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A wheel rotating about a fixed axis has an angular position givenby θ = 3 - 2t3, where θ is measured in radiansand t in seconds. What is the angular acceleration of the wheelwhen t = 2.0 seconds?
Note down that since each oscillator is attached to two "springs", and each "spring" is half the length of the interatomic bond, the effective interatomic spring stiffness for one of these oscillators is times estimated value given above.
copper has 8.5 x 10^28 electrons per cubic meter. a 12-gauge copper wire is 25.0cm in length and 2.05mm in diameter. what is the average drift speed of the electrons along the wire
An energy-efficient lightbulb, taking in 24.0 W of power, can produce the same level of brightness as a conventional lightbulb operating at power 100 W. The lifetime of the energy-efficient bulb is 10 000 h and its purchase price is $4.20, whereas..
Suppose that 2.8 moles of an ideal diatomic gas has a temperature of 1003 K, and that each molecule has a mass 2.32 Ã* 10^-26 kg, What is the internal energy of the gas
What hormones are hypersecreted causing hyperglycemia and hypertension? What is the cause and what physical factor allow to rule out thyroid problem.
driving along an interstate highway at 55 mph you see a car on a parallel highway coming toward you with a relative
For a damped oscillator with a mass of 170g, the spring constant 92 N/m and a damping coefficient of 55g/s, what is the ratio of amplitude of the damped oscillations to the initial amplitude at the end of 22 cycles.
Establish angles subtended by the moon and the sun
You have been given 1.752 g of copper from which you are to fashion a wire whose resistance is 2.519 ohms. What will be the density of the wire you fashion
A rifle with a weight of 40 N fires a 4.5-g bullet with a speed of 230 m/s. Find the recoil speed of the rifle
An archaeologist found a fragment bone of animal. It has an activity per gram of carbon that is 25% that of an equivalent sample of carbon from a similar living animal
A flowerpot falls from the ledge of an apartment building. A person in an apartment below, coincidentlly holding a stopwatch, notices it takes 0.7s for the pot to fall past his window, which is 18m high.
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