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Your car tire is rotating at 3.9 rev/s when suddenly you press down hard on the accelerator. After traveling 180 m , the tire's rotation has increased to 6.5 rev/s . The radius of the tire is 32 cm. What is the tires angular acceleration?
A point source of light illuminates an aperture 1.96 m away. How wide is the aperture
A major leaguer hits a baseball so that it leaves the bat at a speed of 28.0 m/s and at an angle of 35.3 degrees above the horizontal. Calculate the vertical component of the baseball's velocity
Find the electric energy density between the plates of a 225-?F parallel-plate capacitor. The potential difference between the plates is 350V
A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area of 0.600m^2. How much energy does this wave carry through the window
The speed of sound in air at 20 C is 344m/s. How many milliseconds does each vibration take
In a series RCL circuit the generator is set to a frequency that is not the resonant frequency. What is the frequency of the generator
A 58 g tennis ball is served at 40 m/s. Find the de Broglie wavelength of the tennis ball
A sophomore with nothing better to do adds heat to 0.350 kg of ice at 0.00°C until it is all melted. What is the change in entropy of the water
The Earth's radius is 6370 km . There is a downward-pointing electric field in the atmosphere above the Earth's surface, What is the flux of the electric field out of the Earth, What is the charge on the Earth
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.0 MJ when the flywheel is rotating at 20,000 revolutions per minute
Carol and Robin share a house. To get to work Carol walks north 2.5{\rm km} , while Robin drives west 8.0{\rm km} . how far apart are there two workplaces
Robert has just bought a new model rocket, and is trying to measure its flight characteristics. how much work is done by the drag force on the rocket during its ascent
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