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power lines have a limit on the maximum size of the electric fieldthey produce. in most states, a maximum of 5kN/C at about 20 m fromthe wires is allowed. This is quite large compared to the Earth'sfair-weather electric field of about 100 N/C. Assume that thecharge on the wire is static (not true, but a simplifcation here)and use the formula for the electric field for a wire : E=(2kλ)/(r) to determine how much charge per unit length is onthe wire.
Suppose that the net horizontal force is as a result of rolling friction only and take the free-fall acceleration to be g = 9.80 m/s^2.
A photon has an energy equal to the kinetic energy of an electron with speed, u, which may be close to the speed of light, c. Calculate the ratio of the wavelength of the photon to the wavelength of the electron
A particle of mass m0 is given a kinetic energy equal to one-fourth its rest-mass energy. How fast must the particle be traveling
the electric field strength is 2.00times104 inside a parallel-plate capacitor with a 0.500 spacing. an electron is
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27 × 10-25 kg. evaluate the radius of the path
assume that adults have iq scores that are normally distributed with a mean of 105 and a standard deviation of 20. find
A typical wall outlet voltage is 120 volts in the United States. Personal MP3 players require much smaller voltages, typically 709.5 mV. If the number of turns in the primary coil is 1353, calculate the number of turns on the secondary coil of the ad..
Aluminum has a density of 2.70 g/cm3. We would like to make aluminum foil that is 96 micrometer thick, how many meters long of an aluminum foil can we make
A uniformly charged ring of radius 10.2 cm has a charge of 87.5 µC. Find the electric field on the axis of the ring at x = 3.0 cm
A thick, vertical iron pipe has an inner diameter of 0.077 m. A thin aluminum (? = 23x10-6 (C°)-1) disk, What is the temperature of the aluminum disk when the disk falls into the pipe
A car engine with mass = 220 kg hangs from a light chain that is linked at ring O to two other light chains as shown
a converging lens forms a real image 1.27 times the size of the object. The object distance is 22cm. Find the distance of the focal point from the center of the lens
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