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Electronics and inhabitants of the international space station generate a significant amount of thermal energy that the station must get rid of. The only way that the station can exhaust thermal energy is by radiation, which it does using thin, 1.6m by 3.8m panels that have a working temperature of about 6 degrees C.
How much power is radiated from each panel? Assume that the panels are in the shade so that the absorbed radiation will be negligible.
You have a 10.9 m straight wire carrying a 9.89 A current. What is the magnitude of the force on the wire when it is in a 0.83 T magnetic field perpendicular to the wire
A car is traveling north at 17.7m/s. After 12s its velocity is 14.10m/s in the same direction. Find the magnitude and direction of the car's average acceleration.
If the magnetic field strength is 0.845 T, what is magnitude and direction of the magnetic force on the wire between the poles
An object is thrown up in theair straight up and it takes 10 seconds to reach a maximum height. What is the object's initial speed?
Amtrak's 20th-Century Limited is en route from Chicago to New York at 120km/h when the engineer spots a cow on the track. What is the magnitude of the train's acceleration
A small steel sphere of mass 0.40kg is attached by a 5.0m long cord to a swivel pin set into the surface of a frictionless table top. What is the magnitude of the centripetal accerleration of the sphere
An object's temperature increases, and in so doing its radiation power increases by a factor of 2.00.find the ratio of the new temperature to the original temperature
A sample of an ideal gas is at a temperature of 300 K. The rms molecular speed at this temperature is measured as 1368 m/s. Calculate the mass of a molecule of this gas
Light propagating in the glass n1= 1.65 wall of an aquarium tank strikes the interior edge of the wall with incidence angle 19.0 degrees . What is the angle of refraction in the water
A block of mass m = 3.40 kg is pushed a distance d = 2.30 m along a frictionless, Determine the work done by the net force on the block.
A child and sled with a combined mass of 55.20 kg slide down a frictionless hill that is 7.84 m high at an angle of 26o from horizontal. The acceleration of gravity is 9.80 m/s2. If the sled starts from rest, what is its speed at the bottom of hil..
As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 22.0 m/s. find the force he exerts on the ball to give it this upward speed
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