An incandescent light bulb produces light when electrons flow through thea. air.
b. glass.
c. filament.
d. vacuum.

Answers

Answer 1

Answer: Electriccurrent passes through a filament of an incandescent bulb, thereby increasingit temperature. When current flows, it contains electrons through the filamentto produce light. The answer is c. Typically, incandescent light bulb consistsof a glass enclosure that contains tungsten filament. The glass enclosure containseither a vacuum or an inert gas that serves as the filament protection fromevaporating. Incandescent light bulbs contain a stem attached at to its base toallow the electrical contacts to run through the envelope without gas or airleaks

Answer 2

Answer:

Answer:filament

Explanation:

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Simple True/False Physics QuestionA bar magnet cut in half will yield two complete bar magnets. True or False?

An explanation of your answer would be appreciated.

Answers

True because when a bar magnet or any magnet is cut in half they then start to have their own South and North Pole.

Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top. Explain how

Answers

When hot water comes in contact with cold water , the hot water from the bottom of the vessel is hot and so reduces its density. So low density ware goes up and cold water from side or above replaces the space. This is how Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top.

What is convection?

The process of heat transfer from one part of a fluid to another part by the actual movement of the particles of the fluid is called convection. Liquid and gases are heated by the process of convection.

learn more about convection

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The transfer of energy means, in convention process, transport of matter. In this case, hot water has lower density than cool water. The water with less density ascends and leaves gaps that are occupied with cooler water "packages".

Ilya and Anya each can run at a speed of 8.90mph and walk at a speed of 3.80mph . They set off together on a route of length 5.00miles. Anya walks half of the distance and runs the other half, while Ilya walks half of the time and runs the other half.a)How long does it take Anya to cover the distance of 5.00miles ?
Express your answer numerically, in minutes.
b)Find Anya's average speed.
Express Anya's average speed save,Anya numerically, in miles per hour
C)How long does it take Ilya to cover the distance?
Express the time tIlya taken by Ilya numerically, in minutes.
d)Now find Ilya's average speed.
Express Ilya's average speed save,Ilya numerically, in miles per hour

Answers

Answer:

Part a)

$T = 0.94 hours$

Part b)

$v_(avg) = 5.32 mph$

Part c)

$T = 0.79 h$

Part d)

$v_(avg) = 6.35 mph$

Explanation:

Speed while she is running = 8.90 mph

speed while she walk = 3.80 mph

Part a)

Anya walks half the distance

so time to walk

$t_1 = (2.5)/(3.80) = 0.66 h$

time to cover the distance while she run

$t_2 = (2.5)/(8.90) = 0.28 h$

total time to cover the distance

$T = t_1 + t_2$

$T = 0.94 hours$

Part b)

Average speed is given as

$v_(avg) = (d)/(t)$

$v_(avg) = (5.00 miles)/(0.94)$

$v_(avg) = 5.32 mph$

Part c)

Half the time Llya walks and next half the time she runs

so total distance is given as

$d = v_1(T/2) + v_2(T/2)$

so we have

$5.00 = 8.90(T/2) + 3.80(T/2)$

$T = 0.79 h$

Part d)

Average speed is given as

$v_(avg) = (d)/(t)$

$v_(avg) = (5.00 miles)/(0.79)$

$v_(avg) = 6.35 mph$

Powerful eruptions on the sun’s surface are called ________. a. sunspots
b. solar flares
c. coronas
d. supernovae

Answers

The answer is solar flare ; an eruption of high - energy radiation from the sun.

Answer: Solar Flares

Explanation:

What kinds of bonds can happen between the elements of a compound

Answers

What kinds of bonds can happen between the elements of a compound?

Covalent and Ionic

The greater the concentration of sulfur and nitrogen oxides, the higher the pH of precipitation.True
False

Answers

Answer: False

Nitrogen and sulfur dioxide are acidic oxides in nature. The burning of fossil fuels and other sources are responsible for addition of these oxides in the atmosphere of earth. These oxides mixed with water vapor causes acid rain. Being acidic in nature they will have low pH value. Therefore, greater the concentration of sulfur and nitrogen oxides, will lower the pH value of precipitation.

Answer:

False

Explanation:

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