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What is the purpose of wires in a circuit? Why do we use wires to connect power supplies to resistors or other objects on a circuit board? Why can't we just use power supplies and resistors? (short answer question)
An air molecule is moving at a speed of 450 m/s. How many meters would the molecule move during 7.00 ms (milliseconds) if it didn't collide with any other molecules.
A 9.00 kg sign hangs unevenly between 2 beams. On the right hand side, the angle between the horizontal and the cable is 16.0 degrees. Find the tension in the left side cable
An electron is in circular motion of with a speed of 2 x 104 meter per second while in a 40 mT magnetic field. Estimate the diameter of the circular trajectory
A uniform electric field of magnitude 410N/C pointing in the positive x-direction acts on anelectron, which is initially at rest. What is the work done by the field on the electron
A cube of aluminum (Cp = 0.897 J/g•K) has a temperature of 325 K. It is placed in a beaker of cold water. If the aluminum cools to 301 K as the water absorbs 815.7 J of heat, what is the mass of the cube
the atomic mass of lithium-6 is 6.015123 u. how much energy is required to completely separate the nucleons in a
53.53 J of heat are removed from a gas sample while it is being compressed by a piston that does 52.01 J of work. What is the change in internal energy of the gas
A commuter train passes a passenger platform at a constant speed of 44.0 m/s. The train horn is sounded at its characteristic frequency of 320 Hz. What overall change in frequency is detected with a person on the platform as the train moves from appr..
A boy tosses a coin straight up to2.4 m. Assume the height when the coin leaves his hand is 1.0 m. What was the initial speed of the coin when it left his hand?
On a roller coaster ride the totalmass of the cart - with passengers included - is 290 kg. PeakK is at 44.5 m above the ground, peakL is at 28.0 m. The speed of the cart atK is 19.0 m/s, at L it is 12.6m/s. (The wheel mechanism on roller coaster c..
Released from rest at the same height, a thin spherical shell and solid sphere of the same mass m and radius R roll without slipping down an incline through the same vertical drop H. Each is moving horizontally as it leaves the ramp.
A particle possessing 8.25 uC of charge and mass 8.55 g is fired at a speed of 255 cm/s through two charged plates of length 34.6 cm, calculate the distance y in which the charge falls below its intended path
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