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A pair of power transmission lines each have a 1.90 resistance and carry 700 A over 9.8 km. Assume that the rms input voltage is 42 kV.
(a) Calculate the voltage at the other end.
(b) Calculate the power input.
(c) Calculate the power loss in the lines.
(d) Calculate the power output.
A 15-uF capacitor is connected to a 50-V battery and becomes fullycharged. The battery is removed and a slab of dielectric that completely fills the spacebetween the plates is inserted. If the dielectric has a dielectric constant of 5.0:
A spherical surface completely surrounds a collection of charges. Find the electric flux (with its sign) through the surface if the collection consists of (a) a single +1.90 × 10-6 C charge, (b) a single -2.40 × 10-6 C charge, and (c) both of the ..
Jill of the Jungle swings on a vine 6.9 m long. What is the tension in the vine if Jill, whose mass is 63 kg, is moving at 2.4 m/s when the vine is vertical
An air-filled parallel-plate capacitor has plates of area 2.20 cm2 separated by 0.50 mm. What is the magnitude of the uniform electric field between the plates
a road rises 1ft for every 100ft it travels horizontally it is said to have a 15 grade. if the road you are traveling on has a 5 % grade what is the angle of the road above the horizontal
A 80 kg diver steps off a 13 m tower and drops from rest straight down into the water. If he comes to rest 4.1 m beneath the surface, find out the average resistance force exerted on him by the water.
a 100g marble (modeled as a solid sphere with radius 2cm) rolls without slipping down a ramp. How tall is the ramp
A cat drops from a shelf 4.5ft above the floor and lands on all four feet. His legs bring him to a stop in a distance of 12cm. Calculate how long it takes him to stop
A man doing a slow push-up is approximately in static equilibrium. His body is horizontal, with his weight of 763 N supported by his hands and feet, how far from the shoulders is the man's center of gravity
Find the threshold energy that an incident neutron must have when striking an alpha particle to produce a deuterium and tritium nucleus
A piece of aluminum pipe has an inner radius of r_a = 2.0 cm and an outer radius of r_b = 2.2 com. Calculate the resistance of a 1 m long piece of pipe
An electric vehicle starts from rest and accelerates at a rate of 2 m/s2 in a straight line until it reaches a speed of 25.00 m/s. The vehicle then slows at a constant rate of 1.1 m/s2 until it stops. (1) How much time elapses from start to stop? ..
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