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The four masses shown in the figure are connected by massless, rigid rods,
a) Find the coordinates of the center of gravity?
b) Find the moment of inertia about an axis that passes through mass A and is perpendicular to the page.
If you weigh 680 on the earth, what would you weigh when at surface of a neutron star that has the same mass as our sun and a diameter of 20km.
Two musicians are comparing their clarinets. The first clarinet produces a tone that is known to be 442Hz, If the second clarinet produces a higher pitched tone than the first clarinet, what is the second clarinet's frequency
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 104 m/s, What is the orbital speed of the second satellite
Consider an insulated enclosed volume of 27m^3 containing dry air at 23 degrees celsisus and 980mb, What is the specific volume and mass of the air sample
The "power cube" transformer for a portable CD player has an output of 4.5 V and 550 mA (both rms) when plugged into a 120 V/60 Hz outlet. What is the peak current in the primary coil
Draw a motion diagram for the train. Assume that the train is moving toward the right and starts to slow down at t = 0. The separation of each dot represents an elapsed time of one second.
A 85-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.4 cm in diameter
A ball of mass M = 17 kg is suspended from a vertical inextensible string of length l = 1.5 m. A bullet of mass m = M/2 traveling with a horizontal velocity v = 9sqrt(g*L) collides with the ball, What is the velocity of the ball-bullet system
Physics: Simple Harmonic Oscillator, Traveling waves are set up in a pair of long strings by a simple harmonic oscillator. The strings have identical mass densities of 5.1 grams/meter.
A lens with a focal length of 25 is placed 40 in front of a lens with a focal length of 5.0. How far from the second lens is the final image of an object infinitely far from the first lens? Is the image in part a in front of or behind the second l..
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
An indoor swimming pool of depth 2m transfers heat at a rate of 100w/m2 to the 10m of air between the pool and the roof for 1000s. What is the temperature change of the air
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