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3 years ago

Energy travels in what direction?

2 answers:

3 0

The direction of energy transfer is perpendicular to the motion of the wave. Through vibrations of electric and magnetic fields

Hope this helps!

Lady_Fox [76]3 years ago

3 0

It flows from one place to another, pls give brainliest.

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Can somebody help me. Will mark brainliest.

pickupchik [31]

Answer:

2.27%

Explanation:

The observed value of the boiling point = 71.8°C

The actual value of the boiling point = 70.2°C

We need to find the percentage error of the student's measurement. The percentage error in any value is given by :

$\%=\dfrac{\text{calculated value-actual value}}{\text{actual value}}\times 100\\\\=\dfrac{71.8-70.2}{70.2}\times 100\\\\=2.27\%$

So, the required percentage error is 2.27%.

8 0

3 years ago

Pick the correct answer!

Leto [7]

Answer:

I think it would be b. The octet rule states that transition metal group elements tend to react so that they attain a noble gas electron configuration.

8 0

3 years ago

What is the Oort cloud

Firlakuza [10]

The Oort cloud sometimes called the Öpik–Oort cloud it was first described in 1950 by Dutch astronomer Jan Oort

5 0

3 years ago

Uranium-232 has a half-life of 68. 8 years. After 344. 0 years, how much uranium-232 will remain from a 100. 0-g sample? 1. 56 g

Ahat [919]

The remaining mass of Uranium -232 has been 3.13 g. Thus, option B is correct.

The half life has been defined as the time required by the substance to reduce to half of its initial value.

The half life has been expressed as:

$N_t=N_0\;(\dfrac{1}{2})^\frac{t}{t_{1/2}}$

<h3>Computation for the remaining Uranium-232</h3>

The initial mass of uranium, $N_0=100\;\rm g$

The half-life of uranium has been, $t_\frac{1}{2} =68.8\;\rm years$

The time required for the reducing has been, $t=344\;\rm years$

Substituting the values for the remaining mass of Uranium-232 ( $N_t$ ):

$N_t=100\;\times\;(\dfrac{1}{2})^\frac{344}{68.8} \\
N_t=100\;\times\;(\dfrac{1}{2} )^5\\
N_t=3.13\;\rm g$

The remaining mass of Uranium -232 has been 3.13 g. Thus, option B is correct.

Learn more about half-life, here:

brainly.com/question/24710827

8 0

2 years ago

How are petrified fossils similar to preserved remains? How are they different?

konstantin123 [22]

Well, both fossils and preserved remains retain the shape and form of the remains, but fossils do not actually retain the matter that made up the remains, instead, bones and tissues (usually just bones) have been replaced with stone.

4 0

4 years ago

Read 2 more answers