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The magnetic field 2 cm away from a long straight wire is 60 microteslas. What is the current in the wire (in amps)?
A fireman, 48.1 m away from a burning building, directs a stream jet of water from a ground level fire hose at an angle of 36.1 degrees above the horizontal. At what height will the stream of water strike the building
A truck of mass 28500 kg is located 26 m from the left end. What is the force on the bridge at the left point of support? The acceleration of gravity is 9.8 m/s2. Answer in units of N.
If the average frequency emitted by a 200,-, rm W light bulb is 5.00 times 10^ {14}, {rm Hz}, and 10.0 percent of the input power is emitted as visible light, about how many visible-light photons are emitted per second.
The coefficients of static and kinetic friction between a 524crate and the warehouse floor are 0.665 and 0.320, respectively. find the acceleration of the crate after it has begun to move
Often times during volcano eruptions the clouds have large static charge buildups that cause lightning to happen. What is the electric field at the ejected rock
An iron ball hangs from a 21.5-m steel cable and is used in the demolition of a building at a location where the acceleration due to gravity is 9.78 m/s2. find the maximum speed of the ball during its swing
A step-up transformer is designed to have an output voltage of 2200V (rms) when the primary is connected across a 208 V (rms) source. If there are 76 turns on the primary winding, how many turns are necessary on the secondary?
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. how much kinetic energy did each piece acquire
Jupiter emits radio waves and also visible light (reflected Sunlight). Which of the following statements about the light we detect from Jupiter is true.
a bomber on a bomb run is traveling at a horizontal velocity of 152 meters per second and flying at an altitude of 1500
Two unequal masses are hung from the ends of a rope that runs over a pulley. What is the acceleration of the smaller mass
A heat pump keeps a house warm at 72.0 degrees Fahrenheit when the outside temperature is 0 degrees Fahrenheit. How much heat is drawn in from the outside
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