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A bottle of bleach is opened in a closed room where the air is perfectly still. Estimate how long it will take for the bleach molecules to diffuse through the extent of the room, assuming that the bleach bottle is in the center of the room, and the room is perfectly square, and is a 10 foot x 10 foot room. Assume a bleach molecule has a radius of .15 nm. The molecular weight of bleach (Sodium Hypochlorite NaClO) is 74.35 gms and the room temperature is 300K. Ignore convective currents.
A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon, How deep is the pool
A straight rod consists of a 1.2-cm-long piece of aluminum attached to a 2.0-cm-long piece of steel. By how much will the length of this rod change
Illustrate what was its angular acceleration (assumed constant) and what was its final angular speed in rpm?
A 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40-kg child sits on the other end. How long is the beam
Now, as both pipes vibrate at their fundamental frequencies, the beat frequency of 17 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 333 m/s.
find out the magnitude of the gravitational force exerted by one on the other.
In January from Indiana, Andromeda is high in the sky at 6pm local time. (Note that local time is about 40 minutes later than Eastern Standard Time, Where would Andromeda be at midnight local time
A tube is open only at one end. A certain harmonic produced by the tube has a frequency of 470 Hz. What is the length of the tube
One hundred k mol of a gas containing 94.4 mole% methane, 3.40% ethane, 0.60% propane, and 0.50 percent butane is to be burned with 17% excess air. Calculate the required molar flow rate of the air.
Boat sails at a rate of 5.0 m / s relative to the sea. He is aiming directly north, What will be the direction of the boat
A Ferris wheel with a radius of 14.0 m rotates at a constant rate, completing one revolution in 30.0 s. What is the apparent weight of a 60 passenger when she is at the bottom of the wheel.
The 4.83- kg weight that drives the time mechanism of a grandfather clock descends 27 cm in exactly 24 hours.
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