Please help!!!!!!!!! ASAP!!!

Answer:

C. Both 1 and 2 are correct.

Answer:

How long does it take for a tennis ball to fall from a certain height if recorded in different weather?

Explanation:

Can I have brainliest?

Answer:

How far can a ball travel if thrown during different wind speed?

Explanation:

Brainliest Plzzz!!!

Answer:

15

Explanation:

Answer:

50 km/h

Explanation:

Since in half an hour it has gone 25km, double that (25 x 2) and you get your answer in km/h. Therefore, the train is going 50km/h.  

Answer:

Combustibility is a measure of how easily a substance bursts into flame, through fire or combustion. This is an important property to consider when a substance is used for construction or is being stored. It is also important in processes that produce combustible substances as by product

Answer:

the answer 32/43

Explanation:

The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them. That is, what is intended with it is to find the fourth term of a proportion knowing the other three. Remember that proportionality is a constant relationship or ratio between different magnitudes.

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other, the direct rule of three must be applied. To solve a direct rule of three, the following formula must be followed:

a ⇒ b

c ⇒ x

So,  

The direct rule of three is the rule applied in this case as follows: If the change in water level is 0.05 inches per hour, what is the change in water level after 24 hours?

change in water level=1.2 inches

To pass a decimal number to a fraction, you must:

Put the decimal number in a fraction above a 1. That is, the decimal number is the numerator, 1 the denominator.

Find an equivalent fraction. That fraction will carry in the denominator a 1, an

Finally, the change in the water level of the pond after 24 hours is 1.2 inches or what is the same  inches

Answer:

NaF

Explanation:

Answer: the answer is Naf

Explanation
and I love pop tart kitties OWO but i hope this helped i have a in science so i got 100% on it bye bye OWO

Answer:

Radiocarbon dating works by comparing the three different isotopes of carbon. Isotopes of a particular element have the same number of protons in their nucleus, but different numbers of neutrons. This means that although they are very similar chemically, they have different masses.

Explanation:

Answer:

Correct distribution of your weight and shifting of your center of gravity are crucial for the mantling technique to...

Bring your foot as high as you can, preferably planting down the heel.

Free up your arms so that you can rotate your hand and push down with your palm.

Remember to chalk up.

Answer:

Thymine

Explanation: I took the test

The DNA molecule shown contains adenine, cytosine, guanine, and thymine. The base that RNA does not have is Thymine. The correct option is A.

DNA and RNA both are genetic materials, and they both represent the genetic material of living organisms. All animals contain DNA in their body. Some plants or bacteria contain RNA as genetic material.

DNA and RNA both contain bases that are attached with a hydrogen bond. These bases are adenine, cytosine, guanine, and thymine. In RNA, the same bases are present.

In RNA, in place of thymine, there is uracil present. Uracil and adenine are joined together with a hydrogen bond. Cytosine and guanine are present together with a hydrogen bond.

Thus, the correct option is A.Thymine, regarding the base present RNA.

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Answer:

graduated cylinder and a scale can be used to measure the volume of a substance. hope this is helpful

Explanation:

Answer: A

Explanation: 0.00624 x 10^8

All you have to do is move the . 8 units left

This gives you 624000.0

Answer:

45 degrees

Explanation:

as you can see, the box in the corner states that both the angles together are 90 degrees, and half of that is 45. 90/2=45

Answer:

Four different types of nitrogenous bases are found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, the thymine is replaced by uracil (U).

Explanation:

yea

Answer:

nope homogeneous

Explanation:

hope this helps :)

Answer:

SOLUTIONS are homogeneous mixtures. A solution is a mixture of two or more substances in a single phase.

Answer:

a molecule is defined as an element or compound consisting of two or more atoms held together by chemical bonds

i hope this helps :)

Explanation:

Answer:

+1 Because there are 82 protons.

Explanation:

Answer:

i think its 39 not to sure

Explanation:

Answer:

A replacement reaction occurs when elements switch places in compounds. This type of reaction involves ions. Generally, more reactive elements replace less reactive elements. A single replacement reaction occurs when one element replaces another element in one compound.

Explanation:

Just figured it out!

Answer: a double - replacement reaction

Explanation:

I just got it right on Apex

Answer:

D.Magnesium

Explanation:

Cause imma nerd

Answer: A (Half of the chromosome pairs from the original cell

Explanation:

If you could magically make two neutrons in the nucleus of an atom disappear, the atomic number and the electrical charge of that atom would remain unchanged. Neutrons do not carry an electrical charge so adding or removing them from the nucleus does not change the electrical charge of the nucleus. It does, however, change the mass of the nucleus. Adding or removing neutrons from the nucleus are how isotopes are created.

Protons carry a positive electrical charge and they alone determine the charge of the nucleus. Adding or removing protons from the nucleus changes the charge of the nucleus and changes that atom's atomic number. So, adding or removing protons from the nucleus changes what element that atom is! For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium. (Actually, a few neutrons have to be added as well to make the new nucleus stable, but the end result is still helium.) Keep in mind that atoms, by definition, are electrically neutral and always contain the same number of protons and electrons.

Answer:

please upload a clearer picture

Answer:

1 Rain falling down

Answer:

the last one it increases number of collisions by speeding up the particle motion

Explanation:

the more thermal energy something it has the faster particles move

Option C - Electrons are outside the nucleus and and have a negative charge is the correct alternative.

We have electrons.

We have to determine their role inside the atom.

An electron is one of the subatomic particles within an atom. It is negatively charged particle whose magnitude is 1.6 x 10⁻¹⁹ C.

According to the question -

The role of electrons inside the atom is as follows -

Hence, Option C is the correct alternative.

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Answer:

Through a series of chemical reactions and tectonic activity, carbon takes between 100-200 million years to move between rocks, soil, ocean, and atmosphere in the slow carbon cycle. ... The acid dissolves rocks—a process called chemical weathering—and releases calcium, magnesium, potassium, or sodium ions.

Answer:

Loses

Explanation:

liquid changes into solid, heat is released. The energy released upon freezing, known as the enthalpy of fusion, is a latent heat, and is exactly the same as the energy required to melt the same amount of the solid.

Answer:

Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. For a solid to change to a liquid, matter must absorb energy from its surroundings.

Explanation: