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A wire etched onto a computer chip carries a current of 0.000000030 A. In 1.8 milliseconds, how many electrons flow past a point on the wire?
An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 ?C and rejects heat to a room of temperature 21.5?C, How much energy must be supplied to the device
A gas sample enclosed in a rigid metal container at room temperature (20.0°C) has an absolute pressure p1. The container is immersed in hot water until it warms to 40.0°C. What is the new absolute pressure p2?
Consider a regular hexagon of side length, L = 10cm. A charge, Q = 2µC, is located at each vertex, Find the electric field vector at the center
When an object is 15.5cm from a lens, an image is formed 14cm. from the lens on the same side as the object. Is it erect or inverted
The motor of an electric drill draws a 8.11 A current at the power line voltage of 120 V rms. What is the motor's power (in W) if the current lags the voltage by 27.1°
A vertical solid-steel post 26.0 cm in diameter and 2.53 m long is required to support a load of 8200 kg. What is the strain in the post and the change in the posts' length when the load is applied
What percentage of a photon beam would interact in passing through a 3-mm slice of absorber if the linear attenuation coefficient were 0.15/cm
1.you are holding a 6-kg dumbbell straight out at arms length. assuming your arm is 0.70 m long what torque is the
A steel wire in a piano has a length of 0.60- m and a mass of 4.5 x10-3 kg. To what tension must this wire be stretched in order that the fundamental vibration correspond to middle C (fC = 261.6 Hz on the chromatic musical scale).
A thin, uniform, rectangular sign hangs vertically above the doorof a shop. The sign is hinged to a stationary horizontal rod alongits top edge. Calculate its angular speed immediately after the impact
Two coils are close to each other. The first coil carries a time-varying current given by I(t) = (5.80 A) e-0.0250tsin(377 t). What is the mutual inductance of the coils
The label on a 12.0-V truck battery states that it is rated at 150.0 A·h (ampere-hours). Treat the battery as ideal. How much electric energy can the battery supply
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