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A wire is made from 0.0025 m diameter copper wire and has 6.0 m in length. What is the resistance of this wire? If the wire is connected to 75 V power supply what is current across the wire? How much electrical energy is consumed across the wire in 5 minutes? Pcu= 1.68 e-8
You have a string with a mass of 14.1 g. You stretch the string with a force of 8.63 N, giving it a length of 1.93 m. What is the wavelength of the standing wave you create in the string
a helicopter moves in such a way that its position at any time is described by the horizontal and vertical equations x
A solid sphere and a shell sphere roll down an incline. Which one gets to the bottom first and why
A 1.65 nC charge with a mass of 1.5 x 10-15 kg experiences an acceleration of 6.33 x 107 m/s2 in an electric field. What is the magnitude of the electric field
A 20-kg block, m1, with a pulley attached slides along a frictionless ledge. calculate the tension in the connecting string
A sealed tank containing seawater to a height of 11.1 also contains air above the water at a gauge pressure of 2.95. Water flows out from the bottom through a small hole.
Light is incident on a piece of flint glass (n=1.66) from the air in such a way that the angle of refraction is exactly half the angle of incidence. What are the values of the angles of incidence
during the first 18 minutes of a 1 hour trip a car has an average speed of 11 ms. what must the average speed of the
Determine the x and y components of the following three vectors in the xy plane. A 15-m displacement vector that makes an angle of 23° clockwisefrom the +y direction.
A wheel initially has an angular velocity of 18 rad/s. It has a constant angular acceleration of 2.0 rad/s2 and is slowing at first. What time elapses before its angular velocity is18 rad/s in the direction opposite to its initial angular velocity
A metal sphere A has charge Q. Two other spheres, B and C, are identical to A except they have zero net charge. How much charge is on each sphere
A small blob of putty of mass m = 90.0 g falls from the ceiling and lands on the outer rim of a turntable of radius R = 15.0 cm, find the postcollision angular speed of the turntable-putty
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