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An electric power station is producing 1.4 x 10+3 W of power that is to be sent to a small town placed 11 kilometer away. Each of the two wires that comprise the transmission line has a resistance per kilometer of length of 5 x10-2 Ohms /km. Determine the power lost in heating the wires if the voltage is stepped up from 130 V to 1100 V using an ideal transformer.
Watts
Illustrate what is the speed of the three coupled cars after the collision? How much kinetic energy is lost in the collision?
A light ray in the core (n = 1.40) of a cylindrical optical fibretravels at an angle θ1= 49.0 degrees with respect to the axisof the fibre. A ray is transmitted through the cladding (n = 1.20)and into the air. What angle θ2 does the exiting ray make ..
Calculate both absolute and relative pressure on the bottom of the tank if the meniscus (mercury surface) of the leg opening in the open air is a / 100 mm above the other b / 100 mm below the other.
A student on a piano stool is rotating freely with an angularspeed of 3.05 rev/s. How far are the masses from the axis of rotation
Three point charges are on the x axis: q1 is at the origin, q2 is at x = 4.91 m, and q3 is at x = 6.21 m. Find the electrostatic potential energy of this system of charges if q1 = q2 = q3 = 1.55 C.
A metal disk rotates on an axis through its center (I = 0.2 kg·m2) with angular velocity -3.3 radians/s, What is the resulting angular acceleration of the disk
If we make the approximation that the Earth's atmosphere is isothermal, with T=290K, what is the mass of the Earth's atmosphere. What is the ratio of the mass of Earth's atmosphere to the total mass of the Earth
Tarzan, who weighs 688 N, swings from a cliff at the end of aconvenint vine that is 18m long. From the top of the cliff tothe bottom of the swing, at what angle with the vertical does it break
You place an ice cube in a microwave oven. If it requires 32,220 J to melt the ice cube and the oven delivers 97 W of power to the ice cube
A wire carries a steady current of 2.20 A. A straight section of the wire is 0.750 m long, what is the magnetic force on the section of wire
Two children with masses of 24 and 31 kg are sitting on a balanced seesaw. If the lighter child is sitting 3 m from the center, where is the heavier child sitting
What was the angle of the hill. what is the current in the circuit when four lamps are turned on.
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