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As in problem 80, an 89-kg man plans to tow a 102000-kg airplane along a runway by pulling horizontally on a cable attached to it. Suppose that he instead attempts the feat by pulling the cable at an angle of 8.0° above the horizontal. The coefficient of static friction between his shoes and the runway is 0.83. What is the greatest acceleration the man can give the airplane? Assume that the airplane is on wheels that turn without any frictional resistance.
According to legend, to determine whether the king's crown was made of pure gold, Archimedes measured the crown's volume by find out how much water it displaced. The density of gold is 19.3g/cm^3. If the crown's mass was 6.00 * 10^2g, what volume ..
When a large bone such as the femur is broken, the two pieces are often pulled out of alignment by the complicated combination of tension, how much mass m must be attached to the bottom pulley
High-voltage power lines are a familiar sight throughout the country. What is the resistance of ten kilometers of this wire
The largest moon of Pluto, Charon, was discovered in 1979. Charon is in a circular orbit of radius 19,600 km around Pluto, What is the total mass of the Pluto-Charon system
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
A 42-kg girl is standing on a 125-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is her velocity relative to the ice surface
A block is attached to a ceiling by a spring of force constant k. When pulled down and released, what is the force constant k of the spring
Four identical particles, each with mass m = 10-6 kg and charge Q = 10-6 C, are initially at the four corners of a square with side-length a = 0.01 m. what is the final speed of the released particle once it is very far away
An electron that has a horizontal initial speed of 4.50 x 10^6 m/s enters a region that has an electric field of 120 V/m pointing vertically upward. How long does the electron take to travel 9 cm in the horizontal direction
A 115 V electric iron draws 5.57 A of current. How much heat is developed per hour, What is the temperature of the bath
A box stands against the wall of a cylinder that is rotating. The cylinder has a radius of 30cm. What is the minimum consant speed (magnitude of linear velocity) the box must move so it doesn't slip
Consider Joule's experiment described in the insight below. Assume the mass m = 2.5 kg and the fluid is water with a volume of 1.19 L. What is the increase in the temperature of the water
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