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A charge of -4 x 106 coil is moving at 800 m/s along a path parallel to a horizontal straight wire and is 20 cm above it. If the wire carries a current of 12 amps, and is directed towards the East, calculate
(a) the maginetic field produced by the wire acting on the charge; and the
(b) magnitude and direction of the force on the charge? ( µ0= 4Ï€ x 10-7 T.m.A)
Phil is standing on a third floor balcony, 10m above the ground. Where does the ball hit the ground
A 2000-kg horizontal beam is supported at each end. A 160-kg load rests a quarter of the way from one end if the beam and 120 kg cargo is 1/3 from the other end. What is the vertical force on each of the supports.
X-rays are used for analyzing molecular structure. What is the frequency (in Hz) of X-rays that have a wavelength of ? = 13.3 nm
A rail car that weighs 35 N is accelerated at 7.7 m/s/s for 5.6 seconds. How much work is done on the rail car
A car owner forgets to turn off the headlights of his car while it is parked in his garage. how long will it take the battery to completely discharge
The space shuttle typically orbits 400 km above the earth's surface. The earth has a mass of 5.98 × 1024 kg, Use your knowledge of gravitation to determine the orbital speed of the shuttle's cargo
You are sitting in a stationary boat and your friend is sitting in another boat nearby. Ocean swells (long waves) are passing by. What is the period of the swell
consider two ZAMS stars: 09 and B0. The effective temperature of the 09 star is 34,500 k. Assuming a hydrogen density of 10^8 m^-3, and Alpha = 3.1 x 10^-19 m^3 s^-1, estimate the Stromgren radius of the stars in pc and AU
One way to decrease your use of fossil fuels is to heat your water via solar radiation. A solar water heater runs cold water through dark, radiation absorbing tubing.
An electron is launched at 3.20x10 6 m/s into a 6.30 T magnetic field. What is the diameter of its orbit, what is the magnitude of the force on the wire
The end point of a spring vibrates with a period of 1.9 seconds when a mass m is attached to it. When this mass is increased by 9.630×101 kg, the period is found to be 4.1 seconds. Find the value of m.
Estimate the electron drift velocity. Estimate the current density. Estimate the electric field in the wire.
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