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Alexeev081 [22]
3 years ago
11

The process by which a characteristic spreads across space from one place to another over time is diffusion. True / False.

Physics
1 answer:
Fiesta28 [93]3 years ago
5 0

Answer:

True

Explanation:

True

Diffusion refers to that process through which concentration is transmitted from one place to another concentration i.e from higher concentration to lower concentration. Due to this only, characteristics able to spread all over the space.

it can only happen in fluid(liquid and gas) because their particle can move in a random direction

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Which type of wave is classified as electromagnetic?
Nimfa-mama [501]

Answer: B) Light

Explanation: light waves are Electromagnetic waves. Visible light is one of the many types of electromagnetic waves. The others are mechanical waves.

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3 years ago
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If the distance between two objects is increased by a factor of 3 (tripled), how will this affect Fg?
scoray [572]

Answer:

2. F g decreases to 1/9

Explanation:

The formula for calculating the Force of gravity between two masses separated by a distance is expressed as;

F = GMm/d² ... 1

If the distance is tripled, the new force will be;

F1 = GMm/(3d)²

F1 = GMm/9d² ... 2

Divide equation 1 by 2

F/F1 = GMm/d²÷GMm/9d²

F/F1 = GMm/d²×9d²/GMm

F/F1 = 1 * 9

F = 9F1

F1 = 1/9 F

<em>This means that the new force decreases to 1/9</em>

6 0
3 years ago
Which of the following statements is true?
matrenka [14]

Answer:

I am not 100% sure, but I think the answer is either C or D.

Hope this helped!

6 0
3 years ago
The temperature of a smelting furnace is found to be 2000 ℃. Find the
IRISSAK [1]

Answer:

a) The equivalent temperature of 2000 ºC is 3632 ºF.

b) The equivalent temperature of 2000 ºC is 4091.67 R.

c) The equivalent temperature of 2000 ºC is 2273.15 K.

d) The equivalent temperature of 2000 ºC is 1600 ºRe.

Explanation:

a) The equivalent temperature on the Fahrenheit scale is defined by the following formula:

T_{F} = \frac{9}{5}\cdot T_{C}+32 (Eq. 1)

Where:

T_{C} - Temperature, measured in degrees Celsius.

T_{F} - Temperature, measured in degrees Fahrenheit.

If we know that T_{C} = 2000\,^{\circ}C, then the temperature is:

T_{F} = \frac{9}{5}\cdot (2000\,^{\circ}C)+32\,^{\circ}F

T_{F} = 3632\,^{\circ}F

The equivalent temperature of 2000 ºC is 3632 ºF.

b) From result in a) we determine the equivalent temperature on the Rankine scale by using the following formula:

T_{R} = T_{F}+459.67 (Eq. 2)

Where:

T_{F} - Temperature, measured in degrees Fahrenheit.

T_{R} - Temperature, measured in Rankine.

If we know that T_{F} = 3632\,^{\circ}F, then the temperature is:

T_{R} = 3632\,^{\circ}F+459.67\,R

T_{R} = 4091.67\,R

The equivalent temperature of 2000 ºC is 4091.67 R.

c) The equivalent temperature on the absolute scale is calculated by using this expression:

T_{K} = T_{C}+273.15 (Eq. 3)

Where:

T_{C} - Temperature, measured in degrees Celsius.

T_{K} - Temperature, measured in Kelvin.

If we know that T_{C} = 2000\,^{\circ}C, then the temperature is:

T_{K} = 2000\,^{\circ}C+273.15\,K

T_{K} = 2273.15\,K

The equivalent temperature of 2000 ºC is 2273.15 K.

d) The equivalent temperature on the Réaumur scale is calculated by applying this expression:

T_{Re} = \frac{4}{5}\cdot T_{C} (Eq. 4)

Where:

T_{C} - Temperature, measured in degrees Celsius.

T_{Re} - Temperature, measured in degrees Réaumur.

If we know that T_{C} = 2000\,^{\circ}C, then the temperature is:

T_{Re} = \frac{4}{5}\cdot (2000\,^{\circ}C)

T_{Re} = 1600\,^{\circ}Re

The equivalent temperature of 2000 ºC is 1600 ºRe.

5 0
3 years ago
What are the materials necessary to create an electromagnet?
klemol [59]

Answer:

A

Explanation:

Electromagnet: It is a temporary magnet. It consists of wrapping coils around iron core and the power source. When the current passes through the coils around the iron core then it will get magnetized. The domains of the electromagnet gets aligned.

As long as the current passes through it, it will get magnetized. It will loose its magnetism easily when the power is switched off.

In the electromagnet, the strength of the magnetism can be increased or decreased. The poles of the electromagnet are not fixed.

6 0
3 years ago
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