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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 80.0 m long and has a resistance of 0.110 ? per 300 m.
(a) Find the potential difference at the customer's house for a load current of 109 A. V
(b) For this load current, find the power delivered to the customer. kW
A hot ( ) lump of metal has a mass of 250g and a specific heat of 0.25 . John drops the metal into a 500g calorimeter containing 75g of water at . The calorimeter is constructed of a material that has a specific heat of 0.10 . When equilibrium is ..
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
The human eye is able to detect as little as 2.35 × 10-18 J of green light of wavelength 510 nm. Calculate the minimum number of photons of green light
What is an acceleration of the particle at the instant
The spheres are touched together and are then returned to their original separation d. Illustrate what is the force between them.
A wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite charge on the car. If a car has a 1000 kg mass and the ball is to be able to lift it from a distance of 1.00 m: (a) What minimum ..
Find out the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 35.0 below the horizontal.
An electron is released from rest at the negative plate between two 10.0 cm long parallel plates separated by 1.00 cm, What is the electron's velocity when it strikes the other plate
Assume that each cubic centimeter of water has a mass of exactly 1.00 g. What is the mass of one cubic meter of water
After 3.1 ms has elapsed, how much charge remains on the 3.00-µF capacitor, What is the current in the resistor at this time
The frequency of an opera singer is 450 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer who is running down the road towards the opera singer with a speed 25.0 m/s.
(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 6.00 cm2? (b) Find the maximum charge if bakelite is used between the plates instead of air.
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