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Standing at a crosswalk, you hear a frequency of 540 Hz from thesiren of an approaching ambulance. After the ambulance passes, theobserved frequency of the siren is 459 Hz.
Determine the ambulance's speed from these observations.
Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, and the gravitational constant G, What is the density of the sun
the roller-coaster car is dragged up at the highest point where it is released passing the highest point with speed of
An electron is moving in the +y direction at 4.7 x 105 m/s when it encounters a magnetic field of 2.5 T coming out of the page. What is the magnetic Force (FB) acting on the electron
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 hot-air balloon is rising upward with a constant speed of 2.50m/s. when the balloon is 3.00 m above the ground, How much time elapses before the compass hits the ground
Air at 25 oC blows over a heated steel plate with its surface maintained at 200 oC. Calculate the heat loss per hour from the top surface of the plate
a glass rod is rubbed with silk and acquires a charge of magnitude 7.50 nc. what is the change in mass of rod?also if
What is magnitude of the change in the magnetic field
problem 1 packed beds with adsorbent material are frequently used in pharmaceuti- cal industry for affinity
The radius of the loop is 550km. R=550km. Determine the minimum height above the top of the loop from which the ball must be released in order to "just" pass through the top of the loop.
A uniform electric field of magnitude 230 V/m is directed in the positive xdirection. A +15.0 µC charge moves from the origin to thepoint (x, y) = (20.0 cm, 50.0 cm). What is the change in the potential energyof the charge field system?
An airplane maintains a speed of 573 km/h relative to the air it is flying through as it makes a trip to a city 689 km away to the north. What time interval is required for the trip if the plane flies through a headwind blowing at 38.1 km/h toward t..
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