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a steady e.m.f . of 1.62 V is maintained across two platinum electrodes placed in a solution of CuCl2 . At the end of 600 sec , the mass of copper deposited = 3.175 g. the back e.m.f of voltameter is given to be 1.427 V. Calculate the resistance of the voltameter. faraday current = 96500 C/mol , copper atomic wt = 63.5 g
A square coil, enclosing an area with sides 2.7 cm long, is wrapped with 2,461 turns of wire. What average voltage is induced in the coil
A boy of mass 30.3 kg, jumps off a diving platform2.38 m high. He lands in the water and goes under a distance1.48 m, before he stops. What is the boy's velocity when he hits the water
A circuit consists of a 12.0-V battery connected to three resistors (43 ohm, 18 ohm and 110 ohm) in series. Find the current that flows through the battery
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
the 20 g centrifuge at nasas ames research center in mountain view california is a horizontal cylindrical tube 58 ft
A person with a mass of 103 kg is standing on a scale that reads weight in newtons inside of an elevator. If the elevator accelerates upward at 3.2 m/s2, what does the scale read.
On a workday the average decibel level of a busy street is 72.0 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 50 every minute on a weekend, what is the decibel level of street.
Consider a straight wire with a radius A, carrying a current I, Use Ampere's law to calculate the magnetic field around the wire as a function of r, the distance from the center
During a basketball game, a 1.0 kg ball gets thrown vertically in the air. Its momentarily stationary at a height of 5.0 m and then falls back down. What is the ball's speed when it hits the floor?
a laser beam of unknown wavelength is incident on a single slit of width 0.25 mm and forms a fraunhofer diffraction
An LR circuit is constructed using a (10.0 +/- 0.1) ohm resistor and a (330 +/- 3) mH inductor. Determine the value of the time constant from the exponential fit
A batter strikes a baseball moving horizontally towards him at 15 m/s. the ball leaves the bat horizontally at 24 m/s, determine the change in velocity of the ball
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