If 25 kg of ice at 0°C is combined with 4 kg of steam at 100°C, what will be the final equilibrium temperature (in °C) of the system?
a. 40
b. 20
c. 60
d. 100
e. 8
b
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The apparent magnitude of a star observed from a distance of 10 pc is called _____
Fill in the blank(s) with correct word
The pressure relief valve is opened on a thin-walled cylindrical tank, with the radius-to-wall thickness ratio of 128, thereby decreasing the lon-gitudinal strain by 150 3 1026. Assume E 5 73 GPa and ? 5 0.33. The original internal pressure in the tank was approximately:
(A) 370 kPa
(B) 450 kPa
(C) 500 kPa
(D) 590 kPa
The laws of refraction and reflection are the same for sound as for light. The speed of sound in air is 340 m/s and in water it is 1510 m/s. If a sound wave approaches a plane water surface at an angle of incidence of 12.0°, what is the angle of refraction?
What will be an ideal response?
Alkyl halides are distinguished by the fact that at least one hydrogen atom in a hydrocarbon has been replaced by a(n)
a. alkyl group. b. OH group. c. halogen atom. d. oxygen atom. e. CH3 group.