a block that is 80 degrees is places next to a 20 degree block. the warmer block heats the cooler block by the process of... A)convection. B)conduction. C) a and b. D) neither a or b

Answers

Answer 1

Answer: Answer: option B: conduction.

Conduction is the heat transfer that happens between two bodies in direct contact, due to the collision of the molecules, atoms and electrons within the body (microscopical level).

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Alisha uses wire to connect a battery, a lightbulb, and a switch, but the bulb does not light up even though the switch is in the closed position. Which might explain the problem?

Answers

Alisha uses wire to connect a battery, a lightbulb, and a switch, but the bulb does not light up even though the switch is in the closed position. The switch is in closed position that is why her circuit would not work. It must be open so that electrons can move along the wire and enable the lightbulb to light up.

Streams of electrically charged particles flowing at high speeds from the sun make up the

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That's the so-called 'solar wind'.

Which of the following describes gamma rays?short wavelength, high frequency
short wavelength, low frequency
long wavelength, high frequency
long wavelength, low frequency

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Answer: short wavelength, high frequency

Explanation:

Gamma rays are highly energetic electromagnetic waves. High energy implies high frequency.

E = h ν

h is the Planck's constant, ν is the frequency.

For electromagnetic radiation, frequency is inversely proportional to wavelength. Thus, gamma rays have high frequency but short wavelength.

The frequency of gamma rays is greater than 10¹⁹ Hz and wavelength is less 10⁻¹² m.

Nuclear power plants require large volumes of _____ to cool reactors and convert heat to electricity.air
water
salt
uranium

Answers

Nuclear power plants require large volumes of water to cool reactors and convert heat to electricity. Water is a good conductor of thermal energy and is conducive for cooling reactors because it can easily absorb energy without application of anything.

Answer:

Water

Explanation:

Charles is having a lot of problems with errors in a very complicated spreadsheet that he inherited from a colleague, and he turns to another co-worker, Seymour, for tips on how to trace errors in the sheet. If Charles sees which of the following, Seymour explains, there is a mistyped function name in the sheet.a.#FORM?
b.#NAME?
c.#####
d.#FNCT?

Answers

Answer:

b.#NAME?

Explanation:

Remember, in Spreadsheet programs like Ms Excel several types of errors can occur such as value error.

However, since Seymour explains that there is a mistyped function name in the sheet it is more likely to display on the affected cell as #NAME?.

For example the function =SUM is wrongly spelled =SOM.

Therefore it is important to make sure the function name is spelled correctly.

When Tito lifts the heaviest object he can, he is testing his _____.

Answers

When Tito lifts the heaviest object he can, he is probably testing his ability to lift weight. In other words, he could also be testing his upper body muscle strength. The process is called weight-lifting and it is designed to test the muscle strength of your upper body.

Explanation : When Tito lifts the heaviest object, he is testing his strength.

We know, strength is the quality of the physical energy and potential of the person. The strength of the person is power and his capacity.

So, we can say that When Tito lifts the heaviest objects then he is testing his strength, potential, and power.

Other Questions

All of the following are electromagnetic waves excepta. X rays. b. sound waves. c. gamma rays. d. radio waves.

Ammonia is a weak base because produce ____ ion in solution?

To squeeze a gas into a smaller space

The Sun and most stars are made almost entirely of a. hydrogen and carbon. b. helium and nitrogen. c. oxygen and nitrogen. d. helium and hydrogen.