinder of mass, M1= 6kg and radius R= 4 m is spinning about anaxis through its center at 7 rad/sec. What is the final angular velocity of the combination
a 2 kg block is taken from a furnace where its temperature was 650 degree c and placed on a large block of ice at 0
The angular speed of a car engine is increased at a fix rate from 1500 rev/min to 3600 rev/min in 18 second. Compute how many revolutions does the engine make during this18 sec interval?
A roller coaster car rolls down a frictionless track, reaching a speed V0(Velocity original) at the bottom. by what factor must you increase the height of the track
Determine the enthalpy change and internal energy change of ammonia in J/mole, as it is heated from 350 K to 600 K, using the ideal gas heat capacity given by the Shomate Equation.
An electron is moving through a region of space which possessesa uniform electric field and uniform magnetic field. The electricpoint in the positive x direction and has a magnitude of E = 2,500v/m. The magnetic field is pointing in the positive y..
A two-stage rocket moves in space at a constant velocity of +4260 m/s. The two stages are then separated by a small explosive charge placed between them. Immediately after explosion the velocity of the 1360-kg upper stage is +5970 m/s.
If the lamp's 215 W output is focused on a person's shoulder, over a circular area 25.0 cm in diameter, Find the peak magnetic field strength
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