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If 40.7 kW is to be transmitted to consumers over two 0.107 %u2126 lines, estimate how much power is saved if the voltage is stepped up from 115 V to 1150 V and then down again, rather than simply transmitting at 115 V. Assume the transformers are each 99.5 percent efficient.
If the bullet leaves the gun at a speed of 177 m/s, and misses by 1.02 m, at illustrate what angle should the gun be aimed so as to hit the target?
A small 12.3 g plastic ball is tied to a very light 28.6 cm string that is attached to the vertical wall of a room, Find the magnitude and direction of the electric field in the room
throughout the process the mechanical device pushing the piston to compress gas is found to expend 4 kJ of energy. What is the magnitude of the heat flow between heat reservoir and the gas and in what direction does the heat flow occur.
A wheel rotating about a fixed axis has an angular position given by q = 3- 2.0t3, where q is measured in radians and t in seconds. What is angular acceleration of the wheel at t = 2.00s.
a u-tube contains mercury with a density of 13,600 kg/m^3. it is open on one end, and the other end is connected to a boiler, what is the gauge pressure at point A in the boiler
a uniform 12.0kg ladder is 4.0m long and is placed against a frictionless wall at 30 degress. find the frictionless force at the floor necessary to maintaain equilibrium
At the bottom of its path, the ball strikes a 3.80 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find out the speed of the ball just after the collision ?
What is the highest value of the magnetic force.
Calculate the energy of the electron in the ground state of double ionized lithium, which has an atomic number Z = 3
You may solve this problem using either tabulated values from the tables or constant specific heats. Calculate the rate of heat addition
Determine out the angle with respect to the horizontal (angle of deviation) of the beam as it emerges from the prism.
An empty storage tank has a volume of 140 ft3. What is the buoyant force exerted on it by the air
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