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Some bacteria are propelled by motors that spin hair-like flagella.A typical bacterial motor turning at a constant angular velocityhas a radius of 1.9x10-8m, and a tangential speed at therim of 2.6x10-5 m/s.
(a) What is theangular speed (the magnitude of the angular velocity) of thisbacterial motor?
(b) How long does it take the motor to make one revolution?
A railroad car of mass 2.46 multiply.gif 104 kg, is moving with a speed of 4.13 m/s. What is the speed of the four cars after the collision
A hand exerts a constant horizontal force on a block that isfree to slide on a frictionless surface. The block start from restat point A, and by the time it has travelled a distance to point B,it is travelling with a speed Vb.
A 70kg parachutist whose density is 1050 kg/m^3 is in free fall. Find the buoyant force due to the air and compare with the parachutist's weight
Atoms can be cooled using multiple laser beams. In such an experiment, the temperature of sodium atoms can be cooled to 0.1 mK. What is the rms speed of the atoms at this temperature
The resistance of a copper wire is 0.8? at 20 DC. When it is placed in an oven, its resistance is 1.2?. What is the temperature of the oven
A factory worker accidentally releases a 200 kg crate that was being held at rest at the top of a ramp that is 3.9 m long, How fast is the crate moving as it reaches the bottom of the ramp
two identical point charges q 9.20 x 10-6 c are fixed at opposite corners of a square whose sides have a length of
for all problems of this assignment consider nuclear power plant npp with pressurized water reactor pwr. reactor have
How much force acts on one surface of a rectangular bedroom wall that is 2.20 m by 3.20 m when atmospheric pressure is 1.00x 10^5 N/m^2
The driver of a car going at 68miles/h suddenly sees a truckahead at 60 m moving slowly at 23 miles/h in the samedirection. By slamming on to the brakes, the driver of thecar achieves a maximum deceleration of 5m/s^2.
what is the needed magnitude of the minimum acceleration.
Our balance is maintained, at least in part, by the endolymph fluid in the inner ear. Spinning displaces this fluid, causing dizziness. What is the linear speed of the blade tip
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