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3 years ago

Tony tuns on a fan on when his room becomes uncomfortably hot. The fan is an example of?

Chemistry

1 answer:

Lesechka [4]3 years ago

4 0

Answer:

C-Electrical energy changed into mechanical energy

Explanation:

Energy, according to the law of conservation of energy, is said to neither be created or lost but only interchangeable from one form to another. Energy exists in different forms. The process by which one form of energy changes to another is called TRANSFORMATION of energy.

However, certain household appliances or devices bring about this transformation of energy. For example, in a case where Tony turns a fan on when his room becomes uncomfortably hot. The fan uses an electric source to get powered on, which then facilitates the blades of the fan to move fast in order to bring about a cool atmosphere.

The fan converts ELECTRICAL energy (electric source) into MECHANICAL energy (moving energy).

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Gina made a poster for plastic recycling week and included this information on her poster:

Aloiza [94]

Answer:

Gina Should Put Rubber Tires Under The Synthetic Category

Gina Should Put Starch Under The Natural Category

Explanation:

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3 years ago

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Calculate the energy in joules and calories required to heat 50.0g silver from 106c to 255c.

Ganezh [65]

Answer:

Explanation:

use this fromula

q = m c ∆t

m is mass of silver =50 g

∆t is difference in temperature= 255-106=149

C= specific heat fo silver ( should be mentioned in your question )

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3 years ago

Question 6: what do i fill in the blank space? what are the units?

Arte-miy333 [17]

Answer:

I don't know chemistry

Explanation:

because this is the hardest subject in the world nobody can solve it so do yourself ok Beta

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3 years ago

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What are the prompt neutrons that occur during nuclear fission?

zysi [14]

Answer:

Prompt Neutrons

Explanation:

Principle. Using uranium-235 as an example, this nucleus absorbs thermal neutrons, and the immediate mass products of a fission event are two large fission fragments, which are remnants of the formed uranium-236 nucleus. These fragments emit two or three free neutrons (2.5 on average), called prompt neutrons.

4 0

3 years ago

The prefix ‘kilo-‘ means a thousand.

Blababa [14]

Answer:

0.97 kg, 1.0kg

Explanation:

As you have mentioned in the question, to convert kilo-gram to grams, this conversion is used, 1 kilogram = 1,000 grams

Initially, when one has to convert from one unit to another, there is a lot of confusion. To avoid any such, multiply and divide the number with units to which it has to be converted.

Here,

970 g = $970 g \times\frac{1 kg}{1 kg}$

This makes no difference to the number.

970 g = $970 g \times\frac{1 kg}{1000 g}$

As, 1 kg= 1,000 g

970 g = $\frac{970}{1000} kg$

970 g = 0.97 kg

Rounding this off to the nearest tenth of a kilogram.

The tenths place is immediately to the right of the decimal point.

Here, 9 is at the tenth's place. Round the tenth's place up if the digit at hundredth's place is greater than or equal to 5. Since, 7 > 5, up the number at tenth's place.

So, answer is 1.0 kg

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3 years ago