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According to the Guinness Book of World Records, the longest home run ever measured was hit by Roy "Dizzy" Carlyle in a minor league game. The ball traveled 188 (618) before landing on the ground outside the ballpark. Assuming the ball's initial velocity was 60 above the horizontal and ignoring air resistance, what did the initial speed of the ball need to be to produce such a home run if the ball was hit at a point 0.9 (3.0) above ground level? Assume that the ground was perfectly flat.
A glass is half-full of water, with a layer of oil (n = 1.50) floating on top. Determine the critical angle for the oil-water interface
The side-view mirror of an automobile hasa radius of curvature of 11.5 cm. How far is the object from the mirror
Three thin rods each of length L are arranged in invertedU. The two rods on the arms of the u each have mass M; Where is the center of the assembly
A rocket with initial mass of 7.50×103 kg is fired in the vertical direction. Its exhaust gases are ejected at the rate of 4.50×101 kg/s with a relative velocity of 2.200×103 m/s. What is the initial acceleration of the rocket
Let the x axis be parallel to the ground, +y direction be vertically upward, and take as an origin the point on the ground directly below the top of the ramp.
A cart for hauling ore out of a gold mine has a mass of 427 kg, including its load. Find the work that the donkey performs on the cart during this process
A microscope uses beams of protons instead of photons/electrons. What wavelength would the beam of protons have if their momentum was acquired from a potential drop of 100 volts? (The answer is 2.87*10^-10 cm, but I don't know how to get there
A spherical balloon has a radius of 7.35 m and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 930 kg? Neglect the buoyant force on the cargo volume itself?
Two satelities S1 and S2 revolve round a planet in coplanar circular orbits in the same sense. Their periods of revoluions are 1h and 8h respectively. The radius of the orbit of S1 is 10^4km.
Its thermal conductivity is 7.50×10?2W/(m?K) ; If the temperature difference between opposite faces is 84.5?C, how much heat flows through the slab in 1 day
You are given the job of evaluating potential power line systems. What percentage of the power would be dissipated in the low-voltage power line
An engine absorbs 1.69 kJ from a hot reservoir at 277 °C and expels 1.24 kJ to a cold reservoir at 27 °C in each cycle. What is the power output of the engine if each cycle lasts 0.298 s
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