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A 9.66 × 1014 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2.05 × 108 m/s. The wavelength of the wave in vacuum is closest to:
212 nm311 nm248 nm280 nm342 nm
If the central charge shown below is displaced 0.350 nm to the right while the other charges are held in place, find the magnitude and direction of the net force
A farsighted person uses glasses with a refractive power of 3.6 diopters. What is this person's near point when not wearing glasses
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of +10q. Sphere B carries a charge of -7q. Sphere C carries no net charge. How much charge ends up on sphere C
wo point charges of equal magnitude are 8.2apart. At the midpoint of the line connecting them, Find the magnitude of the charges
A rollercoaster with passengers has a mass of 2500 kg. This rollercoaster is powered to the top of a 25 m hill where it pauses for a moment at rest. What is the speed of the rollercoaster at the top of the vertical loop
An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, For this load current, find the power delivered to the customer
An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. How far (in km) must he now travel to reach base camp
Saturn makes one complete orbit of the Sun every 29.4 years. Calculate the radius of the orbit of Saturn
Two large metal plates of area 0.5 m2 face each other. They are 4.8 cm apart and have equal but opposite charges on their inner surfaces. what is the magnitude of the charge on each plate
the overhead cable for a street trolley is strung horizontally 5 m above the ground. What is the magnetic field at street level directly under the cable
A ball rolls off a table and falls 0.81 m to the floor, landing with a speed of 5.5 m/s. What initial speed must the ball have if it is to land with a speed of 6.3 m/s
A student sitting on a frictionless rotating stool has rotational inertia 0.97 kg*m2 about a vertical axis through her center of mass when her arms are tight to her chest. what's her new rotational velocity
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