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High-voltage power lines are a familiar sight throughout the country. The aluminum wire used for some of these lines has a cross-sectional area of 4.90 10-4 m2. What is the resistance of ten kilometers of this wire?
An observer in frame S standing at the origin observes two flashes of colored light separated spatially by ?x = 2980 m, Find the magnitude and direction of v.
Find the maximun angle of a slope on which a parked car would not be able to slide down. use the static coefficient of rubber on concrete(1.0)
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 19.0° below the horizontal, Find the car's position relative to the base of the cliff when the car lands in the ocean
A transverse wave on a string is described by the following wave function. y =0.085 sin((pie/12x) +(5piet)), What is the speed of propagation of this wave
A hydrogen atom initially in the ground state absorbs a photon, which excites it to the n = 3.00 state. determine the frequency of the photon
A 75 kg skydiver can be modeled as a rectangular box withdimensions of 20cm x 40 cm x 180 cm. What is the terminal speed if he falls feet first
The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981. Determine the total time the projectile was in fligh
A jeweler working awith a heated 47 g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 C, what mass of water at 25 C is needed to lower the rings temperature to 38 c.
A 0.45kg piece of putty is dropped from a height of 2.5m above a flat surface. find the magnitude of the average force exerted on the putty
A crate with mass 36.0 initially at rest on a warehouse floor is acted on by a net horizontal force of 142. Explain how far does it travel in 12s and what is its speed at that time?
When two parallel slits are illuminated with monochromatic light of wavelength 632.8 nm, What is the distance between the parallel slits
A dry cell does 7.5. J of work through chemical energy transfer 5 C between terminals of the cell. What is the electric potential between the two terminal.
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