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Two stationary positive point charges, charge 1 of magnitude 3.20nC and charge 2 of magnitude 1.50nC , are separated by a distance of 30.0cm . An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. What is the speed V-final of the electron when it is 10.0cm from charge 1? Express your answer in meters per second.
A manchine part has the shape of a uniform sphere of mass 225g and diametere 3.00cm. It is spinning about a frictionless axle through its center, how long will the part spin until it stops
a block is pushed across a rough horizontal surface by a horizontal force of magnitude P= 25 . The coefficient of kinetic friction between the block and the ground is 0.3 if the blck started from rest
The "reaction time" of the average automobile driver is about 0.7. Compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 14.6
A 12.0-? resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 150-V generator, What is the maximum value of the rms current
With what frequency should the tip be tapped to make the strip oscillate with maximum amplitude?
You are standing 2.6m from a 120w bulb. If the pupil of your eye is a circle 5.0 in diameter, how much energy enters your eye per second
1.9*10^20photons per second are emitted by a 70W lightbulb, the wavelength is 550nm. How many photons per second are entering the pupil
The howler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 8.9 km, What is the ratio of the acoustic intensity produced by the juvenile howler to the reference intensity
A cube of ice is taken from the freezer at -8.7°C and placed in a 97 g aluminium calorimeter filled with 351 g of water at the room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of an ice cube.
A roller-coaster car moves 198 ft horizontally and then rises 143 ft at an angle of 30° above the horizontal. It then travels 143 ft at an angle of 40° downward
A monochromatic light source emits a wavelength of 490 nm in air. When passing through a liquid, What is the liquid's index of refraction
A 16.0-? resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 155-V generator. At what frequency is the current a maximum
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