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A wheel is spinning at 20 rad/s. It undergoes an angular acceleration of 12rad/s 2 until it reaches an angular velocity of 371 rad/s.
A. Decides how long it took to spin up.
B. Decides how many revolutions it made while spinning up.
A 8500 kg boxcar traveling at 16.8 m/s strikes a second boxcar at rest. What is the mass of the second car
A cannonball is fired from a canon at an angle of 45 degrees to the horizontal.The cannonball's initial velocity is 40 m/s. How far will the cannonball go before it hits the ground
a 6-year-old girl standing on a toy chest throws a doll straight up with an c of 16 feet per second. the height h of
Suppose that a police car on the highway is moving to theright at 27 m/s, while the speeder is coming up from behind at aspeed of 39 m/s, both speeds being with respect to the ground. Which wave has the greater frequency
Use the worked example above to help you solve this problem. Figure a shows a simple apparatus for demonstrating resonance in a tube. Find the wavelength and the next two air-column lengths giving resonance
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 2.80 cm and the index of refraction of the polymer is n = 1.30, how thick would you build the coating?
Particle A of charge 5.00x10-4 C is at the origin, particle B of charge -5.00x10-4 C is at (3.00 m, 0) and particle C of charge 3.00x10-4 C is at (0, 2.00 m).
A skateboarder (whose mass is 57kg) is moving at 3.7m/s at thetop of a 5.1m ramp. Without pushing on the ground, she rolls downto the bottom of the ramp and up the next ramp which is 2.4m tall.There is an effective friction force equal to her weig..
A 310 turn solenoid with a length of 18.0 cm and a radius of 1.30 cm carries a current of 1.70 A. Calculate the change in the magnetic flux through the 4-turn coil during the same period
an electron in a hydrogen makes a transition between levels and emits a photon with a frequency of 6.91*10^14 hz . find is the electron jumping to higher or lower level
A man stands on the roof of a building of height 13.0and throws a rock with a velocity of magnitude 30.0 at an angle of 34.9 above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock.
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