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A 10.0 m length of wire consists of 5.1 m of copper followed by 4.9 m of aluminum, both of diameter 1.0 mm. A voltage difference of 24 mV is placed across the composite wire.
(a) What is the total resistance (sum) of the two wires?
(b) What is the current through the wire?
(c) What are the voltages across the aluminum part and across the copper part?
A copper laboratory tank has a diameter of 0.48 m at 20degree celcius. what would be the new diameter if the tank is filled with 80degree celcius alcohol.
For a science fair competition, a group of high school students build a kicker-machine that can launch a golf ball from the origin with a velocity of 37.5 m/s and initial angle of 38.4° with respect to the horizontal.
A thick spherical shell of charge Q and uniform volume charge density ? is bounded by radii r1 and r2, where r2 > r1. With V = 0 at infinity, find the electric potential V as a function of the distance r from the center of the distribution, consideri..
A hook is boxing primarily involves horizontal flexion of the shoulder, while maintaining a constant angle at the below. What is the average speed of the fist during the hook
imagine a very heavy cube of pure gold that is 1.40 m on a side. approximate the atoms in this cube as little cubes.
A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. How long does it take the red ball to reach the ground
An organ pipe is open at both ends. It is producing sound at its fifth harmonic, What is the length of the pipe
q1. a rifle fires a 2.39 10-2-kg pellet straight upward since the pellet rests on a compressed spring that is released
A banked curve has been designed so that it is safest for a vehicle going 70mph. A 5512 lb vehicle travels with a speed of 60 mph on the curve. Calculate the force that the road exerts on the vehicle
A rifle is aimed at a target that is 55m away. The bullethits the target 1.5cm below the aim point. What was the bullet's flight time? What was the bullets speed as it left the barrel?
Heather and Mathew walked eastward with a speed of 9.8 m/s. If it takes those 34 min. to walk to the store, how far have they walked.
A system consisting of an ideal gas at the constant pressure of 120kPa gains 800J of heat a)Find the change in volume of the system if the internal energy of the gas increases by 480J b)Find the change in volume of the system if the internal energ..
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