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Solve the following questions given below:
Question 1: Calculate 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/mole.
Question 2: Electrons are added to the pin until the net negative charge is 2.00 mC. How many electrons are added for every 109 electrons already present?
Explain how you came up the prefixes and answer please.
Consider a proton confined to a region of typical nuclear dimensions, about 5 fm. Use the uncertainty principle to find its minimum possible kinetic energy in MeV, suppose that its moves in only one dimension
A coil of 150 turns of wire is in the form of a circle, carries a current of 63 mA, and sits in the center of a dipole magnet, What is the radius of the coils
a 1.2-kg 10-cm-diameter solid sphere is rotating about its diameter at 69 revmin.a what is its kinetic energy?b if an
Two plastic semicircular rods are arranged into a complete circle with radius 8.5cm. The top half has charge of +15 pC, and the bottom half has charge of -15pC. Determine the magnitude and direction of the electric field at the center of the circl..
A chair of weight 75.0 lies atop a horizontal floor; the floor is not frictionless. Using Newton's laws, calculate , the magnitude of the normal force that the floor exerts on the chair
A straight, vertical wire carries a current of 1.20 A downward n a region among the poles of a large superconducting electromagnet, where he magnetic field has magnitude B= 0.588 T and is horizontal.
Carbon 12 is defined such that 12g is one mole. So if a diamond is 37.5 g, how many moles of carbon are in it? How many molecules of carbon are in it
Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which is true about their kinetic energies as they reach the gr..
A learner sits on a rotating stool holding two 3.0 kilogram objects. When his arms are extended horizontally, Evaluate what the new angular speed of the learner
A marble is thrown horizontally with a speed of 13 m/s from the top of a building. From what height above the ground was the marble thrown
Your friend is trapped in a castle tower. You want to send her a message by attaching it to an arrow and shooting the arrow into a window in the tower. Obtain how high above the ground is the window
A 35-kg child rides a playground merry-go-round, standing 1.6 m from its center. What was the distance travelled by the child during this time
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