Answer:
Explanation:
Gravity is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. ... Gravity creates stars and planets by pulling together the material from which they are made. Gravity not only pulls on mass but also on light.
which of the following lists contains only elements?
A ) air , water,oxygen
b) hydrogen, oxygen, brass
c) air , fire , water, earth
d) calcium, sulphur, carbon
What kind of reaction happens when two compounds switch elements? Apex
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
Which pair of elements will have the same number of valence numbers
A- lithium and barium
B- gallium and germanium
C- tellurium and polonium
D- iondine and xenon
Mark as brainlist :)
Question 1 (4 points)
Which of the following is/are true about Van der Waals forces?
A. They are very weak
B. They are a a type of momentary dipole
C. Both 1 and 2 are correct
D. neither 1 nor 2 is correct
Answer:
C. Both 1 and 2 are correct.
please answer its due in 10 minutes teacher just assigned it 5 minutes ago
Answer:
please upload a clearer picture
Answer:
1 Rain falling down
2)Freezing 3)Melting 4)Adding or removing energy from matter causes a physical change as matter moves from ome place to the other5)5heI need help what is the Find the value of x
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
Which formula is an ionic compound?
A.NaF
B.N2
C.NO2
D.CO2
FIRST ACCUAL ANSWER GETS BRAINLIST :)
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
How could the combustibility of a substance influence how the substance is used?
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
Use a sentence to describe how the mantle moves. Use another sentence to describe why the mantle moves this way.
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.
*PLEASE HELP*
How do carbon radiometric dating utilize isotopes?
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:
2
A train travels 25 km in 0.5 hrs. How fast is the train going?
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.
What is a Testable question I can use for tennis balls
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!!!
state two advantages of parallel over series connection in table form?
Advantages of parallel combination over series combination are:
1) In parallel combination each appliance gets the full voltage.
2) If one appliance is switched on/of others are not affected.
3) The parallel circuit divide the current through the appliances. Each appliance gets proper current depending on its resistance.
4) In a parallel combination it is very easy to connect or disconnect a new appliance without affecting the working of other appliances.
choose what you like!
Note that there are also some disadvantages to using parallel connections over series connections, such as increased complexity in wiring and the need for additional safety measures when working with high voltage circuits. The choice between series and parallel connections depends on the specific requirements of the circuit and the devices being used.
Help fast I have a few left
Answer: A
Explanation: 0.00624 x 10^8
All you have to do is move the . 8 units left
This gives you 624000.0
(fill the blank)
The sex cells produced through meiosis each have ___.
A. half of the chromosome pairs from the original cell
B. a single chromosome from the original cell
C. pairs of chromosomes identical to the original cell
D. one chromosome from each pair in the original cell
Answer: A (Half of the chromosome pairs from the original cell
Explanation:
Which metal is most likely to form more than one kind of positively charged ion?
A.Sodium
B.Barium
C.Nickel
D.Magnesium
Answer:
D.Magnesium
Explanation:
Cause imma nerd
How many moles of potassium are there in 1 kg of potassium?
Answer:
i think its 39 not to sure
Explanation:
what are the different kind of nitrogen bases
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
What is the charge of an Pb atom with 81 electrons?
Answer:
+1 Because there are 82 protons.
Explanation:
compare and contrast gymnosperms and angiosperms
(JSYK: this is technically biology)
Anyways, a gymnosperm is a plant (usually a tree) that has unprotected seeds, this means it bears no fruits and can include (but are not limited to) connifers, cycads, and the ginko. Angiosperms produce flowers to help fertilization and have protected seeds. They are also likely to produce fruits or vegetables.
Hope this helps, if not, comment down below please!!!
How do the rock cycle and the carbon cycle relate to each other?
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.
How many elements make up Sodium Bicarbonate?
when water changes state from a liquid to a solid is energy absorbed or lost?
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:
How does an increase in thermal energy influence the particles of the reactants in a chemical reaction?
Group of answer choices
it increases the chance of particles being properly aligned by increasing the number of collisions
it decreases the number of particle collisions
it increases the number of collisions by speeding up the particle motion
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
The solution starts with increased ________________
Answer:
Concentration
Explanation:
Answer:
concintracion
Explanation:
Which tools can be used to measure the volume of a substance? Select the two correct answers.
a. tape measure
b. digital balance
c. measuring cup
d. graduated cylinder
Answer:
graduated cylinder and a scale can be used to measure the volume of a substance. hope this is helpful
Explanation:
someone please i need help
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
DNA and RNA have base pairs that form hydrogen bonds with complementary bases. The DNA molecule shown contains adenine, cytosine, guanine, and thymine. Which base does RNA not have?
A) Thymine B) Adenine C) Guanine D) Cytosine
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.
What are DNA and RNA?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.
To learn more about DNA and RNA, click here:
https://brainly.com/question/26931852
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How does the atomic mass of the atom change when an electron is added or removed?
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.
The unit for force is kg m/s.
True Or false?