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In the series ac circuit where R = 420Ω, L = 0.20 H, C =1.2 μF (10-6), the ac power supply is ε = 60 sin(1500 rad/s t) V.
a) find the impedance Zb) find the phase angle and explain which is leading inphase, the voltage or the currentc) the rms current in the circuit
He would like a prescription for contact lenses to serve the same purpose. What is the exact contact lens prescription, in diopters.
The ratio of the average acceleration values is a1/a2 = 1.24. Find out the velocity of the car at the end of the initial ten-second interval.
You are standing at rest with respect to the earth holding a lance which you measure as 10 meters long. Which lance hits the other person first
What is the effective resistance of a parallel combination of a very large resistance and a very small resistance, what will be the current through each resistor
Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 1.60 m long conducting wire. estimate the tension in the wire.
A diver releases an air bubble of volume 2.0cm3from a depth of 16m below the surface of a lake, What is the volume of the bubble when it reaches just below the surface of the lake
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 4.60 m/s2 over the distance of 20.80 cm. It then decelerates at the constant rate of 1.03m/s2 (because of friction), until it again comes to..
The speed of sound in human tissue is on the order of 1500 m/s. A 3.50-MHz probe is used for an ultrasonic procedure. (a) If the effective phsical depth of the ultrasound is 250 wavelengths, what is the physical depth in meters?
A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. What is the smallest value of the coefficient of friction
A liquid with a density of 55 lbs/cubic ft is traveling through a pipe at a velocity of 115 ft/sec and its static pressure is 15 psi, what is its total head in ft
a 98-g piece of copper is heated in a furnace to a temperature tc. the copper is then inserted into a 150-g copper
A student pushes a 60 kg couch across a carpet at a constant velocity. find the magnitude of the force of the student on the couch
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