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Learn the toughest concepts covered in Physics with step-by-step video tutorials and practice problems by world-class tutors

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Ch 01: Units, Physical Quantities & Vectors

Ch 02: Motion Along a Straight Line

Ch 03: Motion in Two or Three Dimensions

Ch 04: Newton's Laws of Motion

Ch 05: Applying Newton's Laws

Ch 06: Work & Kinetic Energy

Ch 07: Potential Energy & Conservation

Ch 08: Momentum, Impulse, and Collisions

Ch 09: Rotation of Rigid Bodies

Ch 10: Dynamics of Rotational Motion

Ch 11: Equilibrium & Elasticity

Ch 12: Fluid Mechanics

Ch 13: Gravitation

Ch 14: Periodic Motion

Ch 15: Mechanical Waves

Ch 16: Sound & Hearing

Ch 17: Temperature and Heat

Ch 18: Thermal Properties of Matter

Ch 19: The First Law of Thermodynamics

Ch 20: The Second Law of Thermodynamics

Ch 21: Electric Charge and Electric Field

Ch 22: Gauss' Law

Ch 23: Electric Potential

Ch 24: Capacitance and Dielectrics

Ch 25: Current, Resistance, and EMF

Ch 26: Direct-Current Circuits

Ch 27: Magnetic Field and Magnetic Forces

Ch 28: Sources of Magnetic Field

Ch 29: Electromagnetic Induction

Ch 30: Inductance

Ch 31: Alternating Current

Ch 32: Electromagnetic Waves

Ch 33: The Nature and Propagation of Light

Ch 34: Geometric Optics

Ch 35: Interference

Ch 36: Diffraction

Ch 37: Special Relativity

Ch 38: Photons: Light Waves Behaving as Particles

Ch 39: Particles Behaving as Waves

Ch 40: Quantum Mechanics

Ch 41: Atomic Structure

Ch 42: Molecules and Condensed Matter

Ch 43: Nuclear Physics

Ch 44: Particle Physics and Cosmology

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Chapter 23, Problem 23

(a) How much excess charge must be placed on a copper sphere 25.0 cm in diameter so that the potential of its center, relative to infinity, is 3.75 kV? (b) What is the potential of the sphere's surface relative to infinity?

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Chapter 23, Problem 23

(a) How much excess charge must be placed on a copper sphere 25.0 cm in diameter so that the potential of its center, rela­tive to infinity, is 3.75 kV? (b) What is the potential of the sphere's surface relative to infinity?

(a) How much excess charge must be placed on a copper sphere 25.0 cm in diameter so that the potential of its center, relative to infinity, is 3.75 kV? (b) What is the potential of the sphere's surface relative to infinity?