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A 1.4-µC point charge is placed between the plates of a parallel plate capacitor. The charge experiences aforce of 0.44 N. What is the magnitude σ of the charge density on either plate of the capacitor?
The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981. Assume the initial launch angle was 45° and neglect air resistance. (a) Determine the initial speed of the projec..
Some particle of mass m is constrained to move on the surface of a vertical cylinder defined by 2 2 2 x ? y ? R , where R is the radius of the cylinder. The particle is subject to a force directed towards the origin and proportional to the distanc..
A plank 2.00 cm thick and 12.4 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m, find the shear modulus of the wood
Consider a mass spectrometer used to separate the two isotopes of uranium, 238U3+ and 235U3+. Assume the ions enter the magneticfield region with a speed of 7.10*105 m/s. What value of B isrequired to give a separation of 1.2mm when the ions leave th..
A 125 kg flatbottomed boat is floating along at 5.0 m/s, headed east. Sally Sue, standing at one end of the boat, starts to walk at 2.0 m/s, what is the speed of the boat as she walks along
A roller coaster car rolls down a frictionless track, reaching a speed V0(Velocity original) at the bottom. by what factor must you increase the height of the track
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 56.03 diopters, and the lens-to-retina distance is 1.827 cm. How far is the blackboard from her eyes
the speed of a transverse wave on a string is 420 ms and the wavelength is 0.12 m. the amplitude of the wave is 2 mm.
The leader of a bicycle race is traveling with a constant velocity of +11.2 m/s and is 10.4 m ahead of the second-place cyclist. The second-place cyclist has a velocity of +9.50 m/s and an acceleration of +1.20 m/s2. How much time elapses before h..
The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. What is the diffraction angle of the sound under each of the following situations
A heat engine working between 170.0oC and 400.0oC, takes in 1.639×107 J of heat and delivers 4.200×106 J of work per cycle. What is the maximum possible efficiency of an engine working between these two temperatures
A boy scout starts a fire by using a lensfrom his eyeglasses to focus sunlight on kindling 5.6 cm from the lens. What is the magnification when the eye is relaxed
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