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An electron is released near a (a) point charge, (b) an charged line of infinite length, or (c) an infinite charged plane. In which of these cases does the electron undergo constant acceleration?
Two point charges are separated by a distance r and repel each other with a force F. what is the magnitude of the force of repulsion between them
Class 2 lasers, including many laser pointers, produce visible light with no greater than 1 mW total power. Find the peak electric field in the laser beam
The world's largest refracting telescope is operated at the Yerkes Observatory in Wisconsin. It has an objective of diameter of 1.02 m. What is the minimum separation of two objects on the ground
A 7.28-%u03A9 resistor is connected across a 9.00-V battery. The voltage between the terminals of the battery is observed to be only 7.27 V. obtain the internal resistance of the battery
Ball 1, with mass of 100g and traveling at 10 m/s, collides head-onwith ball 2, which has a mass of 300g and is initially at rest. What is the final velocity of each ball
The position of a particle moving along an x axis is given by x = 20t2 - 3.0t3, where x is in meters and t is in seconds. compute the maximum positive velocity reached by the particle
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, How far from the castle wall does the launched rock hit the ground
A parallel plate capacitor has a capacitance C when there is no dieletric inside of it. Suppose a wedge of material with dielectric constant K is inserted in between the plates of the capacitor, find the new capacitance with this dielectric inserte..
A student is doing Lab 3: Motion in One Dimension. The student places 50 g on the cart and 50 g one the hanger, What happens to the acceleration
A hydrogen atom has a radius of about 0.05 nm. (a) Estimate the uncertainty in any component of the momentum of an electron confined to a region of this size. in kg · m/s (b) From your answer to (a), estimate the electron's kinetic energy in three di..
Consider a simple model for the interior of the Earth: there is a spherical iron core with constant mass density ?0 and radius a; outside the core is "rock" with constant density ?1. Calculate the radius a of the iron core
An electric field is constant at every point on a square surface that is 0.80 m on a side. Calculate the electric flux E passing through the surface
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