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you hear the sonic boom of a high speed jet plane exactly 2.90 s after it passes directly overhead in level flight. at the time you hear the boom, you see the plane at an angel of 20 degrees above the horizon. assume that the speed of sound at the altitude of the plane is 325 m/s. what is the altitude of the plane?
A particular heat engine has a useful power output of 4.80 kW and an efficiency of 25.0%. Find the energy taken in during each cycle
A person with a mass of 60 kg climbs up to a diving board 4 meters above a swimming pool. How much work does the person do
A 1.80x10^2 kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.00 m above the ground. The crane that is doing the lifting produces a steady power of 4x10^2 W. How much time does it take to lift piano.
An object with moment of inertia I1 is rotating freely (with no torque applied) with angular velocity w. What is the new angular velocity of the combined system
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. How much time passes before the ice starts to melt
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1360 Hz. What is the speed of the bird
a typical maximum acceleration for a car is about 8 m/s^2, A sports car traveling at 20m/s accelerates at this rate for 1.25 seconds
a mass m is attached to a string of length l and released when the string is horizontal, causing the mass to fall in a circular path. determine the maximum value of the tension force in the string
An artificial satellite circling the Earth completes each orbit in 130 minutes. (The radius of the Earth is 6.38 106 m. Find the altitude of the satellite
A specimen of oil having an initial volume of 600cm3 is subjected to a pressure increase of3.6×106Pa, What is the bulk modulus (in Pa) of the material
two vehicles of equal mass at a 90 degree intersection. If the momentum of vehicle A is 1.20 x 10^5 kg km/h east and the momentum of vehicle is 8.50 x 10^4 kg km/h north, what is the resulting momentum of the final mass
A 1.0- kg mass is attached to a string wrapped around a shaft of negligible mass and having a 6.0- cm radius. How far apart are the masses of the dumbbell
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