Answer:
9.9 seconds
Explanation:
hope this helps :)
How do we know that salt mixing with water is not a chemical change?
Explanation:
In contrast, dissolving a covalent compound like sugar does not result in a chemical reaction. When sugar is dissolved, the molecules disperse throughout the water, but they do not change their chemical identity.
Answer:
its a chemical change
Explanation:
mix salt and water together to see what its taste like
The weight of a rock is 8.5 pounds. Does this statement include
quantitative data or qualitative data? *
Answer:
quantitative
Explanation:
Which of the following countries is a dictatorship as of 2019
The United States
Germany
North Korea
Turkey
Answer:
North Korea I'm pretty sure
4
Select the correct answer.
Based on the law of conservation of energy, which statement is false?
A.
Energy is lost when machines don't work right.
B.
We can't add more energy to the universe.
C.
We can't destroy energy that exists in the universe.
Energy changes from one form to another.
D.
A force of 150 N is exerted 22◦north of east. Therefore, the northward component is 139 N north.
Given :
A force of 150 N is exerted 22◦ north of east.
To Find :
The northward component of force .
Solution :
The angle between the force and east direction is 22° .
So , component of Force F in north direction is given by :
[tex]Fsin\ \theta\\\\150\times sin\ 22^o\\\\56.19\ N[/tex]
Therefore , the component of force in northward direction is 56.19 N .
Hence , this is the required solution .
which type and form of energy are present in the picture when high frequency of wind is present?
Answer:kinetic and mechanical
Explanation:
During a chemical reaction, Bromine (Br) would be expected to
o gain 1 valence electron to have a full octet
O lose 1 valence electron to have a full octet
O gain 7 valence electrons to have a full octet
o lose 7 valence electrons to have a full octet
Answer:
During a chemical reaction, Bromine (Br) would be expected to gain 1 valence electron to have a full octet.
Explanation:
In the periodic table the elements are ordered so that those with similar chemical properties are located close to each other.
The elements are arranged in horizontal rows, called periods, which coincide with the last electronic layer of the element. That is, an element with five electronic shells will be in the fifth period.
The columns of the table are called groups. The elements that make up each group coincide in their electronic configuration of valence electrons, that is, they have the same number of electrons in their last.
The elements tend to resemble the closest noble gases in terms of their electronic configuration of the last layer, that is, having eight electrons in the last layer to be stable.
Bromine belongs to group 17 (VII A), which indicates that it has 7 electrons in its last shell. So bromine requires more energy to lose all 7 electrons and generate stability, than it does to gain 1 electron and fill in 8 electrons to be stable. So:
During a chemical reaction, Bromine (Br) would be expected to gain 1 valence electron to have a full octet.
Why would scientists call solids and liquids a condensed phase of matter?
Explanation:
Liquids and solids are often referred to as condensed phases because the particles are very close together. The following table summarizes properties of gases, liquids, and solids and identifies the microscopic behavior responsible for each property.
1.30 x 10-5?
What is the scientific notation for 1.30x10-5
Explanation:
The given number is 1.30x10-5. We need to convert it into scientific notation. We know that, any no can be written in this form as follows :
[tex]N=m. 0\times 10^n[/tex] ...(1)
m is any real no and n is any integer
If we compare the given no with equation (1), then, we found that m = 1.3 and n = -5.
It means that the given no is already in scientific notation. It can be written as :
[tex]N=1.30\times 10^{-5}[/tex]
The scientific notation for 1.30 × 10⁻⁵ is 1.30E-5.
Scientific notation is a way to represent numbers that are either very large or very small using powers of 10. It consists of two components: the coefficient and the exponent.
In the given number, 1.30 × 10⁻⁵, the coefficient is 1.30, and the exponent is -5. The coefficient represents the significant digits of the number, and the exponent indicates the power of 10 by which the coefficient should be multiplied.
To convert the number to scientific notation, you start by moving the decimal point to the left until there is only one non-zero digit to the left of the decimal point. In this case, the decimal point is moved 5 places to the left, resulting in the coefficient 0.000013.
The exponent, -5, tells us that the decimal point has been moved 5 places to the left. In scientific notation, a negative exponent indicates a small number, as in this case.
Putting it all together, the scientific notation for 1.30 × 10⁻⁵ is 1.30E-5, where the "E" represents "times ten to the power of." It means that the number is 1.30 multiplied by 10 raised to the power of -5, which is equivalent to 0.000013 in standard decimal notation.
Therefore, 1.30E-5 is the correct scientific notation.
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How does heat from the sun reach us?At what speed does this transfer of heat takes place?
a cruise took 6 hours to fulfill its trip it travelled at an average speed of 160 km/h for thefirst 2 h 15 min
Answer: 1035
Explanation:
5.
If a bicycle and a massive truck have a head-on collision, upon which vehicle is the impact force
greater?
Which vehicle undergoes the greater change in acceleration?
Answer:
the bike will probly go flying and the truck will go to a stop and the truck will not flyover the bike bc the truck is heavier
Explanation:
The impact force and the change in acceleration of cycle will be greater.
We have a situation of head on collision between a bicycle and a massive truck.
We have to -
compare the impact forces of the vehiclescompare the change in acceleration of vehiclesWhat is head - on collision ?A head-on collision is a traffic collision where the front ends of two vehicles such as cars, trains, ships or planes hit each other when travelling in opposite directions.
According to the question -
Suppose that both the cycle and truck are moving with the same velocity v m/s.
PART - A
The difference between the mass of the cycle and truck is very large.
This means that the momentum of both cycle (c) and truck (t) will be -
p(t) >> p(c)
Hence, the impact force on the cycle is very very high.
PART - B
Since, the impact force on cycle is very high therefore the change in acceleration of cycle will be greater.
