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A1.20-m-long wire has a resistance equal to0.320?. A second wire made of identical material has a length of1.90m and a mass equal to the mass of the first wire. What is the resistance of the second wire?
Consult Interactive Solution 7.10 for a review of problem-solving skills that are involved in this problem. A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates.
A particle of rest mass M, travelling at speed v in the x-direction, decays into two photons, moving in the positive and negative x-direction relative to the original particle. What are their energies
Two cars start from rest from point A on a circular track of radius r=200 m. Find the angular acceleration of the blue car in rad/sec^2
Suppose a radio station emits EM waves uniformly in all directions. What is the maximum power level of this radio station so as to avoid electrical breakdown of air at a distance of 2.0m from the antenna
Suppose you have a thin, uniform rod with a total mass of 3.00 kg and a total length of 2.00 m. By what percent- age does the moment of inertia decrease if you rotate it about a point located 20% (0.40 m) from one end, instead of at that end?
Lithium, beryllium, and mercury have work functions of 2.30eV,3.90eV, and 4.50eV respectively. Find the maximum kinetic enery for the photoelectrons in each case
Calculate the eccentricity, e, of a planet's orbit around a central star if the ratio of its gravitational potential energies at the aphelion and at the perihelion is ? = 0.175
A convex mirror has a focal length of -30.0 cm. A 15.0-cm-tall object is located 30.0 cm in front of this mirror. determine the location and size of the image
A transparent oil with index of refraction 1.16 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
A parabolic reflector brings 10% of 10^4 square meters of sunlight to bear on a 2 meter deep swimming pool that holds 100 metric tons of water for one hour daily. Assuming the pool's temp starts at 30 degrees C, how hot is it in one hour?
A 950-kg car strikes a huge spring at a speed of 20 m/s, compressing the spring 5.5 m. What is the spring stiffness constant of the spring
Steam enters a nozzle operating at steady state with p = 40 bar and T =400oC, and a velocity of 10 m/s. Determine the exit area of the nozzle
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