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The temperature coefficient of resistivity for the metal gold is0.0034 (C°)−1, and for tungsten it is 0.0045(C°)−1. The resistance of a gold wire increases by 5.13% due to an increase in temperature. For the similar increase in temperature, what is the percentage increase in the resistance of a tungsten wire?
A car is traveling 80 km/hr in a school zone. A police car starts from rest just as the speeder passes it and accelerates at a constant rate of 8 km/hr·s. Eluciadte when does the police car catch the speeding car?
The surface pressure on Venus is 92.00 atm, and the acceleration due to gravity there is 0.894 g. What force does the Venusian atmosphere exert on the outside surface of the bottom of the tank
In an effort to stay awake for an all-night study session, a student makes a cup of coffee by first placing a 200 W electric immersion heater in 0.320kg of water.
A +6.00-µC charge is moving with a speed of 7.00 104 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 62.5 A in a direction opposite to that of the moving charge. Find the magnitude and directio..
A sphere of mass of m = 1.30 kg is first placed directly on the plate of an electronic scale. Calculate the density of the sphere
An electron has an initial velocity of 3.50 106 m/s in the x direction. It enters a uniform electric field = (400 N/C) , which is in the y direction. (a) Find the acceleration of the electron.
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. What is the tire pressure
A dam on a fresh water lake has a rectangular shape with a width of 150 m. If the water depth at the dam is 30 m, what is the total water force exerted on the dam
A soccer player kicks a rock horizontally off a 40.0 m high cliffinto a pool of water. what was the initial speed given to the rock
A playground merry-go-round of radius R = 1.80 m has a moment of inertia I = 255 kg · m2 and is rotating at 9.0 rev/min about a frictionless vertical axle. What is the new angular speed of the merry-go-round
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
a 55 kg man stands still in an elevator moving with a constant speed of 2.0ms.aif the down going elevator comes to rest
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