Why does diamond sparkles stars twinkles?

Answers

Answer 1

Answer:

Answer:

Because they want attention

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A deficiency in zinc might result in stunted growth. Please select the best answer from the choices provided. T F
What is the rms Voltage value and why we use it ?
A. Trueb. False: If you lose engine power or control and cannot get completely off the road, turn on your emergency flashers.
In order to increase thermal energy, the temperature must ___________.a. increase c. remain the same b. decrease d. it cannot be determined
What is the centripetal force that allows a car to move around a sharp curve in a roadway?

Visible light is an example of?

Answers

Answer:

Visible light is an example of electromagnetic waves.

Explanation:

Visible light is an example of electromagnetic waves. The visible light are the range in which the light is visible to the human eye. The wavelength of visible light varies from 400 nm to 700 nm.

The visible region consists of following light namely,

1. Violet : 380–450 nm

2. Blue : 450–485 nm

3. Cyan : 485–500 nm

4. Green : 500–565 nm

5. Yellow : 565–590 nm

6. Orange : 590–625 nm

7. Red : 625–740 nm

Hence, the visible light is an example of electromagnetic wave.

electromagentic waves

A bicyclist travels the first 700 m of a trip at an average speed of 8 m/s, travelsthe next 600 m in 90 s and the last 50s at a speed of 21 m/s. Find the average speed
of the bicyclist for this trip

Answers

Answer:

500

Explanation: its 500 because you can also just search for it

If a particular atom of an element has five protons a neutral atom of this element would have ________ electrons. A. 0 B. 3 C. 5 D. 8

Answers

If a particular atom of an element has five protons a neutral atom of this element would have 5 electrons.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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C. 5

a neutral atom has no electrical charge. protons are positive and electrons are negative, they need to be the same to make it a neutral atom.

Which statement is correct? a) 1 in. = 2.54 cm b) 7 in. = 17.68 cm c) 1 ft = 12 in. d) 74 in. = 1 yd

Answers

Answer:

a) 1 in. = 2.54 cm

Explanation:

Final answer:

The correct statement is a) 1 in. = 2.54 cm. To convert inches to centimeters, multiply the number of inches by the conversion factor 2.54 cm/1 in.

Explanation:

The correct statement is a) 1 in. = 2.54 cm.

To convert inches to centimeters, you can multiply the number of inches by the conversion factor 2.54 cm/1 in. For example, if you want to convert 7 inches to centimeters, you would multiply 7 in. by 2.54 cm/1 in. This gives you 17.78 cm, which is approximately equal to 17.68 cm (as stated in option b).

Option c) 1 ft = 12 in. and option d) 74 in. = 1 yd are also correct statements, but they are not directly related to the conversion between inches and centimeters.

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Choose most accurate statement:a. Waves can exist in liquids and gases only.
b. Waves can exist in liquids and solids only.
c. Waves can exist in solids and liquids only.
d. Waves can exist in solids, liquids, and gases.

Answers

"Waves can exist in solids, liquids, and gases."
is the ONLY accurate statement.

The word "only" in the other 3 statements makes them
not accurate at all.

How is energy related to the change of state represented by the model? a.atoms gain energy as a gas changes to a solid.
b.atoms gain energy as a gas changes to a liquid.
c.atoms lose energy as a gas changes to a solid.
d.atoms lose energy as a gas changes to a liquid.

Answers

I think the correct answer from the choices listed above is option C. The energy related to the change of state represented by the model would be that the atoms lose energy as a gas changes to a solid. Hope this answers the question. Have a nice day.

Answer:

option C

Explanation:

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The strength of gravitational force is dependent on the masses of and distance between two objects. a. Trueb. False

50 cm to mA flat coil of wire consisting of 20 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 2.0 T to 6.0 T in 2.0 s. If the coil has a total resistance of 0.40 Ω, what is the magnitude of the induced current?