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garri49 [273]
3 years ago
8

The first step in a star formation is ______?

Physics
2 answers:
Mariana [72]3 years ago
8 0
First look at the star
AleksandrR [38]3 years ago
8 0
Initial collapse of an interstellar cloud
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Which of the following is an example of an allocation decision?|
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Answer:

The answer is D- Coal is set aside to burn as heating fuel

Explanation:

Allocation decisions set aside resources for a specific purpose.

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When temperature decreases but actual water vapor content remains the same, what happens to relative humidity?
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Answer:

d. Relative humidity increases.

Explanation:

The expression of relative humidity in terms of absolute humidity, absolute pressure and saturation pression at measured temperature is:

\phi = \frac{\omega \cdot P}{(0.622+\omega)\cdot P_{sat}}

When temperature decreases, the saturation pressure decreases also and, consequently, relative humidity increases. Therefore, the right answer is option D.

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1. A pendulum has a period of 3 seconds. What's its frequency? 2. A pendulum has a frequency of 0.25 Hz. What's its period? 3. A
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Answer:

(1) 0.333 Hz

(2) 4 sec

(3) 2 sec, 0.5 Hz

Explanation:

(1) We have given time period of pendulum is 3 sec

So T = 3 sec

Frequency will be equal to f=\frac{1}{T}=\frac{1}{3}=0.333Hz

(2) Frequency of the pendulum is given f = 0.25 Hz

Time period is equal to T=\frac{1}{f}=\frac{1}{0.25}=4sec

(3) It is given that a pendulum makes 10 back and forth swings in 20 seconds

So time taken to complete 1 back and forth swings = =\frac{20}{10}=2sec

So time period T = 2 sec

Frequency will be equal to f=\frac{1}{T}=\frac{1}{2}=0.5Hz

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While traveling along a highway a driver slows from 24 m/sec to 15 m/sec in 12 seconds. What is the
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24-15=9 m/s slower in 12 seconds. So 9/12 m/s² slower. Therefore the acceleration is -0,75 m/s²
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There are three ways to give an object a static charge. They are friction, conduction and induction. Two pieces of cellophane ta
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The tape is charged by friction and her hand has an induced opposite charge. They therefore attract.

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