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3 years ago

The key factor defining a democracy is that the government is by the

Social Studies

1 answer:

larisa86 [58]3 years ago

5 0

Just search this up on google your welcome

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What are partly dry glad grasslands that surround many deserts

Basile [38]

Savannas are a dry grassland surrounded by many deserts.

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3 years ago

Suppose you find a rock that contains 10 micrograms of radioactive potassium-40, which has a half-life of 1.25 billion years. By

attashe74 [19]

Answer:

The rock is 3.75 billion years ago.

Explanation:

Given that:

Half life = 1.25 billion years

1 billion years = 10⁹ years

So,

Half life = 1.25 × 10⁹ years

$t_{1/2}=\frac {ln\ 2}{k}$

Where, k is rate constant

So,

$k=\frac {ln\ 2}{t_{1/2}}$

$k=\frac {ln\ 2}{1.25\times 10^9}\ year^{-1}$

The rate constant, k = 5.5452 × 10⁻¹⁰ years⁻¹

Initial amount [A₀] = 80 micrograms

Final amount $[A_t]$ = 10 micrograms

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

So,

$10=80\times e^{-5.5452\times 10^{-10}\times t}$

$80e^{-5.5452\times \:10^{-10}x}=10$

$\frac{80e^{-5.5452\times \:10^{-10}x}}{80}=\frac{10}{80}$

$\ln \left(e^{-5.5452\times \:10^{-10}x}\right)=\ln \left(\frac{1}{8}\right)$

$x=\frac{10^{10}\times \:3\ln \left(2\right)}{5.5452}=3.75\times 10^9$

So,

<u>The rock is 3.75 billion years ago.</u>

8 0

3 years ago

Caroline abides by a very strict moral code and feels very guilty if she does the slightest thing wrong, such as forgetting to r

tigry1 [53]

She has a very strong superego. In his theory of psychic entities, Sigmund Freud divided the psychic consciousness into 3 antagonistic levels that generate conflicts between them, and the resolution of that conflict is what governs our behavior. These levels are: The Id which is governed by the pleasure principle, the ego that is governed by the reality principle, and the superego that is governed by the principle of morality.

I hope my answer can help you.

4 0

4 years ago

Mrs. Smith's husband suffered a stroke, one result being that he very rarely spoke. Mrs. Smith consulted a behavior therapist an

MAXImum [283]

Answer:

Yes

Explanation:

Yes, there is the presence of a threat.

This threat is known as instrumentation. There is an Instrumentation threat when changes are made in the instrument, or the changes are made in the researcher, or the scorer when the research is being carried out.

In this question, mrs smith is the one who is the researcher, the program of reinforcement can be called the instrument. She made errors during the first few week but started getting it right in the second week. So there is a slight change in these two weeks. Causing instrumentation threat to how valid the program is.

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3 years ago

Why did the United States become involved in the conflict between North and South Vietnam?

Delvig [45]

Answer: The U.S entered the war because they were afraid communism was going to spread

Explanation: Hope this helps :)

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3 years ago

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The key factor defining a democracy is that the government is by the​

The key factor defining a democracy is that the government is by the