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A simple pendulum of length 1.40 m witha bob of mass 1.10 kg has linearspeed v0 = 3.00 m/s whenthe cord makes an angle q0 = 45.0o with the vertical as shown.a) What is the speed of the bob which it is at its lowest position?b) What is smallest value that v0 could have ifthe cord is to achieve a horizontal position during themotion?c) What is the smallest value that v0 can have sothat the pendulum will not oscillate but rather will continue tomove around in a vertical circle?
a 16.0-mw helium-neon laser emits a beam of circular cross section with a diameter of 2.85 mm.a find the maximum
consider a guitar string stretching 85.6 cm between its anchored ends.the string is tuned to play middle c with a
A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. What is the average power radiated by the source
An aircraft weighing 849?N is accelerated?at 7?m/s2 for?13 seconds, at which time the aircraft launches.? How much work was done on the aircraft
An 18-gauge copper wire (diameter 1.02 mm) carries a current with a current density of 1.60×106A/m2. Calculate the drift velocity of electrons in the wire
The center of gravity of a 5 kg lower leg is 18 cm from the knee. When pivoted at the knee and allowed to swing, Find the moment of inertia of the lower leg
A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30.0° with respect to the horizontal, How much work is done by the rope on the sled
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. the
charge q1=1.4x10-8C is placed at the origin. Charges q2=-1.8x10-8C and q3=2.1x10-8C are placed at points (0.18m , 0m) and (0m , 0.24m)
Two ropes are attached to a heavy box to pull it along the floor. One rope applies a force of 438 newtons (N) in a direction due west; the other applies a force of 402N in a direction due south.
Unpolarized white light is incident on a polarizer and then falls on an analyzer whose TA (Transmission Axis) makes an angle of ?= 23.5? with the polarizer. What is the fraction of the original light transmitted through both the polarizer and analy..
A krypton laser produces a cylindrical red laser beam 3mm in diameter with 4W of power. What is the light intensity on a wall 5.0 m away from the laser.
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