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An alien pilot of an intergalactic spaceship, on a mission to measure the sizes of galaxies, is traveling at 0.86c relative to the galaxy A. She determines the length of the short axis of the galaxy A to be 2.9 × 1017 km. What would the length of this axis be as measured by an observer living on a planet within the galaxy A?
Find the radical acceleration at the edge of a phonograph record of radius 0.15 m rotating at 78 rev min^-1. B.) The record comes to a stop with a uniform angular acceleration in 2 s. Find the tangential acceleration at the edge and the angular accel..
While traveling along a level highway at a speed of 27m/s you shift the vehicle into neutral and find it takes 45 second to slow down to 20 m/s mile per hours.
A rectangular block of glass is totally immersed in water (n = 1.33). What is the refractive index of the glass
The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.
One summer day, you decide to make a popsicle. You place a popsicle stick into a 9-oz glass of orange juice, How long does it take your popsicle to freeze
A college campus features a large fountain surrounded by the circular pool. Two students start at the northernmost point of pool and walk slowly around it in opposite directions.
Stars spend their time on the main sequence converting hydrogen into helium. There are two sets of reactions that can take place within a star, supporting the fusion process. Describe the two reaction chains or cycles used for hydrogen fusion and wha..
An electron with a speed of 7.00 108 cm/s enters an electric field of magnitude 1.00 103 N/C, traveling along the field in the direction that retards its motion. (a) How far will the electron travel in the field before stopping momentarily?
illustrate what is the new horizontal distance L between the base of the slide and the splashdown point of the person?
Hydrogen under p = 5 atmospheres and T = 20 C is warmed isobarically until its volume increases from 1 to 2 liters. Calculate the absorbed heat.
Four identical charges, +Q, occupy the corners of a square with sides of length a. A fifth charge, q, can be placed at any desired location. Find the loction of the fifth charge, and value of q, such that the net electric force acting on each of t..
A small conductive rod of length 1.4 m moves with a constant velocity v=11 m/s in a direction parallel to a long wire carrying a current of 34 A. Calculate the electric potential induced across the rod
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