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An unmarked police car traveling a constant 85km/h is passed by a speeder. Precisely 2.00s after the speeder passes, the police officer steps on the accelerator. If the police car accelerates uniformly at 3.00m/s2 and overtakes the speeder after accelerating for 8.00s , what was the speeder's speed?
In reaching her destination, a backpacker walks with an average velocity of 1.19m/s, due west. This avg velocity results bc she hikes for 5.7 km with an avg velocity of 2.18 m/s due west, turns around, and hikes with an avg velocity of 0.511m/s du..
in a typical Van de Graaff linear accelerator, protons are accelerated through a potential difference of 20 MV. What is their kinetic energy if they started from rest
The length of a beam increases by 1.26mm when its temperature is raised from 29.87oC to 71.49 oC. What is the length of the beam at the initial temperature
Determine the current I flowing through a solenoid, if the magnetic flux inside its core is found to be 2.60 multiply.gif 10-4 Wb.
A boy on board a cruise ship drops a 30.0 g marble into the ocean. If the resistive force proportionality constant is 0.500 kg/s, what is the terminal speed of the marble in m/s?
A 2.0x10^-9 C point charge is located at x=3 cm, Determine the force on the negatively charged object due to the positively charged object
The sound level measured in the room by a person watching a movie in a home theatre system varies from 63 dB throughout a quiet part to 92 dB throughout a loud part. In the order of how many times louder is the latter sound.
Tim and Rick both can run at a constant speed Vr and walk at the constant speed Vw, (Vw
A certain star is 14 million light-years from Earth. The intensity of the light that reaches Earth from the star is 4.00 x 10-21 W/m2. At what rate does the star radiate EM energy.
A 4 kg mass is hung from a string which is wrapped around a cylindrical pulley (a cylindrical shell). If the mass accelerates downward at 4.90 m/s2, what is the mass of pulley.
A very small object carrying -3 x 10-6 C of charge is attracted to a large, How much Kinetic Engergy does the negatively charged object gain
A grindstone of a radius 4 m is firstly spinning with a radius of 8 rad/s. The angular speed is then increased to 12 rad/s over next 4.0 seconds. Suppose that the angular acceleration is constant. What is the average angular speed of grindstone.
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