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An electron moves in the positive x-direction a distance of 2.43 m in 2.99·10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.75 m in 3.37·10-8 s. What is the average velocity of the electron over the entire time interval?
A car accelerates uniformly from rest and reaches a speed of 23.7 m/s in 8.43 s. The diameter of a tire on this car is 51.9 cm. What is the final angular speed of a tire in revolutions per second
A copper wire and an aluminum wire of the same length have the same resistance. What is the ratio of the diameter of the copper wire to that of the aluminum wire
At the intersection of Texas Avenue and University Drive, a yellow, subcompact car with mass 800kgtraveling east on University collides with a maroon pickup truck with mass 1850kg, Calculate the speed of the car before the collision
A five kilogram block and a four kilogram block are placed at either end of a compressed spring. what is the velocity of the other block
"The Compton generator is a beautiful demonstration of the Coriolis force due to the earth's rotation,.... A narrow glass tube in the shape of a torus or ring (radius R of the ring >> radius of the tube) is filled with water, plus some dust partic..
The electric field has been measured to be horizontal and to the right everywhere on the closed box. All over the left side of the box E1 = 120 V/m, and all over the right, slanting, side of the box E2 = 250 V/m. On the top the average field is E3..
Spider silk has a Young's modulus of 4.0x10^9 N/m^2 and can withstand stresses up to 1.4x10^9 N/m^2. If the web is 0.10 m in radius, how far down does the web extend
Four point charges, q, are fixed to the four corners of a square that is 11.2 cm on a side. An electron is suspended above a point at which its weight is balanced by the electrostatic force due to the four point charges, at a distance of 11 nm abo..
The acceleration of gravity at the surface of the moon is approximately 1/6 that at the surface of the earth (9.8 m/s2). What is the weight of an astronaut standing on the moon
A child complains that her 160 g of milk is too hot at 90 degree C. She then pour 80 g of cold milk at 7 degree C in it. If the specific heat of milk is 3800 J/kg.K, what is the temperature of the mixture?
A flywheel turns through 28 rev as it slows from an angular speed of 3.3 rad/s to a stop. Assuming a constant angular acceleration, find the time for it to come to rest
the temperature t in a metal ball is inversely proportional to the distance from the center of the ball which we take
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