A 40-g ball of copper has a net charge of 2.5 µC. What fraction of the copper's electrons have been removed? (Each neutral copper atom has 29 protons and 29 electrons, and copper has an atomic mass of 63.5 a.m.u.) Hint The fraction of electrons removed is (Note: Enter your answer this way. For example, if 1% of the electrons have been removed, enter "0.01" or "1E-2". Use the "E" notation to enter the number in scientific notation if needed. For example, to enter 3.14 × 10-¹2, type in "3.14E-12".)

A 40-g ball of copper has a net charge of 2.5 µC. What fraction of the copper's electrons have been removed? (Each neutral copper atom has 29 protons and 29 electrons, and copper has an atomic mass of 63.5 a.m.u.) Hint The fraction of electrons removed is (Note: Enter your answer this way. For example, if 1% of the electrons have been removed, enter "0.01" or "1E-2". Use the "E" notation to enter the number in scientific notation if needed. For example, to enter 3.14 × 10-¹2, type in "3.14E-12".)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter23: Electric Forces

Section: Chapter Questions

Problem 35PQ: Two 25.0-g copper spheres are placed 75.0 cm apart. Each copper atom has 29 electrons, and the molar...

See similar textbooks

Similar questions

A typical AA size rechargeable NiMH battery can store 1100-2100 mAh of electric charge. The small print on the battery in your hand says 1530 mAh. Can you express this amount of electric charge using the usual coulomb units? You are now charging a camera battery. The charger moves 4470 C of electric charge from the negative terminal of the battery to the positive terminal. (In reality the charger moves the negative electrons from the positive terminal to the negative terminal, but this is not important for us right now.) Assuming - incorrectly - that the voltage of the battery remains a constant 3.20 V during the whole charging process, determine the work done by the charger. And now you are charging a capacitor bank for a high-voltage physics experiment. The power supply moves Q = 8990 C of electric charge in the charging process. The supply is set to stop, when the voltage reaches AV = 710 V. How much work did the power supply perform?
Problem 7: Consider the arrangement of three point charges in a right triangle shown in the figure, which have charges q1 = 7.5 µC, 92=-73 µC, and q3= 15 µC. The distance between q1 and q2 is 39 cm and the distance between q2 and q3 is 67 cm. Randomized Variables ed ed 91=7.5 μC 92 = -73 μC 93= 15 µC a=39 cm b= 67 cm 9₁ a +9, b 92 art (a) How much potential energy, in joules, is stored in this configuration of charges? Part (b) Now assume that q, and g, are fixed in space at the locations indicated. and q3 is brought into it's position from infinity. What is the change in potential energy of the system, in joules, select part process? U₂ = 1
A pair of positive and negative charges of 2.0*10^(-10) C are separated by 1.0*10^(-9) m. What is the electric filed magnitude 1.0*10(^-10) m from the positive charge and 2.0*10^(-10) from the negative charge? Note this point is on the line that passes through
ASAP
please ans b c d
A test charge of +5 uC is placed halfway between a charge of+6 uC and anotherof -4 uC separated by 20 cm. What is the magnitude and the direction of the force on the test charge? Draw the diagram.k= 9x10^9
Problem 9: A sample of sulfur has a mass of 110 g. Part a). What is the net charge on the sample if an extra electron is added to one out of every 10^12 sulfur atoms? (The properties of sulfur may be obtained from the periodic table or some alternative source.) q = _____ c
An initial neutral piece of plastic is has 7.12x10^15 electrons removed from it. Determine the net charger of the plastic in UC
The electric field vector is given by E=[0.2, –0.6, 0.3] V/m and Area vector points to A=[–4, 3, -5] m^2. What is the angle between the E-field and Area vector in degrees? Answer with two decimal places. note: convert answer to milli
ans e
The positive charge, q1 =4.5 µC, and the two negative charges, q2 = - 2.5 µC and q3 = -2.5 uC, are placed at the comers of the triangle with side lengths as indicated in the diagram. Let positive r be towards the right of the page, and let positive y be towards the top of the page. 5.0 m 3.0 m 4.0 m 93 92 A 50% Part (a) If the net force on charge qi has the form F = F,i + F, j, what is Fr, in newtons? F = 7 9 sin() cos() tan() cotan() asin() acos() E 4 6. atan() acotan() sinh() cosh() tanh() cotanh() IN O Degrees O Radians Submit Hist Fendback Feedback: Hints: A 50% Part (b) If the net force on charge qi has the form F = Fri + Fy j, what is Fy, in newtons?
If electrons are negatively charged and the nucleus is positively charged, why do they not attract and collide with each other? The pull from the nucleus provides a centrifugal force, which is not strong enough to draw the electrons into the nucleus. The pull from the nucleus provides a centripetal force, which is not strong enough to draw the electrons into the nucleus. The pull from the nucleus provides a helical motion. The pull from the nucleus provides a cycloid motion.