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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 bird is flying directly toward a stationary bird-watcher and emits a frequency of 1330 Hz. What is the speed of the bird
The strength of the magnetic field within a solenoid is B = 3.4 × 10-2 T, single loop is placed in the solenoid parallel to the plane of each loop in the solenoid, What is the total number of turns of the solenoid
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.270 T. find the speed of the electron and the radius of the circular path
An ultralight plane and pilot have a total mass of 150 kg. what is the net force acting on the plane and pilot
Determine the linear (tangential) acceleration of the rim of the bicycle's wheels (in the reference frame of a cyclist riding the bike).
Truck suspensions have "helper springs" that engage at high loads. When the main leaf spring is compressed by a distance y0, What is the compression of the leaf spring for a load of 5.00 x 10^5 N
A block of mass 8.4 kg is pulled along a horizontal frictionless floor by a cord, What is the magnitude of the normal force exerted on the mass by the floor
One hundred turns of (insulated) copper wire are wrapped arounda wooden cylindrical core of cross-sectional area 8.05 x10-3 m2. how much charge flows through a point in the circuit during the change
As a bar magnet moves toward a 150-turn coil, the magnetic field (which is perpendicular to the plane of the coil) changes from 0.25 T to 0.53 T in 0.3 s. what is the magnitude of the induced current in the coil
An ionized deuteron (a bound proton-neutron system with a net +e charge) passes through a velocity selector whose perpendicular magnetic Find the speed of the ion
Many people mistakenly believe that the astronauts orbiting the earth are "above gravity." Compute the acceleration because of gravity, g, for space shuttle territory, 245 kilometres above the earth's surface (dashed line in sketch). Earth's mass ..
A long, straight wire carries a 25.0 current. An electron is fired parallel to this wire with a speed of 280 in the same direction as the current, 2.30 from the wire.
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