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Question: A flint glass plate (n= 1.66) rests on the bottom of an aquarium tank. The plate is 8.00 cm thick (vertical dimension) and covered with water (n= 1.33) to a depth of 12.0 cm. Calculate the apparent thickness of the plate as viewed from above the water. (Assume nearly normal incidence of light rays.)
An airplane flies at 200 km/h at 30.0o N of W. The wind blows it at 30 km/h at 45.0o E of N. What is the resultant velocity of the airplane (magnitude and direction)
A swarm of bees flew through a field of static electricity and each became charged to a magnitude of +35 µC. obtain the magnitude of the magnetic force that they feel
The frequency is 100 MHz. Neglecting losses in the ferrite, calculate the antenna efficiency
When an object such as a plastic comb is charged by rubbing it with a cloth, If that charge is 3.4 µC, by what percentage does the mass of a 35g comb change during charging
A stone is tied to a string (length = 0.972 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical.
A carnival merry-go-round has a large disk-shaped platform of mass 120 kg that can rotate about a center axle. Determine the rotational velocity of the platform
An uncharged capacitor is connected to the terminals of a 4 battery, and 12 flows to the positive plate. The 4 battery is then disconnected and replaced with a 7 battery, with the positive and negative terminals connected in the same manner as bef..
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, & a power of +1.83 diopters in the close-vision part. Compute the near & far points of this person's uncorrected visio..
A 13.8-g piece of Styrofoam carries a net charge of -0.72 µC and is suspended in equilibrium above the center of a large, determine the charge per unit area on the plastic sheet
the objective mirror of the mt. palomar telescope has a 200-inch diameter. if an ocular with a diameter of 0.90 inches
An electron moving with a velocity of 2.7 x10^6 m/s in the positive x direction enters a region, What is the magnitude of the electron's acceleration
An electron with speed v0 = 2.26×107m/s is traveling parallel to an electric field of magnitude E = 2.36×104N/C. How far will the electron travel before it stops
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