A 100 gram glass container contains 200 grams of water and 100 grams of ice all at 0A 200 gram piece of lead at 100is added to the water and ice in the container. What is the final temperature of the system? (specific heat of ice = 2,000 J/kg specific heat of water = 4,186 J/kg heat of fusion of water = 333.7 kJ/kg, specific heat of glass = 837.2 J/km specific heat of lead = 127.7 J/km

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A. 1.85

B. 2.04

C. 2.86

D. 3.43

E. 4.01

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A. 1.85

Physics & Space Science

A two-shell-eight-tube-pass heat exchanger condenses 3 kg/s of ammonia at 45ºC using 65 kg/s of water at 20ºC. If the ammonia enters as saturated vapor, leaves as saturated liquid, and has a heat of vaporization of 1078 kJ/kg, determine (a) outlet water temperature and (b) heat exchanger effectiveness.

What will be an ideal response?

A red dwarf can use all of its hydrogen to prolong its life on the main sequence of a Hertzsprung-Russell diagram

Indicate whether the statement is true or false

Two-Source Interference of Sound: Two loudspeakers placed 6.00 m apart are driven in phase by an audio oscillator having a frequency range from 1908 Hz to 2471 Hz. A point P is located 4.70 m from one loudspeaker and 3.60 m from the other speaker. At what frequency of the oscillator does the sound reaching point P interfere constructively? The speed of sound is 344 m/s.

A. 2190 Hz B. 2420 Hz C. 2110 Hz D. 2340 Hz E. 2270 Hz

An ideal monatomic gas undergoes a reversible expansion to 1.5 times its original volume. In which of these processes does the gas have the largest loss of internal energy?

A) at constant pressure B) if the pressure increases in proportion to the volume C) if the pressure decreases in proportion to the volume D) at constant temperature E) adiabatically