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Radar at an airport tells an air traffic controller that a light airplane is approaching at 220 km/h at 33° north of east. Instruments also tell the air traffic controller that there is a wind blowing at 42 km/h at 25° west of south. What is the velocity of the light air plane with respect to the air?
The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 294 K. Determine the temperature of the well water
A total of 2.99·106 electrons are placed on an initially uncharged wire of length 2.25 m. What is the magnitude of the acceleration of a proton placed at that point in space
A space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
The unpolarized light of intensity I(not) is passed through two polarizers with axes oriented at 30degrees from each other. What intensity of light emerges
Three equal point charges, each with charge 1.95 , are placed at the vertices of an equilateral triangle whose sides are of length 0.400 . What is an electric potential energy of the system? (Take as zero the potential energy of the three charges ..
Blocks with masses of 2 , 4 , and 6 are lined up in a row on the frictionless table. All three are pushed forward by a 56 force applied to the 2 block. How much force does the 4 block exert on the 6 block.
Treat the ball as a uniform, solid sphere, ignoring the finger holes. Illustrate what is the acceleration of the center of mass of the ball?
Consider a merry-go-round that has the form of a disc with radius 5.5 m and mass 130 kg. what is the total moment of inertia
A car starts from rest and travels for 5.0 s with a uniform acceleration of +1.8 m/s2. How fast is the car going at the end of the braking period
As a car approaching you driver lays on the horn. The horn has an actual frequency of 350Hz but you hear the horn as 390 Hz. What is the speed of the car.
The Trans-Alaskan pipeline is 1300 km long, reaching from Prudhoe Bay to the port of Valdez, and is subject to temperatures ranging from -69°C to +36°C. How can one compensate for this expansion
The legend that Benjamin Franklin flew a kite as a storm approached is only a legend - he was neither stupid nor suicidal. what is the current through the water layer
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