Does the cold streaming gas heat up or cool down when it enters the central cloud?

This frame from Figure 16.12 is from a supercomputer model of the formation of one of the first stars in the universe. Color indicates gas temperature: Blue and green represent cool gas (100—300 K), orange and red represent warm gas (500—3000 K), and yellow represents gas at intermediate temperatures (300—500 K). Use the information in the figure to answer the following questions.


The cold gas heats up when it enters the central cloud.

Physics & Space Science

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Low air pressure is associated with warm air temperatures.

Indicate whether the statement is true or false.

Physics & Space Science

Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at a frequency of 3.6 MHz. All radio measurements are made far from the antennas

What is the smallest angle, reckoned east of north from midway between the antennas, at which constructive interference of two radio waves occurs? (c = 3.00 × 108 m/s) A) 50° B) 55° C) 45° D) 40° E) 35°

Physics & Space Science

Conservation of Momentum: A 1200-kg cannon suddenly fires a 100-kg cannonball at 35 m/s. What is the recoil speed of the cannon? Assume that frictional forces are negligible and the cannon is fired horizontally.

A. 2.9 m/s B. 35 m/s C. 3.5 m/s D. 3.2 m/s

Physics & Space Science

Apparent weightlessness can be experienced in freely falling elevator

Indicate whether the statement is true or false

Physics & Space Science