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3 years ago

Melting wax

2 answers:

5 0

The answer is C: Chemical Change. Example: Chemical change is like burning fire wood. Physical change is like a pipe rusting. Thank you have a nice day

MaRussiya [10]3 years ago

3 0

It would have to be c because it is a chemical change. your welcome!!!!!

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Describe a scientific method

laila [671]

The process of <u>scientific method</u> involves making hypotheses , driving predictions from them as logical consequences , and then carrying out experiments or empirical observations based on those predictions. A hypotheses is a conjecture , based on knowledge obtained while seeking answers to the questions.

7 0

3 years ago

Europe and North America are moving apart by about 5 m per century. As the continents separate, new ocean floor is created along

Alinara [238K]

Answer:

Area = 25km² in a century.

Explanation:

Given

Spread Rate = 5m/century

Length of rift = 5000km

Convert to metres

Length of rift = 5000 * 1000m

Length of rift = 5,000,000m

In one century, the additional area to Atlantis = (Rift Length) * (Spread rate) * 1 century

Atea = 5,000,000 m * 5m/century * 1 century

Area = 25,000,000m² in a century

----- Convert to km²

Area = 25,000,000km² * 1m²/1,000,000km²

Area = 25km² in a century.

Hence, the total area of new ocean floor created in the Atlantic each century is 25km²

6 0

3 years ago

008 (part 1 of 3) 10.0 points A 3.2 kg object is subjected to two forces, F~ 1 = (1.9 N) ˆı + (−1.9 N) ˆ and F~ 2 = (3.8 N) ˆı

musickatia [10]

Answer:

a' =4.15 m/s²

Explanation:

Given that

m= 3.2 kg

F₁ = 1.9 i −1.9 j N

F₂=3.8 i −10.1 j N

From second law of Newton's

F(net) = m a

F₁ + F₂ = m x a

1.9 i −1.9 j + 3.8 i −10.1 j = 3.2 a

a = 1.78 i - 3.75 j m/s²

The resultant acceleration a'

$a'=\sqrt{1.78^2+3.75^2}\ m/s^2$

a' =4.15 m/s²

6 0

4 years ago

This is how sodium appears in the periodic table. An orange box has N a at the center and 11 above. Below it says sodium and bel

Vera_Pavlovna [14]

Answer:

1 valence electrons

11 prontons

12 neutrons

Explanation:

$N_{11} = 1s^{2} 2s^{2} 2p^{6} 3s^{1} \\$

1 valence electrons

p = 11

11 prontons

A = p + n

A = 22,99 = 23

23 = 11 + n

n =

12 neutrons

4 0

3 years ago

Read 2 more answers

A permanent magnet picks up an iron nail, magnetizing the nail. How is this system different from an electromagnet?

Marina86 [1]

Its D i think because it doesnt refer to any other things

7 0

3 years ago

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