Hence, the impact force and the change in acceleration of cycle will be greater.
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A bird on a long migration flies 63 kilometers per hour for 2900
kilometers. How long does he fly?(round to nearest whole number)
8
Answer:
46
Explanation:
2900 divided by 63 (2900/63)
- 46.03174603
Rounded to the nearest whole number
is 46.
THE ANSWER IS 46
Answer:
46 hours
Explanation:
The media is a powerful influence because it
A.Encourages teens to live healthy lives
B.is constantly present
C. Provides healthy role models.
D.warns the audience of risk behaviors
The media is a powerful influence because it is constantly present around us.
What is media and how it is influenced?Medium is defined as a means of communication such as radio and television, newspapers, magazines, and the internet that can greatly influence people all around here.
The three types of media are news media, social media, and web media and it is also known as earned media shared media, and owned media. Other forms of modern media are print media, movies, video games, and television, etc.
The influence of mass media can affect many aspects of human life which can include voting, views, and beliefs of people, or changing an individual knowledge of a specific topic due to the provision of false information.
So we can conclude that option B is the right answer.
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Who is one woman who has contributed greatly to science? How?
How much time would the weight take to fall 120 m down the cliff if it was thrown downwards at 1.25 m/s?
Answer:
96 seconds
Explanation:
M/S formula
The weight would take 4.95 seconds to fall 120 m down the cliff if it was thrown downwards at 1.25m/s
What is the equation of motion?The equations of motion can be described as that those equation which established a relationship between the acceleration, velocity, time, and displacement of a moving b.ody
The mathematical form for the representation of the equations of motions:
[tex]v = u +at\\S = ut +(1/)2at^2\\v^2-u^2 = 2aS[/tex]
Given, the velocity with a weight with which it threw = 1.25 m/s
The distance covered by the weight of reaching the surface, S = 120 m
From the 2nd equation of motion, calculate the time that the weight will take to reach the surface:
S = u.t + (1/2) gt²
120 = 0 + (1/2) × 9.8 × t²
t = 4.95 s
Therefore, the weight will take 4.95 s to fall 120m down the cliff if it was thrown downwards at 1.25 m/s.
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mention four physical properties of physics
Which of the following is a unit of density?
Answer:
kilogram per
Explanation:
1. What three particles are found in an atom?
Answer:
Protons, Electrons, and neutrons
Answer:
protons electrons neutrons
Explanation:
Brian and Jack decided to investigate which water fountain at school has the coldest water. The two boys take measurements using identical equipment and return several minutes later with four temperature recordings. Surprisingly, even though the two boys measured the same fountains, their data showed different temperatures. Some of Brian's temperatures were lower than Jack's. Which statement would most likely explain the differences in their data? A) Brian walked around the school and Jack ran. B) Brian kept the thermometer in the water longer than Jack did. C) Jack guessed at his measurements and Brian did the real measuring. D) Brian used a Fahrenheit thermometer and Jack used a Celsius thermometer.
Answer:
b
Explanation:
he keep the thermoter in the water longer
Which best describes how an operating system works with the BIOS? It instructs the BIOS to complete a task. It allows user interaction with the BIOS. It translates instructions for the BIOS. It provides power to the BIOS.
Answer:
HERE
Explanation:
Which best describes how an operating system works with the BIOS? It translates instructions for the BIOS.
An operating system communicates with the BIOS by giving it instructions on how to carry out a task.
What is Bios?BIOS stands for Basic Input/Output System. It is a firmware program that is built into the motherboard of a computer or other electronic device. BIOS is responsible for performing the initial hardware checks and initialization during the boot process of a computer.
Here,
An operating system communicates with the BIOS by giving it instructions on how to carry out a task. The firmware program known as the BIOS (Basic Input/Output System) is integrated into the motherboard of a computer and is in charge of initializing hardware components and initiating the boot process. System calls and other low-level interfaces are used by the operating system to interact with the BIOS and request hardware resources. The operating system (OS) takes over and controls the management of the computer's resources after the BIOS has finished its startup activities and turned control over to it.
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can anyone help me out in dis i am struggling!
Answer:
I believe is is A because that is what google says
what is the rap method
Answer:
RAP strategy is one such paraphrasing strategy. This meta-cognitive strategy is also an acronym mnemonic, and assists students in recollecting facts, with paraphrasing and helps to improve their reading comprehension. Teaching the RAP method: The acronym, RAP stands for Read, Ask and Put.
the first law of thermodynamics states energy in a system is
During the first 40 s a truck traveled at a constant speed of 15 m/s. Find the
distance it traveled.
Answer:
600 m
Explanation:
Distance = speed × time
= (15)(40)
= 600 m
Round each of the following to 3 significant figures
c)2,300.2
d)10.26730
Answer:
c. 2300
d. 10.3
Explanation:
The making of the mind is a powerful place and what you feed it can affect you in a powerful way ^^
{NOT A QUESTION^^}
Answer:
yea that is very true ◠﹏◠✿
Explanation:
The depth of the troposphere is greatest over the tropics and least over the polar regions.
a) true
b) false
Answer:
a) true
Explanation:
True, the depth of the troposphere over Ecuatorian regions is about 18 kilometers and 17 kilometers in the middle latitudes, whereas it is just 6 kilometers over the polar regions.
Which statement is always true about objects which exert gravitational force on each other? (3 points)
They have mass.
They have speed.
They are a very large size.
They exist only in outer space.
Answer:
They have mass is always true.
Answer:
“they have mass” because if they don’t have mass they can’t exert force even if they have speed if they have no mass they can’t do anything or exert force
Explanation:
Plasma easily conducts electricity and responds to magnetic fields, but why?
Explanation:
Plasma can conduct electricity because plasma consists of electrically charged particles called ions, instead of uncharged particles such as atoms or molecules.
