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Veseljchak [2.6K]

4 years ago

14

Light travels at a speed of 3*10^8 m/sec. how far does light travel in a year?

1 answer:

Iteru [2.4K]4 years ago

4 0

<span>about 186,000 If this is right can I have the brainliest</span>

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Materials Science is the study of solid stuff.<br>A True<br>B) False

miv72 [106K]

Answer:

true

Explanation:

Materials science is an interdisciplinary field involving the properties of matter and its applications to various areas of science and engineering. It includes elements of applied physics and chemistry, as well as chemical, mechanical, civil and electrical engineering.

and we all know matter involve solid liquid or gas

7 0

3 years ago

Read 2 more answers

Juan and Tanisha wanted to build a track for their marbles. They wanted to see how fast their marbles would run down one

frutty [35]

Answer:

c

Explanation:

i took the test

4 0

4 years ago

Consider the reaction 2Na+ Cl2 - 2NaCl.<br> and is<br> Na is<br> Oxidized or reduced

jenyasd209 [6]

Na is reduce as it gain electron from cl

8 0

3 years ago

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Select the correct answer. When a candle burns, which forms of energy does the chemical energy in the candle change to?, A. ligh

sineoko [7]

Answer:

B heat

Explanation:

6 0

3 years ago

A waterbed mattress has the following dimensions: 210 cm X 160 cm X 25 cm. The density of water is 62.4lb/ft3. What is the weigh

artcher [175]

<u>Answer:</u> The weight of water bed in pounds is 1850.16 lb

<u>Explanation:</u>

To calculate the volume of cuboid, we use the equation:

$V=lbh$

where,

V = volume of cuboid

l = length of cuboid = 210 cm

b = breadth of cuboid = 160 cm

h = height of cuboid = 25 cm

Putting values in above equation, we get:

$V=210\times 160\times 25=8.4\times 10^5cm^3=29.65ft^3$ (Conversion factor: $1cm^3=3.53\times 10^{-5}ft^3$ )

To calculate the mass of waterbed, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

Density of waterbed = $62.4lb/ft^3$

Volume of waterbed = $29.65ft^3$

Putting values in above equation, we get:

$62.4lb/ft^3=\frac{\text{Mass of waterbed}}{29.65ft^3}\\\\\text{Mass of waterbed}=(62.4lb/ft^3\times 29.65ft^3)=1850.16lb$

Hence, the weight of water bed in pounds is 1850.16 lb

7 0

4 years ago