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The secondary voltage of an ignition trans- former in a furnace is 14 kV. When the primary operates at an rms voltage of 103 V, the primary impedance is 25 and the transformer is 90 percent efficient. What is the impedance in the sencondary?
A flat cylindrical grinding wheel is spinning at 2000 rpm (clockwise when viewed head-on) when its power is suddenly turned off. Normally, How much work was done by friction on the system
A projectile is fired with an initial speed of 65.2 m/s at an angle of 34.5 degrees above the horizontal on a long flat firing range. determine the maximum height reached by the projectile
The mass of a space shuttle is approximately 2.0x10^6 kg. Throughout lift-off, the net force on the shuttle is 1.0x10^7 newtons directed upward. What is the speed of the shuttle 10 seconds after liftoff.
A ball is released from the top of a cliff; it hits the ground 1.1 seconds later. how many meters is the cliff above the ground below
A 1460-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16300 N on the submarine, as well as a downward resistive force of 1090 N. What is the submarine's acceleration?
An automobile with a mass of 2250 slugs is driven around a circular curve, What is the centripetal force on the car
Kim has a metal casting company which makes commemorative coins. She has 0.12 cubic meters of silver which she needs to make into 1.07E5 coins of thickness 2 mm. If she uses all of the silver, what is the diameter in centimeters of each coin.
A 2.90 m long, 320 kg steel beam extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 66 kg construction worker stands at the far end of the beam.
The 14C atom undergoes an explosion and decays into a nucleus, an electron, and a neutrino. From this determine the speed of the recoiling nucleus
An electron moves at a speed of 480m/s perpendicular to the direction of the uniform magnetic field of 1 T. What is the radius of the electron's circular orbit in units of nanometers (1 m = 109 nm)
A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together. What is the speed of the wreckage just after the collision
While on a camping trip, you would like to carry water from the lake to your campsite. You have two non-identical buckets which you attach to a 1.35 m long rod. Which bucket holds more water
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