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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 2.9x10-5 m/s. (a) What is the angular speed (the magnitude of the angular velocity) of this bacterial motor? (b) How long does it take themotor to make one revolution?
four vectors all have the same magnitude. vector 1 is at 30 degrees vector 2 is at 135 degrees vector 3 is at 240
A projectile is launched at an angle of 60o with respect to the horizontal from the edge of a cliff which is 100 m high. Its initial speed is 30 m/s. find the displacement vector for the motion of the projectile
A crankshaft with a diameter of 3.0 cm , rotating at 2500 rpm comes to a halt in 1.50 s, What is the tangential acceleration of a point on the surface of the crankshaft
Two points are given in polar coordinates by (r,θ) = (2.80 m,50.0°) and (r, θ) = (5.80 m, -62.0°),respectively. What is the distance between them
A block of mass 2.50 kg is pushed 2.60 m along a frictionless horizontal table by aconstant 16.0 N force directed 25.0°below the horizontal. Determine the work done by the net force on the block
A series RLC circuit with R = 43 Ohms , L = 270 mH , Find the maximum frequency of the frequency range over which the peak current will exceed half its value at resonance
A homemade capacitor is assembled by placing two 7 in pie pans 10 cm apart and connecting them to the opposite terminals of a 9 V battery. Estimate the electric field halfway between the plates
A car is traveling at 58.36 mph. The driver applies the brakes and the car decelerates at 4.25 m/s^2. What is the stopping distance in meters
Tam walks with the velocity of 1.8 m/s west. He does so while riding on a conveyor belt that moves at a velocity of 0.7 m/s west. What is Tam's velocity.
Two grapes are given equal charges and held apart at a distance of1.6 m. They experience a repulsive force of2.2 N. Find the magnitude of the charge on each grape.
A 15 kΩ resistor and a capacitor are connected in series, and then a 12.0 V potential difference is suddenly applied across them. The potential difference across the capacitor rises to 5.00 V in 1.30 μs.
A skateboarder shoots off a ramp with a velocity of 6.8 m/s, directed at an angle of 59° above the horizontal. how far is this point horizontally from the end of the ramp
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