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A source of sound having a frequency of 330 Hz is moving at 25m/s. If the speed of sound in air is 340 m/s what is the frequency of sound heard by (a) someone in front of the moving source; (b)someone behind the moving source?
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
calculate a? timesb? ?c? for the three vectors a? with magnitude a 5.02 and angle ?a 25.6? measured in the sense from
A weather vane initially at rest has a moment of inertia of 0.125 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
can a photon and an electron of the same momentum have the same wavelengths? calculate their wavelengths if the two
A jet of water squirts out horizontally from a very small hole nearthe bottom of a storage tank. what is the water level in the storage tank
A 775-g object undergoes an acceleration given by = (2.00 ? + 5.00 ?) m/s , find the resultant force acting on the object
A uniform cylindrical can rolls up a slope at an initial linearvelocity of 1.5m/s. Assuming μk = 0.106 and θ=11.0o, how high up the slope will the can roll
A 3.0 kg block of aluminum isheated from 20°C to 90°C at atmospheric pressure. Find the work done by the aluminum
A flashlight on the bottom of a 3.70 m deep swimming pool sends a ray upward at an angle, What angle (in air) does the emerging ray make with the water's surface
A diffraction grating produces a first-order bright fringethat is 0.0824 m away from the centralbright fringe on a flat screen. evaluate the wavelength of the light shining on the grating
the counting rate from a radioactive source is 8000 countss at time t0 while 10 mins later the rate is 1000 countss.a
A person on a rocket traveling at 0.50c (with respect to the Earth) observes a meteor come from behind and pass her at a speed she measures as 0.50c
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