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An airplane have airspeed of 162 km/h and an apparent heading due south. If a 45.0 km/h wind blows from the southeast, then find the ground speed of the airplane and its heading?
After the Sun exhausts its nuclear fuel, its ultimate fate will be to collapse to a white dwarf state. Calculate the surface free-fall acceleration, units in m/s2
A 1.10 kg mass is at the center of a uniform spherical shell of mass 1.09 1020 kg and radius 1.05 106 m. Find the resultant gravitational force on the mass
A pipe is open at both ends. The pipe has resonant frequencies of 528 Hz and 660Hz (among others). Find two possible values for the length of the pipe
Two carts are put back to back on a track. cart A has a spring-loaded piston; cart B which has twice the inertial mass of cart A is entirely passive. when the piston is released, it pushed against cart B and the carts move apart. how do the magnit..
A motor has an internal resistance of 12 ohms. When running, the motor has a back emf of 30 V and draws a current of 4.0 A. What is the supply voltage in this case
An electron traveling at 745 m/s enters a1.7 T magnetic field. The angle between the velocity and the field is 88 degree. Evaluate the radius of the resulting circular path
A cube of solid steel has a volume of 1.01m^3 at 21.4 deg Celsius. What temp change is required to produce a 104cm^3 increase in volume of the cube?
a wooden carving has 1/2 g of carbon in it and the 14C decay rate has been measured to be 4 decays/min. how old is the carving
A space vehicle is traveling at 5900 km/h relative to the Earth when the exhausted rocket motor is disengaged and sent backward with a speed of 99 km/h relative to the command module. The mass of the motor is four times the mass of the module. What i..
X-ray pulses from Cygnus X-1,a celestial x- ray source, have been recorded during high- altituderocket flights. The signals can be interpreted as originating whena blob of ion- ized matter orbits a black hole with a period of5.25 ms. I
air that initially occupies 0.49 m3 at a gauge pressure of 63 kpa is expanded isothermally to a pressure of 101.3 kpa
Heavy rains have flooded your professor's basement to a depth of 6 cm. This basement is 12 m by 10 m in area. You have a hose of diameter 1.7 cm and can run the hose from the water in the basement
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