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A speed boats propeller pushes water back with a velocity of 15 m/s. The area of the propeller blades are combined 0.06 m^2. What is the net force forward on the boat from the propeller? If the propeller is tilted to shoot the water straight up (a real one cannot tilt that much) how high will the water reach?
if the frequency stamped on a tuning fork is 320hz while the measured frequency is 315hz what is the percent difference
A bolt drops from the ceiling of a moving train car that is accelerating northward at a rate of 1.81 m/s2. What is the acceleration of the bolt relative to the train car
A ball is dropped from the top of a 48.0m high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 20.0m/s . The stone and ball collide part way up. how far from the base did this ..
If the change in specific volume on melting is -9.05 x 10-5 m3 Ikg, then calculate the change of melting temperature due to change of pressure.
A Van de Graaff generator has a spherical dome of radius 25 cm. Operating in dry air, where "atmospheric breakdown" is at Emax = 3.0 · 106 N/C, obtain the maximum charge that can be held on the dome
Water flows in a vertical pipe of 0.15 m diameter at a rate of 0.25 m3/s , and has a pressure of 250 kPa at an elevation of 25 m. Determine the velocity head and pressure head at elevations of 20 m and 50 m.
The Cosmic Background Radiation Outer space is filled with a sea of photons, created in the early moments of the universe. What is the peak frequency of this radiation
The average coefficient of volume expansion for carbon tetrachloride is 5.81 multiplied by 10-4 (°C)-1. If a 48.5 gal steel container is filled completely with carbon tetrachloride when the temperature is 10.0°C, how much will spill over when the tem..
A 20.33 gram ice cube at -8.87 degrees celsius is placed in an aluminum cup whose initial temperature is 182.02 C. What is the mass in grams of the cup
A .450 H coil has an internal resistance of 35 Ω. it is connected in series with a 6.00μF capacitor in a 120 VAC 60 Hzcircuit. Find a) the reactance of the capacitor, b) the impedance of the inductor with its internal resistance, c) the current and t..
A 70-kg log falls from a height of 25 m into a lake. If thelog, the lake, and the air are all at 300K, find the change inentropy of the Universe for this process
A gas in a cylinder with a piston that slides freely within is adiabatically expanded from 1.5 to 1.7 m3. by what amount did the internal energy of the gas change during this expansion
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