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1/ Explain the formation of beats by the superposition of sounds of two closely spaced frequencies.
2/ Explain the increase or decrease in detected frequency due to the Doppler effect, with either source and/or listener moving.
3/ Explain why a different Doppler effect formula applies for electromagnetic waves; use that formula.
4/ Explain the characteristics of supersonic motion and the formation of shock waves.5/ Use the expression relating shock cone half angle to the Mach number.
A cube of ice is taken from the freezer at -9.5?Cand placed in a 95-g aluminum calorimeter filled with 310g of water at room temperature of20.0 ?C. What was the mass of the ice cube
A member of an aircraft maintence crew wears protective earplugs that reduce the sound intensity by a factor of 350. What sound intensity level would the crew member experience
Light of wavelength 189 nm shines on a metal surface. 3.94 eV is required to eject an electron. What is the cutoff wavelength for this metal
A positively charged particle of mass 6.20 multiply.gif 10-8 kg is traveling due east with a speed of 50 m/s, What is the magnitude of the magnetic force acting on the particle
A 2.80-kg block starts from rest at the top of a 30.0° incline and slides a distance of 2.10 m down the incline in 1.20 s. Find the magnitude of the acceleration of the block.
Determine the normal force exerted by the road on the car, the normal force exerted by the car on the 73-kg driver, and the car speed at which the normal force on driver equals zero.
A 15 kg lawn mower is pushed with a constant force of 30.0 N at an angle of 37.0 degrees. What is the acceleration of the lawn mower
When a nerve cell depolarizes, charge is transferred across the cell membrane, changing the potential difference. For a typical nerve cell, 9.0 pC of charge flows in a time of 0.50ms . 1. What is the average current? Express your answer to two sig..
An insulated Thermos contains 119 cm3 of hot coffee at 64 °C. You put a 12g ice cube at its melting point to cool the coffee. By how a lot of degrees have your coffee cooled once the ice has melted and equilibrium is reached.
what is the magnitude of the electric field strength E such that an electron, What elecric field strength E is required if the electron is replaced by a proton
A person exerts a horizontal force of F = 179N in the test apparatus shown in the drawing. (h = 0.33 m.) Determine the horizontal force M that his flexor muscle exerts on his forearm.
A distant galaxy is simultaneously rotating and receding from the earth. As drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.8 x 10^6 m/s.
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