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A long, straight wire lies along the y-axis and carries a current of 10.4 A in the positivey direction. A second long, straight wire, parallel to the first and 9.5 cm to the right, carries a current of 5.10 A in the negativey direction. At what worth of the x coordinate does the resultant magnetic field vanish?
The near point of a naked eye is 21 cm. When placed at the near point and viewed by the naked eye, a tiny object would have an angular size of6.0 × 10-5 rad. Find the focal length of the eyepiece
An air conditioner operating between 97F and 72F is rated at 3900 Btu/h cooling capacity. What horsepower is required of the air conditioner motor
A plumb bob is suspended from a point in the Northern hemisphere at a latitude of 45o. Find the angle this plumb bob makes
The blades in a blender rotate at a rate of 7300rpm. What is the angular acceleration as the blades slow down
An elevator can lift a 185 N aircraft a distance of 36 meters in 11 s. What is the power output of the elevator
Calculate the mass of a solid gold rectanglar bar that has dimensions lwh = 4.20 cm x 12.0 cm x 30.0 cm. (the density of gold is 19.3x10^3 kg/m^3.)
A .363kg mass slides on a frictionless floor with a speed of 1.24m/s. The mass strikes and compresses a spring with a force constantof 44.5 N/m. how long does it take for the spring to stop the mass
a 1000 kg car traveling south at 30ms collides with a 2500 kg truck traveling north at 15 ms.a what is the total
A laser emits a single, 2.0-ms pulse of light that has a frequency of 2.83 ´ 1011 Hz and a total power of 75 000 W. How many photons are in the pulse
A 3.2-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,045oC is placed on top of a 2.4-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC
a microscope has an objective lens with an aperture diameter of .60 cm where a monochromatic light source of wavelength
A proton is shot at 4 × 107 m/s toward a gold atom, with a mass 197 times that of the proton and deflects it straight back with 90% of its initial speed. What is the recoil speed of the gold nucleus?
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