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An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, each of which is 54.0 m long and has a resistance of 0.104 ? per 300 m.
(a) Find the potential difference at the customer's house for a load current of 104 A.
V
(b) For this load current, find the power delivered to the customer.
kW
A 430g football is lying on the ground, then is kicked and is moving at 25.00 m/s. If the period of the impact was 0.001 s, what was the average force on the ball.
Suppose an electron is accelerated from rest through a difference in potential of V = 4.6 V. Find the speed of the electron after the collision
A proton and an electron have the same wavelength. Which particle is moving faster and which possesses more kinetic energy
A pencil is held perpendicular to the optical axis of a concave spherical mirror. The pencil is 81 cm from the center of the mirror, What is the magnification of the pencil's image
Multiple-Concept Example 11 reviews the concepts that are important in this problem. What is the radius of a hydrogen-filled balloon that would carry a load of 4390 N
Two loudspeakers are placed above and below each other and driven by the same source at a frequency of 4.50x10^2 Hz. An observer is in front of the speakers (to the right) at point O.
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 284.0 Hz. The tuner hears 5.0 beats per second. What was the original frequency of the untuned string
a 26.5 kg boy slides down a steep slide at a water park that is 10.9 m long and angled 75 degrees above the ground. what is the magnitude of the boys acceleration as he travels down the slide
Consider a particle moving in an elliptical orbit in an inverse square law central force field. What is the eccentricity of the orbit
How many conduction electrons are there in a 3.50 mm diameter gold wire that is 50.0 cm long
While rearranging a dorm room, a student does 400 J of work in moving a desk 2.0 m. What was the magnitude of the applied horizontal force
A mass m slides without friction on a 1-dimensional track. The mass is moving from left to right with initial velocity v0. Determine the position where the mass will come to rest
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