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Ymorist [56]
2 years ago
7

Multiply 0.00032 cm by 4.02 cm and express the answer in scientific notation

Physics
2 answers:
FromTheMoon [43]2 years ago
4 0
0.00032cm*4.02=1.2864 × 10^-3 in scientific notation.
nignag [31]2 years ago
3 0

Answer

1.2864*10^{-3} cm^{2}

Explanation:

First we multiply as normal:

0.00032 cm * 4.02 cm = 0.0012864 cm²

It is important to multiply the units too which is why centimeters become square centimeters.

Then we write the answer in scientific notation:

0.0012864 cm^{2} = 1.2864*10^{-3} cm^{2}

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On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about W/m². What is the electromagnet
Otrada [13]

Answer:

1.907 x 10⁻⁵ J.

Explanation:

Given,

Volume of space, V = 5.20 m³

Assuming the intensity of sunlight(S) be equal to 1.1 x 10³ W/m².

Electromagnetic energy = ?

E = \mu V

E = (\dfrac{S}{c})\times V

where c is the speed of light.

E = (\dfrac{1.1\times 10^3}{3\times 10^8})\times 5.20

E = 1.907\times 10^{-5}\ J

Hence, Electromagnetic energy is equal to 1.907 x 10⁻⁵ J.

4 0
3 years ago
Which of these best explains the ability of small insects to walk on the surface of still water?
Furkat [3]
Well, the surface of still water has surface tension. If there isn't enough mass or weight to break the surface tension, the object will float.
7 0
3 years ago
the density of a steel is 7.8.find the mass of steel cube of side 10 cm. find volume of steel if the mass is 8kg​
lukranit [14]

Answer:

Mass of the steel cube =  7800 kg

Volume of the steel  = 1.025 cubic centimetre

Explanation:

Given:

The density of the steel   =  7.8

Side of the cube = 12 cm

<u>(1)The mass of steel cube :</u>

We know that,

Density  = \frac{Mass}{Volume}

We are given with density and sides of the cube

then volume of the cube

= (side)^3

= 10^3

= 1000 cubic centimetre

Now

7.8 = \frac{mass}{1000}

mass = 7.8 \times 1000

mass =  7800 kg

<u>(2)volume of steel:</u>

Given the mass  = 8 kg

Density  = \frac{Mass}{Volume}

Substituting the values

7.8 = \frac{8}{volume}

volume = \frac{8}{7.8}

volume = 1.025 cubic centimetre

3 0
2 years ago
HELP PLSSSSSSSSSS<br> lithium has three protons. which model shows a neutral atom of lithium?
wolverine [178]

Answer:

B

Explanation:

the 3 electrons makes it neutral

5 0
3 years ago
Read 2 more answers
An atom has 5 protons, 6 neutrons, and 5 electrons. what is the atomic mass?​
ozzi

Answer:

the atomic mass is 11

Explanation:

the atomic mass is basically how many protons and neutrons there are so for this all you have to do is some simple math:

5 + 6 = 11

and boom, ur atomic mass is equal to 11!

4 0
2 years ago
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