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In an experiment of specific heat there are mixed 196 g of aluminum at 107°C with 52.3 g of water at 18.6 °C.
(a) Calculate the equilibrium temperature. Find the change in entropy of
(b) aluminum and
(c) water.
Calculate the change in entropy of the system.
The following charges are located inside a submarine: 4.00, -8.00, 25.0, and -60.0. find the net electric flux through the hull of the submarine
During normal operation, a computer's hard disk spins at 7200 rpm. what is the average angular acceleration of the hard disk
a platinum resistance thermometer has resistances of 170.0 when placed in a 0degc ice bath and 244.8 when immersed in a
Describe the full annealing heat treatment for a plain carbon steel.
If the hypotenuse of a right triangle is 6.00cm long, and the opposite is 4.00. What is the angle facing the opposite
The 5.35- kg weight that drives the time mechanism of a grandfather clock descends 19 cm in exactly 24 hours. What power is delivered to the mechanism
a football is kicked at ground level with a speed of 16.6ms at an angle of 42.9 to the horizontal. how much later does
Assume that electron-hole pairs are injected into n-type GaAs (Eg = 1.42 eV, mc = O.O7m0, mv= 0.5m0,) at a rate R = 1O^23 per cm3 per second. The thermal equilibrium concentration of electrons is n0 = 10^16 cm^3. If the recombination coefficient r..
A cannon with a mass of 115 kg shoots a cannonball with a mass of 8 kg .If the speed of the cannon ball as it leaves the cannon is 185 m/s,what is the speed of the cannon at that time??(assume cannon is initially at rest,not fastened down in any way,..
A cancer patient is undergoing radiation therapy in which protons with an energy of 1.2 MeV are incident on a 0.25 Kg tumour. (a) If the patient receives an effective dose of 1.0 rem, what is the absorbed dose? (b) How many protons are absorbed by..
A standing observer perceives a train whistle to have a frequency of 300 Hz. what is the frequency of the sound waves emitted from the train
Suppose optical radiation (? = 5.60 10-7 m) is used to determine the position of an electron to within the wavelength of the light. What will be the resulting uncertainty in the electron's velocity?
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