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A traffic light of mass m1 hangs from the end of a beam of length L and mass m2, which is supported at an angle θ away from the vertical by a freely pivoting hinge at its bottom-most point and by a string pulling precisely horizontally on the beam at a distance 3/4 L from the hinge as measured along the beam. Note that in supporting the beam, the hinge has to supply a force with components in both the horizontal and vertical directions. What is the tension in the horizontal string in terms of m1, m2, g, L, and ??
Particle track detectors are used to measure the speed of particles if the lifetime of the particle is known. Particle X has a lifetime of 256.2 ps. What is the average speed of the particles in terms of the speed of light
If the initial velocity of the glider is 0.5 m/s and the final velocity 1.3 m/s, then obtain how much energy is loss due to friction
A projectile is launched at an angle of 34.9 degrees above the horizontal and lands at the same level from which it was launched 2.07 seconds later. Find the magnitude of the initial velocity
Two very small spheres are initially neutral and seperated by a distance of 0.6m. what is the magnitude of the electrostatic force that acts on each sphere
A guitar string by a mass of 12 g is 80 cm long and attached to a guitar at two points separated with 71 cm. What tension should the guitar string have so that its fundamental note is 256 Hz?
How much work is completed on the box by the applied force
9.0 volts are sent into a transformer with a 10 coil primary loop and a 30 coil secondary loop. What is the voltage leaving the secondary loop
A capacitor has a capacitance of 2.74 10-8 F. In the charging process, electrons are removed from one plate, how many electrons have been transferred
In the ideal Atwood aparatus in which, m1 = 2.0 kg sits on a 20 degree incline plane . What is m2 if both masses are at rest? How about if both are moving at contant velocity?
the membrane that surrounds a certain type of living cell has a surface area of 4.8 x 10-9 m2 and a thickness of 1.6 x
A nonuniform, horizontal bar of mass 3.43 is supported by two massless wires against gravity. The left wire makes an angle 36.6 , with the horizontal, and the right wire makes an angle 62.9 .
Katie and Emily are riding on a circular merry-go-round that has a radius of 5m. Katie is on a horse that is 2.5m from the center of merry-go-round and Emily is on a tiger that is 4.5 m from the center of the merry-go-round. What is Katie's tangen..
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