PHYSICS MIDDLE SCHOOL

Explain how drinking through a straw illustrates fluid flowing from high-pressure to low-pressure areas.

Answers

Answer 1
Answer: the pressure in the straw is reduced, but the atmospeheric pressure on the surface of the liquid stays the same.
Answer 2
Answer:

The outside pressure forces the liquid up the straw and into your mouth. So, just by drinking through a straw, you can observe an important property of fluids. Fluids flow from areas of high pressure to areas of low pressure.

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What are some similarities between heat and temperature?

Answers

Answer
Heat is a form of energy while temperature is the measure or degree of coldness or hotness of a substance, place or something.
The similarities between heat and temperature are:
1. Heat causes the temperatures to raise. This means that it is the heat energy that causes temperatures to change.
2. Both heat and temperatures can be measured by specific units. Heat is measured in joules while temperature is measured in kelvin.  

By definition, we have:

Heat:

Energy that is manifested by an increase in temperature and comes from the transformation of other energies; is originated by the vibratory movements of the atoms and the molecules that form the bodies

Temperature:

The temperature is a magnitude referred to the common notions of heat measurable by a thermometer. In physics, it is defined as a scalar quantity related to the internal energy of a thermodynamic system

Some similarities are:

1) The more heat there is, the higher the temperature.

2) The less heat there is, the lower the temperature.

3) Mathematically the heat and the temperature difference between two points are proportional.

Which is the best example of the concept of heredity? A. A black cat blends into its environment at night. B. A baby has his mother's hair and eye color. C. As a barnacle grows, it gets calcium for its shell from seawater. D. The sunflower will move so its flower head is always facing the sun.

Answers

B) A baby has his mother's hair and eye color 
B. A baby has it's mother's hair and eye color

The reason for this is, well, heredity is the passing of traits from parents to offspring. So, a black cat blending into it's environment at night simply does not have much to do with heredity. But a baby inheriting it's mother's eye color and hair color is definitely heredity, for it was inherited.

Hope this helped!!

I was an American inventor and businessman who is best known for inventing the electric light bulb. Who am I?

Answers

You are Thomas Alva Edison.  You also invented the phonograph
and the first practical movie camera.  Sadly, you died almost exactly
9 years before I was born.
The one man, who was famous and was also known for inventing the electric light bulb..was the one and only...Thomas Edison!!!

Calculate the total resistance in a parallel circuit made up of resistances of 2, 3, and 4.1.1
9.0
0.91

Answers

Answer:

0.91

Explanation:

as equivalence resistance can be found out using the

1/Req = 1/r1 +1/r2 +1/r3......

now, 1/req= 1/2+1/3+1/4

=6/12+4/12+3/12

=13/12

i.e, req =12/13 =0.91

✌️:)

Suppose a scientist made this model.what info did the scientist need to know in order to make the model

Answers


Suppose I wanted to answer this question about the model.
What info about the model would I need to know in order to
make any intelligent guess about the model ?

Hint: 
It would really help if I could SEE the model, or at least a photo of it.

A light bulb converts electrical energy into light energy and also some thermal energy. The amount of electrical energy is 50 Joules before the conversions. What is the total amount of energy from before the conversions to after the conversions?

Answers

If the amount of electrical energy is 50 Joules before the conversions, then it would be 50 Joules after the conversion.

According to law of conservation of energy, we cannot create or destroy energy so it remains constant

Hope this helps!
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