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Sati [7]
3 years ago
15

True or false need help!

Social Studies
1 answer:
Liono4ka [1.6K]3 years ago
3 0

Answer:

False

Explanation:

They are not sealed with plastic

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How fast must an object move before its length appears to be contracted to one-half its proper length?
notsponge [240]

The object must move with the speed of \frac{\sqrt{3} }2} times to approximately seeing that it is contracted to exactly half of its actual length.

<h3>How is this calculated?</h3>

The length contraction experimented by the object as it approaches lightspeed, in meters per second, is described by Lorentz contraction formula:

\frac{L}{L'} = \sqrt{(1) - (\frac{v}{c})^{2}

Here, v is the current speed m/s

c is the speed of light in m/s

L' is the length of the object at rest in m

L is the length of the object at the current speed in m

Now we know that

\frac{L}{L'}= \frac{1}{2} and \frac{v}{c} = r then,

\frac{1}{2} = \sqrt{1 - r^{2} }\\\frac{1}{4} = 1 - r^{2}\\r^{2} = \frac{3}{4}

Hence, r = \frac{\sqrt{3} }{2}

Therefore, the answer is the object must travel at a speed of \frac{\sqrt{3} }{2} times the lightspeed to be contracted to one-half its proper length.

To know more about the Lorentz contraction formula, visit:

brainly.com/question/17407131

#SPJ4

7 0
2 years ago
John is participating in a study and is asked if he would stop and help someone whose car has broken down on the freeway. John a
Ronch [10]

Answer:

demand characteristics

Explanation:

According to my research on studies conducted by various psychologists, I can say that based on the information provided within the question John's response reflects the power of demand characteristics. This term refers to when an individual interprets a question or situation in a certain way and then unconsciously adapts their behavior or responses in order to fit that interpretation. Such as is being demonstrated by John responding yes even though he would not stop, solely because he interpreted that as being the ethical response.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

4 0
3 years ago
Both the kush and the maurya experienced a decline in their empires caused by
navik [9.2K]

Answer:

Expenditure on army and bureaucracy

Explanation:

8 0
2 years ago
Read 2 more answers
Why was the freedom of the press included as a right in both the US Constitution and the Massachusetts Constitution?
nadezda [96]

Answer: i don’t know

need help to

Explanation:

3 0
2 years ago
Which of the following increases liabilities but not assets?
4vir4ik [10]

The correct answer is B. Taking out loan to go on vacation.

Liability is termed as future sacrifices of benefits which are obliged to other entities. There are characteristics which explains what is liability.

For example, A type of borrowing from banks or from persons to improve personal income and which is being paid within the given period of time.

Liability can be based on constructive obligations or equitable obligations.

We can say that we get the asset when liability is being added to owners equity.

6 0
3 years ago
Read 2 more answers
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