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SVETLANKA909090 [29]
3 years ago
10

Which substance is a combination of different atoms?

Physics
2 answers:
grigory [225]3 years ago
8 0
Answer:

B. Heterogeneous mixture
Aleks04 [339]3 years ago
8 0

Answer:

It wasn't a heterogeneous mixture, it's compound

Explanation:

I got it wrong on the test when I chose heterogeneous mixture

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Find the pressure exerted by a force 8000 newton's on an area of 25m^2. Give your answer in newton's/n^2
Vanyuwa [196]

The pressure exerted by this force is equal to 320 N/m^2.

<u>Given the following data:</u>

  • Force = 8000 Newton.
  • Area = 25 m^2.

To calculate the pressure exerted by this force:

<h3>How to calculate pressure.</h3>

Mathematically, pressure is given by this formula:

P=\frac{F}{A}

<u>Where:</u>

  • P is the pressure.
  • F is the force.
  • A is the area.

Substituting the given parameters into the formula, we have:

P = \frac{8000}{25}

P = 320 N/m^2.

Read more on pressure here: brainly.com/question/8033367

5 0
2 years ago
A voltage is applied to a resistor,
ladessa [460]

Answer:

Explanation:

By Ohms Law, Voltage = Current * Resistance

Keeping the voltage the same and doubling the resistance, the current will be halved.

So the new current = 1.5/2 = 0.75A

6 0
2 years ago
How does light determine whether it acts as a particle or a wave?
pishuonlain [190]
Great question. Albert Einstein proved that light acts as both a particle and a wave in his 1905 paper. This is called wave-particle duality. 
With quantum mechanics, it is easy to prove that light behaves as both a particle and a wave. 
When UV light hits a metal surface, it causes an emission of electrons. This "photoelectric effect" proves how light behaves. 
5 0
2 years ago
Read 2 more answers
Which temperature scale does NOT have negative values?
german

Kelvin temperature scale

4 0
3 years ago
Because she had serious traffic accident on Friday the 13th of last month, Felicia is conceived that all Friday the 13th will br
elena-s [515]

Answer:

Illusory correlation

Explanation:

Illusory correlation is a psychological phenomenon of sensing a correlation or relationship between a particular quantity and other variables however unrelated the two variables may be. A person may establish such connections, which are indeed false connections, as a result of over emphasis on novel incidents that are easily noticed due to them being salient

For example, when a waiter at a restaurant is being rude to a person after the person was made to walk under a ladder due to ongoing construction.

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2 years ago
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