Answer:
3)The formula for speed is
speed=distance ÷ time
distance is in metres (m)
and time is in seconds (s),
so the units will be in metres per second (m/s).
4)to solve for distance use the formula for distance d = st, or distance equals speed times time. ... You can use the equivalent formula d = rt which means distance equals rate times time. distance = rate x time.
5)To solve for time use the formula for time,
t = d/s which means time equals distance divided by speed.
6)The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour.
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PLEASE ANSWER ASAP I WILL GIVE BRAINLIEST!!
Answer: It’s Lower
What can you say about the pH of a carbonic acid solution compared to that of a sulfuric acid soloution with the same contention: Strong acids dissociate fully in water to produce the maximum number of [tex]H^{+}[/tex]ions. The pH levels of strong acids are smaller than those of low acids, which is why the reactions rates for strong acids are greater than the reactions of weak acids with products like metals, metal carbonates, etc. Meaning The pH Level is lower.
Use the drop-down menus to select the names of the labeled structures.
A:
B:
C
Answer:
A:petal
B:pistil
C:stamen
Explanation:got it right on edu 2021
Answer:
C
A
B
Explanation: on ED about Identifying Earth’s Layers
You want to compile a list of properties of a substance , but you don't have a way to measure mass it volume. What kinds of properties can you determine without knowing the amount of matter in the sample?
Explanation:
I Would Determine Mass,Volume And Weight
collect some of chalk, limestone, marble, eggshells and seashells and mix them with a dilute acid. pass the gas produced into a small amount of limewater to test for carbon dioxide. is carbon dioxide gas produced in each case.
Explanation:
Yes carbon dioxide found in each case
how many moles are in 100g of KMn04
If an atom contains one electron and one proton will it carry any charge or not?
Answer:
That atom will not contain any charge because one negative charge of single electron and one positive charge of single proton are neutralized by each other.
What is the man’s weight on Mars where the acceleration due to gravity is 3.7 m/s2?
Answer:
6.39 × 10^23 kg (0.107 M⊕)
Explanation:
If her body were functioning correctly, this is what would happen with starch/glucose
Learning Task 4: Read the instructions found on the next page. Answer the
questions. Write your answers in your answer sheet..
Answer:
1. yes because it wants to go back to its original spot.
2. the poetical energy turns into kenotic energy and then moves back to the original position
3. it will go back to the original position just different angle
4. same thing as last time goes back to the original position but different angle because of how you are holding the ruler.
Explanation:
32. A sample of potassium is composed of 23% K-39, 48% K-40 and the remainder K-41. Calculate the average mass
of the sample.
Answer:
40.06 amu.
Explanation:
From the question given above, the following data were obtained:
Isotope A (K-39)
Mass of A = 39 amu
Abundance of A = 23%
Isotope B (K-40)
Mass of B = 40 amu
Abundance of B = 48%
Isotope C (K-41)
Mass of C = 41 amu
Abundance of C = 100 – (23 + 48)
Abundance of C = 100 – 71
Abundance of C = 29%
Average mass =?
Average mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]
= [(39 × 23)/100] + [(40 × 48)/100] + [(41 × 29)/100]
= 8.97 + 19.2 + 11.89
= 40.06 amu
Thus, the average mass of potassium is 40.06 amu
What do you call a rock that cooled rapidly outside a
volcano?
Explanation:
intrusive rocks.....
.
A chemistry student measures out 41 grams of sodium hydroxide, NaOH. They react it with an excess of hydrochloric acid, HCl, forming water and sodium chloride, NaCl. After boiling away the water and the HCl, they find the mass of the NaCl to be 25.5 grams. What is their percent yield? (Don't forget to write a balanced equation)
What name is given to this type of diagram
Answer:
There's no graph attached to the question
Is the gravity a black hole strong enough to keep light from escaping True or False
Answer:
The gravitational pull of a black hole is so strong that nothing, not even light, can escape once it gets too close. ... Moving at close to the speed of light, these particles ricochet off the event horizon and get hurled outward along the black hole's axis of rotation
(True)
Which of the following pairs of elements will form covalent bonds with each other? PLEASE HELP
The pair of elements which will form covalent bonds with each other are Si (Silicon) and N (Nitrogen). Hence the correct option is (B).
What is Covalent Bond ?
A covalent bond is a chemical bond that involves the sharing of electrons to form electron pairs between atoms.
These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Silicon and nitrogen forms strong covalent bond . This stable covalently bonded material does not readily sinter and cannot be heated over 1850⁰C as it dissociates into silicon and nitrogen.
Therefore, The pair of elements which will form covalent bonds with each other are Si (Silicon) and N (Nitrogen). Hence the correct option is (B).
Learn more about Covalent Bond here ;
https://brainly.com/question/19382448
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An atom of sodium -23 na -23 had a net charge of +1 identify the number of protons, neutrons, and electrons in the atom then explain how you determined the number of each type of particle
Answer:
Protons = 11
Electrons = 10
Neutrons = 12
Explanation:
The atomic number of an element is the number of protons present in the nucleus of an atom of that element. A neutral atom of an element contains equal number of protons and electrons, therefore, the atomic number is also the electron number for a neutral atom.
The mass number is the sum of proton and neutrons in the nucleus of an atom of an element.
