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Two equally charged insulating balls each weigh 0.22 g and hang from a common point with identical threads 25 cm long. The balls repel each other so that the separation among their centers is 6.0 cm. What is the magnitude of the charge on each ball?
You are given a pair of Hemholtz coils, each with radius R = 12 cm, containing 140 turns of wire in each coil. Calculate the magnetic field produced in the center of the space between the coils
A 380-N, uniform, 1.50 m bar is suspended horizontally by two vertical cables at each end. A small object of weight 520 N is placed distance 0.5 m from the cable A. What is the tension in cable A.
A diffraction grating is made up of slits of width = 300 nm with separation = 1150 nm. The grating is illuminated by monchromatic plane waves of wavelength ? = 560 nm at normal incidence. How many maxima are there in the full diffraction pattern? Wha..
A car of mass m = 1365 kg is pushed off a cliff of height h = 29 m. what was the kinetic energy of the car the instant after it left the cliff
Two UFOs collide over Roswell, New Mexico. Before the collision, UFO A (mass 10,000.00kg) has a velocity of +100.00m/s, What is the linear momentum vector of UFO A before the collision
a uniform 5.93 m long horizontal beam that weighs 468N is attachedto a wall by a pin connection that allows the beam to rotate. itsfar end is supported by a cable that makes an angle of 51 degreeswith the horizontal, and a 582N person is standing 1.2..
a toy cannon uses a spring to project a 5.39-g soft rubber ball. the spring is originally compressed by 4.93 cm and has
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 2.8and accelerates at the rate of 6.3 , and it is in contact with the pottery wheel (radius 28.0 ..
A horizontal force of magnitude 100 N begins to pull directly on block. In unit-vector notation, what are the resulting accelerations of (a) block and (b) slab.
The driver accelerates a 260.0 kg snowmobile, which results in a force being exerted that speeds up the snowmobile from 6.00 m/s to 26.0 m/saver a time interval of 60.0s. What is the snowmobile's change in momentum?
A point source of light illuminates an aperture 4.00 away. A 17.0 -wide bright patch of light appears on a screen 2.00 behind the aperture, How wide is the aperture
A tank having a volume of 0.11 m3 contains helium gas at 170 atm. How many balloons can the tank completely fill
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