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Sound travels with speed 130 m/s and frequency of 40 Hz, what is the travel distance ?
the starter motor of a car engine draws an electric current of 20.0 a from the battery. the copper wire to the motor is
A wind turbine with a rotor diameter of 50 m is rated at Y kW at a hub height wind speed of m/s. It has a cut-in wind speed of m/s and a cut-out speed of m/s.
An asteroid is discovered to have a tiny moon that orbits it in a circular path at a distance of 115 km and with a period of 49.0 h. Find the escape velocity from the asteroid
An advertisement claims that a centrifuge takes up only 0.127m of bench space but can produce a radial acceleration of 3000g at 5000 rev/min. Calculate the required radius of the centrifuge
A 860 Newton crate rests on the ground. It takes 756 Joule to move it at a constant speed 4.2 meter along the floor against a friction force of180 Newton. Determine how much work is required to move it
A harmonic wave has a frequency of v = 40 Hz and a wavelength of 7m. The wave obtains a maximum displacement of Ym = 1.7m, How fast is the wave traveling
At the Paris Auto Show this week, a concept car by Lamborghini called "Sesto Elemento" (Sixth Element) was being shown. Calculate the average power during the acceleration
The frequency of light reaching Earth from a particular galaxy is 25.0% lower than the frequency the light had when it was emitted. What is the speed of this galaxy relative to the Earth?
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 671 m/s. compute the horizontal distance between the end of the rifle
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a stream-powered catapult. the thrust of its engine is 2.3 x 10^5 N . in being launched from rest it moves through a distance of 87 m and has kinetic energy of 4.5..
three identical point charges q are placed at each of three corners of a square of side l. find the magnitude and
A wheel rolls 5 revolutions on a horizontal surface withoutslipping. If the center of the wheel moves 3.2 m, what is the radius of the wheel
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