The atomic number of sodium-23, Na-23 is 11 while the mass number is 23.
An atom of sodium that has a net charge of +1 has lost an electron. Therefore, from the above information, the number of protons, neutrons and electrons present in this atom of sodium-23 is as follows:
Protons = 11
Electrons = 11 - 1
Electrons = 10
Neutrons = 23 - 11
Neutrons = 12
The nucleus of the eukaryotic cell is important because it
A. Controls the passing of substances through the cell membrane
B. Its rigidity controls the passing of substances through the cell wall
C. Contains DNA and controls the cell
For this question I think the answer is C.
It is the location of a cell's DNA
Which means it controls the cells
Which is true of cell differentiation?
A. Tissues produce various stem cells.
B. Stem cells become different types of cells.
C. Unicellular organisms become multicellular
Answer:
B
Explanation:
When stem cells differentiate, they are different (almost like mutation).
Answer:
osifigkjgjcjfjrjrkrjrktktkkfkfkrkrkrktkgktkt
Select the correct answer.
Beryllium (Be) and fluorine (F) combine to make the compound BeF2. What is the chemical name for this compound?
A.
beryllium fluoride
B.
beryllium fluorine
C.
beryllide fluoride
D.
beryllide fluorine
Answer:
A number is right I think
Answer:
A.
beryllium fluoride
I hope it is helpful...
8
This wasp was viewed under a microscope with a 40x objective lens and a 10x
eyepiece lens.
What was the total magnification
help its for my assessment
25 points
Answer:
400x
Explanation:
magnification=magnification of objective lens*magnification of eyepiece lens
m=40*10
m=400x
The surface currents of Earth’s oceans are most likely created by which of the following?
Answer:
global wind patterns. the rotation of the Earth. the shape of the ocean basins.
Explanation:
what does indicator that a chemical change has occurred?
Answer:
change in color or state of matter
Explanation:
hope i helped! ❤❤
Which of the following best describes the distribution of the world’s food supply? Select all that apply.
Still unevenly distributed leaving millions starving to death.
Quickly changing to be evenly distribute based on humanitarian efforts.
Slowly changing to be slightly more evenly distributed based on humanitarian efforts.
Evenly distributed throughout the population of the world now.
Answer: It would be A and C
Explanation: I did the test and got it right. Hope this helps!
Answer:
A + C
Explanation:
ur an amazing person have a great day :3
quote for today : ~dont trust anyone to much remeber the devil was once angle
Explain the ratio of calcium ions to chloride ions in CaCl2
Answer:
The ionic formula for Calcium Chloride is
C
a
C
l
2
Calcium is an Alkaline Earth Metal in the second column of the periodic table. This means that calcium has 2 valence electrons it readily gives away in order to seek the stability of the octet. This makes calcium a
C
a
+
2
cation.
Chlorine is a Halogen in the 17th column or
p
5
group.
Chlorine has 7 valence electrons. It needs one electron to make it stable at 8 electrons in its valence shells. This makes chlorine a
C
l
−
1
anion.
Ionic bonds form when the charges between the metal cation and non-metal anion are equal and opposite. This means that two
C
l
−
1
anions will balance with one
C
a
+
2
cation.
This makes the formula for calcium chloride,
C
a
C
l
2
.
I hope this is helpful.
A light-year is a way to measure ______ in space.
O time
Odistance
PLS HELPPPPPPPPPPPPPPPPPPPPPPPPPLLLLLPL
Answer:
Distance
Explanation:
The light-year is a measure of distance, not time. It is the total distance that a beam of light, moving in a straight line, travels in one year.
Answer:
distance pooh <3
Explanation:
Which of the following DOES NOT belong to the group?
A.eyes
B.mouth
C.large intestine
D.stomach
Answer:
eyes
Explanation:
It is because the mouth, large intestine and stomach comes in the digestive system abd eyes doesn't.
HOPE THIS HELPS
Which is the best prediction about the cell structures of muscle cells?
A.
Muscle cells have a large volume of cytoplasm so that the cell can easily change shape.
B.
Muscle cells contain a large number of mitochondria in order to provide more energy.
C.
Muscle cells do not have nuclei because they do not need to produce proteins.
D.
Muscle cells are surrounded by cell walls so that they are strong enough to move bones.
Answer:
is B
Explanation:
it isnt C or D so let's look at A and B so the answer is more likely going to be B because A your muscles cant change shape and C your muscles are protien and D humans and animals do not have cell walls that only have cell membrane
Answer:
No B. is incorrect, the REAL answer is actually C.
Explanation:
The main function of muscles is to move body parts by contracting, which requires a lot of energy. so C. is the only answer that concludes with this. The cell structure that produces energy is the mitochondrion.
Therefore, the best prediction is that muscle cells contain a large number of mitochondria in order to provide more energy.
So that means B. would be an assumable answer.
I hope this helps!
earth is one of the planets in the
Answer:
moon obviously
Explanation:
........
If 2.0 moles of magnesium hydroxide are present, how many moles of phosphoric acid, would be required for the reaction?
3Mg(OH)2 + 2H3PO4 Mg3(PO4)2 + 6H2O
Answer:
1.33
Explanation:
There are three bulbs powered by a battery. What will happen if the middle light burns out.
Answer:
ABC
Explanation: