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In compressing the spring in a toy dart gun , 0.5 J of work isdone. When the gun is fired, the spring gives its potential energyto a dart with mass of .02 kg.
(a) What is the dart's kinetic energy as it leaves the gun?
(b) What is the dart's speed?
You are designing a digital camera, and want each detector element to have a width equal to the distance between the first zeros of the first zeros of the diffraction-limited point spread function
A softball of mass 0.200kg that is moving with a speed of 7.0m/s collides head-on and elastically with another ball initially at rest, Calculate the mass of the target ball
The brick wall of a building has dimensions of by and is thick. How much heat ?ows through the wall a period when the average inside and outside temperatures are, in that order.
a stationary orbit is done with a period equal to the time it takes the planet to revolve one time so that the satellite appears to remain at the same point in the sky all the time. Find the radius of a stationary orbit
An expensive grand piano has been pushed to the top of the ramp 1.77 m high inclined at 28.90 degrees at the back of a moving van. How long will it take the piano to reach the bottom of the ramp
Two vehicles approach a right angle intersection and then collide. After the collision, they become entangled. If their mass ratios were 1:3 and their respective speeds as they approached were both 13 m/s, find the magnitude and direction of the fina..
A fighter plane flying at constant speed 510 m/s and constant altitude 7400 m makes a turn of curvature radius 5300 m. What is his/her apparent weight during the plane's turn
The gap between electrodes in a spark plug is 0.06 cm. In order to produce an electric spark in a gasoline air mixture, What minimum voltage must be supplied by the ignition circuit
What is magnitude of induced emf between the ends of beam
The aurora is caused when electrons and protons, moving in the earth's magnetic field of ?5×10?5 T, collide with molecules of the atmosphere, find Radius of the electron and proton in m
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. But she does have devices to measure distance and time accurately. What is the mass of this canister
Using the periodic boundary condition, ?k(x+L) = ?k(x) and noting that e(i2pn)=1, determine the allowed values of k in terms of L and an integer n. Are negative values of n allowed?
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