What is the benefit of using the metric system and SI Units?Question 1 options:

to convey information accurately so scientists can refer to the same quantity no matter the location or language

there is no need to use the same system of measurements around the world

to measure accurately on equipment

so that all measurement systems can be used together
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What are the best units for a scientist to measure the distance between cities?

Question 3 options:

inches

meters

miles

kilometers

Answers

Answer 1

Answer:

Question 1:

The best option for the benefit of using the metric system and SI Units is:

to convey information accurately so scientists can refer to the same quantity no matter the location or language.

The metric system and SI Units are standardized, allowing for consistent and accurate measurements that can be understood globally, irrespective of language or location.

Question 3:

The best units for a scientist to measure the distance between cities would be:

kilometers

Kilometers are the SI unit for measuring long distances and are universally understood in the scientific community.

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Classical physics is a good approximation to modern physics under certain circumstances. What are they?

The Coriolis effect is the result of which of the following? A. winds spinning off the equator B. the rotation of the earth on its axis C. the different air movements north and south of the equator D. the friction that slows down winds near the earth’s surface

Answers

The answer is B. the rotation of the earth on its axis.

Coriolis effect is the effect of the Earth's rotation on theoceans and atmosphere. It is the cause of deflection to the right in thenorthern hemisphere and to the left in the southern hemisphere. Thus, in thenorthern hemisphere, gyres spin clockwise, and in the southern hemisphere, gyres spin counter-clockwise.

Answer:

B. the rotation of Earth on its axis

Explanation:

K12

An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 10 meters. Was there work done by the mouse? Explain.

Answers

yes because the mouse was moving with kts kwn force.

Answer: no

Explanation:

force and distance are not in the same direction

The main reason ice blocks became unpopular for cooling food was

Answers

The source of the ice was unsanitary

Answer:

The source of ice was unsanitary :>

Explanation:

an electron in a mercury atom changes from energy level b to a higher energy level when the atom absorbs a single photon with an energy of 3.06eV. Determine the energy of the photon, in joules.

Answers

Hi There! :)

An electron in a mercury atom changes from energy level b to a higher energy level when the atom absorbs a single photon with an energy of 3.06eV.Determine the energy of the photon, in joules.

kg=15000J

Calcium hydroxide + hydrochloric acid mc012-1.jpg calcium chloride + waterWhich is the corresponding formula equation?

Answers

$Ca (OH)_2 + 2HCl \rightarrow Ca Cl_2 + 2H_2 O$

Explanation:

First of all, let's try to identify the different substances involved in the reaction:

- calcium hydroxide: calcium is the element $Ca$ , while hydroxide corresponds to the ion $OH^-$ . Calcium has 2 valence electrons, so the calcium ion is $Ca^(2+)$ , and since the ion $OH^-$ has only one negative charge, we need two of them to combine with the calcium ion, therefore: $Ca(OH)_2$

- hydrochloric acid: this is an acid, so with one ion of hydrogen $H^+$ , and the other element is the chlorine, which in the ion form is $Cl^-$ , so the hydrochloric acid is $HCl$

- calcium chloride: this is the combination of the calcium ion, $Ca^(2+)$ , with the chlorine ion, $Cl^-$ , so the compound is $CaCl_2$

- Water: this is given by $H_2 O$

so, the reaction is

$Ca (OH)_2 + HCl \rightarrow Ca Cl_2 + H_2 O$

However, this reaction is not balanced yet: in fact, we have 2 atoms of oxygen on the left and only one on the right. Moreover, we have 3 atoms of hydrogen on the left and only 2 on the right. Therefore, in order to balance it, we must write:

$Ca (OH)_2 + 2HCl \rightarrow Ca Cl_2 + 2H_2 O$

D) Ca(OH)2(s) + 2HCI(l) -> CaCl2(aq) + 2H2O(l)

Why does diamond sparkles stars twinkles?

Answers

Answer:

Because they want attention

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