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You need to build an ammeter that can measure up to 0.5 A. You are given a galvanometer that reads 75 A at its full-scale deflection, and are told that this galvanometer has an internal resistance of 8000 ?. What value should you choose for the shunt resistor to convert this galvanometer into an ammeter?
An ac power generator produces 24 A rms at 4909 V. The voltage is stepped up to 86000 V by an ideal transformer, What percentage of the power delivered by the generator is dissipated as heat in the power line
A positive charge of 0.800? C is located in a uniform field of 1.20×105 N/C. A negative charge of -0.400? C is brought near enough to the positive charge that the attractive force between the charges just equals the force on the positive charge du..
A 256Hz sound wave in 20°C air propagates into the water of a swimming pool. What are the water-to-air ratios of the wave’s frequency, wave speed and wavelength?
Nearly plane waves of C02 laser light of wavelength l = 10.6 m emerge from a circular aperture 10 cm in diameter. If the C02 laser light is to be examined on a target in the far field
The weight of a block of metal is measured with a scale first in air, then in water. Find the specific gravity of the metal ( the ratio of the density of metal to the density of water). The tension of the block is measured 6.0N in air and 4.0N in wa..
A vertical square plate (10' x 10') is used to dam a channel. determine the total resultant force on the plate and the location
Basketball player Darrell Griffith is on record as attaining a standing vertical jump of 1.2 m. What is his speed as he leaves the floor
If light enters the window from outside at 23.0° to the normal, at what angle to normal does it exit the window on the inside.
If its length is 49.8 m when measured from inside the spacecraft, what is its length measured by a ground observer
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, How far from the castle wall does the launched rock hit the ground
You are working for a shipping company. Your coworker is supposed to grab the packages as they arrive at the top of the ramp. But she misses one and it slides back down. What is its speed when it returns to you
a glider with mass m= 0.200 kg sits on a frictionless horizontal air track, What is the displacement x of the glider from its equilibrium position when its speed is 0.20 m/s
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