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Consider a magnifying glass that produces a magnification of 3.00 when held 4 cm from an object, such as a rare coin.
a) What is the focal length, in centimeters, of the magnifying glass?
b) Calculate the power of the magnifier in diopters.
Two capacitors are connected in parallel with a 12 v battery. Each has plates of area 16 cm^2. The plate seperations are d1=2mm and d2=3mm. how much work is done to move the slab
An oscillating LC circuit consists of a 73.7 mH inductor and a 5.39 ?F capacitor. If the maximum charge on the capacitor is 3.74 ?C, what are the total energy in the circuit
A coffee cup immersion heater utilizes a heating coil of resistance R= 8.5 Ohms. If a current of 12.9A passes through the coil, when operated at 110V determine the electrical power dissipated in the coil.
You have three resistors with resistance 10, 20, 30. You want to use all 3 in any kind of connection to form equivalent resistor. Calculate their equivalent resistances
A 263 g block is dropped onto a vertical spring with force constant k = 2.52 N/cm. The block sticks to the spring and the spring compresses 11.8 cm before coming momentarily to rest. While the spring is being compressed, how much work is done (a) by ..
A boy in a wheelchair (total mass 51.0 kg) has speed 1.40 m/s at the crest of a slope 2.40 m high and 12.4 m long.Find the work he did in pushing forward on his wheels
Radon is a radioactive gas, commonly found in the basement of ahouse. It has a half- life of 3.8 days. What is the decay constant of radon
The sound level, ß, measured at a radius r = 11.00 meters from a point sound source that is emitting sound equally in all directions is 95.17 dB, what is the sound power emitted by the source
The Eskimo pushes the same 50.0-kg sled over level ground with a force of 2.25 102 N exerted horizontally, evaluate the coefficient of kinetic friction
An elastic circular conducting loop expands at a constant rate over time such that its radius is given by r(t) = r0 + vt, where r0 = 0.170 m and v = 0.0290 m/s. estimate the direction and the magnitude of the induced current
A 1.25-m-diameter wrecking ball hangs motionless from a 1.75-cm-diameter cable. how much does the cable stretch
question a dipole consisting of charges plusmn e 220 nm apart is placed between two very large essentially infinite
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