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A current of 3.50 A is carried by a copper wire of radius 0.87 mm. If the density of the conduction electrons is 8.47 1028 m%u22123, what is the drift speed of the conduction electrons?
A football is kicked at ground level with a speed of 40 m/s at an angle of 32.0 degrees to the horizontal. How much later does it hit the ground
A second fragment, who's mass is 3.4 kg, moves away from the point of explosion with a speed of 418 m/s along the negative x axis. What is the speed of the third fragment? Ignore effects due to gravity.
A student (m = 56 kg) falls freely from rest and strikes the ground. All through the impact with the ground, he comes to rest in a time of 0.04 s.
What can you conclude about the resulting displacements?
The pressure in a traveling sound wave is given by the following equation. p = (2.1 Pa) sin ?[(1.40 m-1)x - (280 s-1)t], Find the pressure amplitude and Find the wavelength
A wave pulse travels down a slinky. The mass of the slinky is m = 0.85 kg and is initially stretched to a length L = 6.5 m. What is the speed of the wave pulse
A banked circular highway curve is designed for traffic moving at 77-km/h. The radius of the curve is 153 m. Traffic is moving along the highway at 46-km/h on a rainy day. What is the minimum coefficient of friction between tires and road that wil..
A siren has a frequency of 875 Hz when it and an observer are both at rest. The observer then starts to move and finds that the frequency he hears is 1251 Hz. What is the speed of the observer
While, entering a freeway , a car accelerates from a speed of 90 m/s at a rate of 2.17 m/s^2 for 5.50 s. Whats the cars final velocity
A charge of +8.8 micro-coulombs with a mass of 0.56 kg lies on a horizontal surface. What is the amount of the normal force on the charge
A satellite moves in a circular orbit around the Earth at a speed of 5680 m/s. Determine the period of the satellite's orbit
A cylindrical storage tank has a radius of 1.22 m. When filled to a height of 3.71 m, it holda 14 300 kg of a liquid industrial solvent.
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