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Due to a temperature difference ?T, heat is conducted through a brass plate that is 0.027 m thick. The plate is then replaced by a stainless steel plate that has the same temperature difference and cross-sectional area. How thick should the steel plate be so that the same amount of heat per second is conducted through it?
An electron moves into a uniform magnetic field B = 0.182mT with initial speed with v = 12000m/s, What is the radius of the helical motion
A deuteron (the nucleus of an isotope of hydrogen) has a mass of 3.34×10?27kg and a charge of 1.60×10?19C, Find the speed of the deuteron
The sound intensity in front of a loudspeaker diaphragm vibrating at 2kHz is 4.3 W/m^2, with an acoustic power output of 0.3W. Calculate the diameter of the diaphragm. in cm
A very fast-moving train car passes you, moving to the right at 0.50c. You measure its length to be 12m. How long does David measure the train car to be
Hooke's law describes a certain light spring of unstretched length 33.0 cm. When one end is attached to the top of a doorframe and a 7.31 kg object is hung from the other end, the length of the spring is 42.0 cm.
A 23 bullet traveling 245 penetrates a 3.0 block of wood and emerges cleanly at 195 .If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.60 m/s at an angle of 25.0° below the horizontal. Find the height from which the ball was thrown
a metal hump is placed on the surface of the infinitely large conducting plate as shown on the picture. the hump has a
A storage tank at STP contains 18.5kg of butane gas, C4H10, Determine the number of moles of butane gas
If the flywheel on my truck has a mass of 22.8Kg a radius of .4572 meters and is rotating at 250 revolutions per minute
A 1000kg car moving 40m/s skids to a stop. During the skid, the only force is the frictional force between the tires and the road, What is the initial kinetic energy of the car
Suppose atmospheric pressure at Denver is 1.0135 × 105 N/m2 today. How high will the water column stand on the barometer tube
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