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1) Compute the number of electrons in a small, electrically neutral silver pin that has a mass of 7.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.
2) Imagine adding electrons to the pin until the negative charge has the very large value 2.00 mC. How many electrons are added for every 10 9 electrons already present?
A 5.7- kg concrete block rests on a level table. A 3.1- kg mass is attached to the block by a string passing over a light, frictionless pulley. If the acceleration of the block is gauged to be 1.2 m/s2, what is the coefficient of friction among the b..
q1. an electron starts from rest 75.5 cm from a fixed point charge with q -0.150 microc. how fast will the electron be
A car accelerates uniformly from rest and reaches a speed of22.9m/s in8.95s. Assume the diameter of a tire is58.3cm. What is the final angular speed of a tire in revolutions per second
A body of mass 12kg is moving with a velocity of 1m/s.Calculate the force required to stop it in 10s. how far will it travel before coming to rest
An evacuated spherical diving bell containing a camera is in the ocean at a depth of 187 m. Find the magnitude of the total force on the port
You can find a rough estimate of the size of a molecule by the following simple experiment. Let a droplet of oil spread out on a smooth surface of water. find the magnitude of the diameter of an oil molecule
A 45 kg girl is standing on a 130 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.33 m/s relative to the plank.
We are not normally aware of the gravitational or electric force between two ordinary objects. What is the reason in each case? Give an example where we are aware of each one and why.
Two scales on a voltmeter measure voltages up to 20.0 V and 28.0 V, respectively. Determine the coil resistance
On a horizontal, frictionless table, an open-topped 5.50kg box is attached to an ideal horizontal spring having force constant 390N/m. Find the period of the resulting motion of the box
Two equal length strips of aluminum and steel are heated. Which expands more? How much more - that is, by what factor is one expansion greater than the other?
When a turntable rotating at 45 rev/min is shut off, it comes to rest in 20 s. Find the angular acceleration
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