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An ambulance with a siren emitting a whine at 1600 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s. After being passed, the cyclist hears a frequency of 1560 Hz. Use 343 m/s for the speed of sound in air. How fast is the ambulance moving?
One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. What is the mass of the heaviest rock that, in perfectly still water, won't sink the plastic boat
The .50 kg box shown below is sliding with an unknown initial velocity before it slides down the incline and then collides with a mass less spring of spring constant 4.0 N/m, what was the initial velocity of the box
a certain second-order reaction has a rate constant of 1.10times10-3 at 27 and an initial half-life of 226. what is
(a) Calculate the index of refraction of the polymer if the refracted angle is 26 degrees. (b) Calculate the critical angle of the polymer in air. (c) Calculate the speed of light in the polymer.
An object has a velocity 0(t) = (3.00 m/s) + (1.00 m/s) at time t = 0.00 s. The acceleration of the object is (t) = (2.00 m/s3)t + (1.00 m/s4)t2 . If the object is located at 0(t) = (1.00 m) + (-1.00 m) at time t = 0.00 s.
During a workout, the football players at Rutgers State University ran up the stadium stairs at a steady pace in 58 s. estimate the average power output on the way up
A cube of ice is taken from the freezer at -7.7°C and placed in a99g aluminum calorimeter filled with297g of water at room temperature of 20°C. What was the mass of the ice cube
The two plates of a capacitor hold +2510 uC and -2510 uC of charge, respectively, evaluate the capacitance
A mirror with a focal length 20 cm has a 4.0 cm tall object placed 100 cm in front of it. What is the position of the image?
A 560 turn solenoid, 25 cm long, has a diameter of 3.0 cm. A short 18 turn coil is wound tightly around the center of the solenoid. what will be the induced emf magnitude in the short coil during this time
an electron, proton and an alfa particle, accelerated trough the same potential difference, enter a region of uniform magnetiv field, what are the radii of the electron and alfa particle path
A wire that is carrying a current is placed in a uniform magnetic field pointing out of the page. What direction does the force on the wire point
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