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An aquarium contains a 5-cm layer of water n=1.333 floating on top of carbon tetrachloride. If the angle of incidence into the water from the carbon tetrachloride is 20 degrees, what is the angle of refraction into the air?
Determine the inductance of a solenoid with 650 turns in a length of 20cm . The circular cross section of the solenoid has a radius of 4.1cm
A garden plot must have a central planting area of length 13 m and width 8 m. There is to be a sidewalk around its edge of width w. what is the sidewalk width
A 480-kg sailboat has an acceleration of 1.17 m/s2 at an angle of 59.3 ° north of east, find the direction of the net force that acts on the sailboat
In a lightening bolt, current travels upward, from ground to cloud.Suppose that at the moment that a 35,000, what is the magnitude and direction of the magnetic force on the airplane
A runner approaching the start/finish line hears the bell signaling one lap to go. The bell emits a 352 Hz tone, How fast is she going
an airplane with a wingspan of 100m flies parallel to the earth's surface at a point where the downward component of the earth's magnetic field is 0.500 x 10^-4 T. what is the reading of the voltmeter
A skydiver opens the parachute at the moment when he is 540 meters above the ground and his speed (right before opening the parachute) is 97m/s. What should be the magnitude of the air resistance force
You are driving in one direction on a long straight road. You drive in the positive direction at 126 km/h for 30.0 minutes, How far did you drive
A projectile is shot horizontally at 65.3 m/s from the roof of a building 24.4 m tall. Determine the distance from the base of the building that the projectile lands
The wavelength of red helium-neon laser light is 632.8 nm. What is the wavelength of the laser light in the class that has an index of refraction of 1.5 in units of nm, What is the speed of the laser light in the glass in units of 10^8 m/s
A certain medical machine emits x-rays with a minimum wavelength of 0.025 nm. One day, the machine has an electrical problem and the voltage applied to the x-ray tube decreases to 80 percent of its normal value. Now what is the minimum x-ray wavel..
The primary coil of an ideal transformer has 650 turns, and the secondary coil has 260 turns. Assume the primary coil carries 15 A at a voltage of 120 V. What is the output current of the secondary coil
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