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Two separate strings are attached to a spherical bob having a mass of 300 grams and to a central vertical rod, as shown in the side view below. The central rod is turned such that the revolving bob travels with a constant speed in an horizontal circle having a radius of 10 cm. While the system is rotating, the strings each make an angle of 30o with the horizontal, with one string above horizontal and the other below. If the period of revolution of the bob is 0.30 seconds, determine the magnitude of the tension in each string. That is, compute FT1 and FT2.
A 5.5 ohm resistor, a 11.3 ohm resistor and a 11 ohm resistor are connected in series with a 36 V battery. If the resistors are instead connected in parallel across the battery, what is the equivalent resistance
A skin diver is 1.8 m below the surface of a lake. A bird flies overhead 7.6 m above the surface of the lake. how far above the diver does it appear to be
An iron bolt of mass 75.0 gram hangs from a string 30.1 centimeter long. The top end of the string is fixed. Evaluate the magnetic force on the bolt
A mass of 1.61kg stretches a vertical spring 0.31m. If the spring is stretched an additional 0.132m and released, how long does it take to reach (new) equilibrium position again.
One cylinder in the diesel engine of a truck has an initial volume of 600cm^3. air is admitted into the cylinder at 30 degrees C and a pressure of 1.0 atm. the piston rod then does 400J of work to rapidly compress the air. what are its final temperat..
W hat is the ratio of an amplitude of the damped oscillations
A 70 kilogram guy can walk up the 2109 steps to the top floor (440 meter high) of the Sears Tower in 20 minute. Compute how much power must this guy generate to do that
A 9.66 × 1014 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2.05 × 108 m/s. The wavelength of the wave in vacuum is closest to:
A hydraulic jack has an input piston area of 4.5 cm^2 and an output piston area of 21 cm^2. what force must be applied to the input piston in order to raise a load of 850 N
A small block of mass m is kept on a long plank of same mass. Ground is smooth and coefficient of friction between block and plank is 0.5. At t=0 initial velocity of 20 m/s is given to the system. At t=1sec plank is suddenly hinged such that it co..
What is magnitude of the momentum
A 2.5-mC charge is on the y-axis at y=3.0 m and a 6.3-mC charge is on the x-axis at x=3.0 m. What is the direction of the electric potential at the origin
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