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a. What thermodynamic condition must be met for a state of equilibrium to exist?
b. Why does an alloy of eutectic composition that is cooled through the eutectic point have a microstructure consisting of alternative layers of the two solid phases?
c. Give an example of a congruent phase transformation.
d. Using the phase diagrams presented in the textbook, give examples of eutectic, eutectoid, and peritectic reactions.
A solid block is suspended from a spring scale. If the reading on the scale when the block is completely immersed in water is 34.0 N, what are the block's volume and density
Assume that the total energy E of an electron greatly exceeds its rest energy. If a photon has a wavelength equal to the de Broglie wavelength of the electron, what is the photon's energy
The bright core of a certain Seyfert galazy had a luminosity of 10^10 L. The luminosity increased by 100% in a period of 18 months. How does this compre to the diameter of the Milky Way
Suppose you are driving a car around in a circle of radius 182 ft, at a velocity which has the constant magnitude of 33 ft/s. What angle (in degrees) will the string make with the vertical
The temperature difference between the inside and the outside of a home on a cold winter day is 49°F. Express this difference on the Celsius scale.
An aluminum cylinder with radius 1.7 cm and length 17 cm is heated to 340 °C. Find the net power this cylinder radiates into a room at 24 °C
A 5.25 kg ball of clay is thrown downward from a height of 2.79m with a speed of 4.41 m/s onto a spring with k=1530 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping.
Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. In a standard treatment, 2.0 kg of beef receives 4.5 kGy of radiation in 48 s. (A) How much energy is deposited in the beef in kJ? (B) What is the a..
You have a string with a mass of 14.1 g. You stretch the string with a force of 8.63 N, giving it a length of 1.93 m. What is the wavelength of the standing wave you create in the string
It is found experimentally that the electric field in a certain region of Earth's atmosphere is directed vertically down, Find the net amount of charge contained in a cube 150 m on edge
question1a frictionless pulley has the form of a uniform solid disk of mass 4.00 and radius 23.0. a 1.80 stone is
Two Styrofoam balls with the same mass m = 7.7 10-8 kg and the same positive charge Q are suspended from the same point by insulating threads of length L = 0.92 m. The separation of the balls is d = 0.027 m. What is the charge Q?
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