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The diffusion constant for the alcohol ethanol in water is 1.24 10-9 m2/s. A cylinder has a cross-sectional area of 3.85 cm2 and a length of 1.86 cm. A difference in ethanol concentration of 1.66 kg/m3 is maintained between the ends of the cylinder. In one hour, what mass of ethanol diffuses through the cylinder?
Coulomb's Law describes the force between two charged objects, What is the magnitude and direction of the electrical force on object 2 due to Object 1
A 1.00-µF capacitor is connected to a 12.0-V battery. How much energy is stored in the capacitor
The 65.0 kg climber in the figure is supported in the "chimney" by the friction forces exerted on his shoes and back. What is the minimum normal force he must exert
A prospector finds a solid rock composed of granite(?= 2650 kg/m3)and gold. The volume of the rock is3.30multiplied by10-4m3and its mass is3.03kg
An electron enters a region of space containing a uniform 0.0000179-T magnetic field. Its speed is 151 m/s, Find the radius r of the electron\'s path
In a certain region of space, the electric potential is given by V= 6y. The potential V is given in volts, the coodinate y is given in meters. Find the direction of the electric field
A college student who was late for his physics class drove through a red traffic light, How fast did he need to drive for a Doppler shift this large
The balance wheel of a watch oscillates with angular amplitude 0.90? rad and period 0.68 s. Find the maximum angular speed of the wheel
You digitize a 10-kHz signal by sampling it at twice the highest frequency (i.e 20,000 times a second) and encoding the the intensity in 8-bits. What is the resulting data rate
If the electric field strength in air exceeds 3.0 multiplied by 106 N/C, the air becomes a conductor. Using this fact, determine the maximum amount of charge that can be carried by a metal sphere 3.1 m in radius.
A28.0-kg block is initially at rest on a horizontal surface. A horizontal force of 76.0N is required to set the block in motion, after which a horizontal force of57.0N is required to keep the block moving with constant speed.
strikes the wooden block of a ballistic pendulum, as shown. The block has a mass of 270 g. Find out the speed of the bullet/block combination immediately after the collision.
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