Two metal bearings both have a positive charge of unequal and unknown magnitude. They are brought into contact and then separated. After separation, the charge on one bearing is measured to be 3.50 C.
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a) What is the charge on the other bearing, after separation?
b) What was the net charge on both bearings before separation?
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- A positive charge Q=3 mC is placed inside a spherical conducting shell with inner radius a and outer radius b which has an extra charge of 2 mc placed on it. When all motion of charges ends, then the charges on the inner and outer surfaces of the shell areA polythene piece rubbed with wool is found to have a negative charge of 3×10-7 C. (a) Estimate the number of electrons transferred (from which to which?) (b) Is there a transfer of mass from wool to polythene?Two chloride ions and two sodium ions are in water, the "effective charge" on the chloride ions (CI) is -2.00 × 10-21 C and that of the sodium ions (Na) is +2.00 x 10-21 C. (The effective charge is a way to account for the partial shielding due to nearby water molecules.) Assume that all four ions are coplanar. 45.0% L. where a 0.280 nm, b=0.740 nm, and c= 0.670 nm. What is the direction of electric force on the chloride ion in the lower right-hand corner in the diagram? Enter the angle in degrees where positive indicates above the negative x-axis and negative indicates below the positive x-axis.
- How many electrons would be required to produce 16 μC of negative charge? (e = −1.6 × 10−19 C) (Round the final answer to three decimal places.)(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 8.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. 236000000000 X You can approach this problem as a unit conversion exercise in that you need to convert grams of silver to electrons using the information given in the problem as conversion factors (b) Imagine adding electrons to the pin until the negative charge has the very large value 1.00 mC. How many electrons are added for every 109 electrons already present? X 5.30 Note that 109 is one billion. It might help to rewrite your answer from part (a) as the number of billions of electrons. Need Help? Read It Watch ItIf charge X has a magnitude of 5*10-9 C, charge Y would have an approximate charge of __________ C.
- What is the magnitude of the electrostatic force between a singly charged sodium ion (Na", of charge +e) and an adjacent singly charged chlorine ion (CI', of charge -e) in a salt crystal if their separation is 2.82 x 101º m?A paisa coin is made up of Al-Mg alloy and weighs 0.75 g. It has a square shape and its diagonal measures 17 mm. It is electrically neutral and contains equal amounts of positive and negative charges. Treating the paisa coins made up of only Al, find the magnitude of an equal number of positive and negative charges.Flying insects such as bees may accumulate a small positive electric charge as they fly. In one experiment, the mean electric charge of 50 bees was measured to be ++(30 ±± 5) pCpC per bee. Researchers also observed the electrical properties of a plant consisting of a flower atop a long stem. The charge on the stem was measured as a positively charged bee approached, landed, and flew away. Plants are normally electrically neutral, so the measured net electric charge on the stem was zero when the bee was very far away. As the bee approached the flower, a small net positive charge was detected in the stem, even before the bee landed. Once the bee landed, the whole plant became positively charged, and this positive charge remained on the plant after the bee flew away. By creating artificial flowers with various charge values, experimenters found that bees can distinguish between charged and uncharged flowers and may use the positive electric charge left by a previous bee as a cue…
- How many charges will it take to make up a µC?Charges of 3.0 uC are located a x=0, y=2.0m and at x=0, y=-2.0m. Charge Q are located at x=4.0m, y=2.0m and at x=4.0m, y=-2.0m. The electric filed at x=0, y=0 is (9.0x10^3 N/C)i. Determine the value of Q(a) Two protons in a molecule are 4.40 × 10 -10 m apart. Find the electric force exerted by one proton on the other. magnitude What is the equation for the electrical force acting between two charged objects? N direction repulsive (b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one proton on the other. Fe %D F. What is the mass of a proton? (c) What must be a particle's charge-to-mass ratio if the magnitude of the gravitational force between two of these particles is equal to the magnitude of electric force between them? С/kg