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Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. If6.21016Ca2+ions and8.11016Cl? ions per second move in opposite directions through an imaginary area between the electrodes, what is the current in the solution?
mA
The length of a certain wire is doubled and at the same time it's radius is reduced by a factor of 2
The coefficients of friction between a block of mass 0.5 kg and a surface are ?s = 0.75, What is the magnitude of the frictional force (in newtons) on the block if the block is at rest
Presume that the strength of the electric ?eld about an isolated point charge has a certain value at a distance of 4 m.
If the length of the field between goal lines in the Earth frame is 85.2 m, what length is measured in the rest frame of the particle
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 3.58 m, what is the magnitude of the astronaut's linear speed
What is sign and magnitude of charge
A 218.7 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. What is the velocity (speed) of the satellite
A copper telephone wire has essentially no sag between poles 34.00 m apart on a winter day when the temperature is -20°C. How much longer is the wire on a summer day.
A grating has exactly 7800 lines uniformly spaced over 2.63 cm, What is the expected angle for the third-order maximum of the green line
A ?ghter plane ?ying at constant speed 420 m/s and constant altitude 10000 m makes a turn of curvature radius 2800 m. On the ground, the plane's pilot weighs (62 kg)(9.8 m/s2) = 607.6 N. W
An outside loudspeaker (considered a small source) emits sound waves with a power output of 120 W. Find the intensity level in decibels at that distance
The electric potential energy stored in the capacitor of a defibrillator is 110 J, and the capacitance is 120 ?F. What is the potential difference across the capacitor plates
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