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A tower outside the Houses of Parliament in London has a famousclock commonly referred to as Big Ben, the name of its 13-tonchiming bell. The hour hand of each clock face is 2.7 m longand has a mass of 60.0 kg. Assume the hour hand to be auniform rod attached at one end.
a) What is the torque on the clock mechanism due to the weight of one of the four hourhands when the clock strikes noon? The axis of rotation isperpendicular to a clock face and through the center of theclock.
b) What is the torque due to the weight of on hourhand about the same axis when the clock tolls 9:00 am?
Calculate the de Broglie wavelength for an alpha particle (He-e nucleus) with energy E = 4.2 GeV (which is emitted in the radioactive decay of U-238)
If the gas in a container absorbs 293 J of heat, has 106 J of work completed on it and after that does 35 J of work, what is the enhancement in the internal energy of the gas.
The length of a simple pendulum is 0.86 m and the mass of the particle (the "bob") at the end of the cable is 0.33 kg. The pendulum is pulled away from its equilibrium position by an angle of 9.0 ° and released from rest.
Calculate the smallest possible volume of a 1 F capacitor using dielectric Teflon (2.1K), and a plate thickness of 0.01 mm. Any dimension for A and d, so long as they are physically reasonable?
sunspots vary in number as a function of time exhibiting an approximately 11 year cycle. galileo made the first
A car is driving directly north on the freeway at a speed of 114 km/h and a truck is leaving the freeway driving 92 km/h in a direction that is 30° west of north
One end of a cord is fixed and a small 0.460 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m, find the tangential and radial components of acceleration
A 900 kg car traveling at an angle of 30 south ofeast at 18 m/s collides with a 750 car traveling north at 23m/s. What is the speed of the wreckage just after the collision
A 3.10-m-long, 340kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction
a single conservative force acts on a 4.90-kg particle within a system due to its interaction with the rest of the
A thin stick is placed along the x axis so that one of its ends is at x1 = 0.00 m and the other one at x2 = 1.35 m. The stick has a non-uniform mass density ?(x) = ax b, where a = 0.349 kg/m2 and b = 0.317 kg/m. What is the coordinate of the center o..
consider a thin wire bent into the shape of a ring of radius of 10 cm that carries a steady 2.0-A current
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