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.
Question 1
10 pts
A hypotheses should only contain the independent variable.
True
False
Answer:
false
A hypothesis states a presumed relationship between two variables in a way that can be tested with empirical data. ... The cause is called the independent variable; and the effect is called the dependent variable.
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.
1. What three particles are found in an atom?
Answer:
Protons, Electrons, and neutrons
Answer:
protons electrons neutrons
Explanation:
Define limiting friction.
Answer:
Maximum value of static friction between two surfaces in contact is called Limiting friction. Limiting friction is directly proportional to the normal reaction between the surfaces in contact. Limiting friction can adjust itself to nullify the external force.
hope it helps......
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 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:
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.
mention four physical properties of physics
Find the solution for X.
3. -20 = -4x – 6x
Answer:
x=2
Explanation:
-20 = -10x
divide by 10
-x = -2
cancel the -s
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:
The weight of a rock is 8.5 pounds. Does this statement include
quantitative data or qualitative data? *
Answer:
quantitative
Explanation:
Who is one woman who has contributed greatly to science? How?
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
What does the independent variable do?
Answer:
The independent variable is what you, the scientist, changes, and it causes the dependent variable to change.
Explanation:
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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the diameter of a water molecule is 0.000000000275 m. how can this number be expressed in scientific notation.
Answer:
2.75 × e10
put the decimal in front of the first real number. put e to however many spaces from the original
The diameter of a water molecule is 0.000000000275 m, it can be expressed as 2.75 x [tex]10^{-10[/tex] m.
A water molecule has a diameter of 0.000000000275 m, which corresponds to 2.75 x [tex]10^{-10[/tex] m in scientific notation.
Numbers are stated in scientific notation as a coefficient, which is a number between 1 and 10, multiplied by a power of 10. The power of 10 in this situation is -10, and the coefficient is 2.75.
The number is incredibly small since the exponent is negative, which means the decimal point is 10 places to the left.
Extremely big or small numbers are frequently represented more compactly and clearly using scientific notation, which makes it simpler to work with and compare such quantities.
Thus, this can be expressed as 2.75 x [tex]10^{-10[/tex].
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A car accelerates from 12 m/s to 24 m/s in 6 seconds. Calculate its acceleration.
Answer:
[tex] \boxed{\sf Acceleration \ (a) = 2 \ m/s^2} [/tex]
Given:
Initial velocity (u) = 12 m/s
Final velocity (v) = 24 m/s
Time taken (t) = 6 seconds
To Find:
Acceleration (a) of the car
Explanation:
From equation of motion we have:
[tex] \boxed{ \bold{v = u + at}}[/tex]
By substituting value of v, u & t in the equation we get:
[tex] \sf \implies 24 = 12 + 6a \\ \\ \sf \implies 6a + 12 = 24 \\ \\ \sf \implies 6a = 24 - 12 \\ \\ \sf \implies 6a = 12 \\ \\ \sf \implies a = \frac{12}{6} \\ \\ \sf \implies a = 2 \: m {s}^{ - 2} [/tex]
[tex] \therefore[/tex]
Acceleration (a) of the car = 2 m/s²
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{2 \: m \:/{s} \: ^{2}}}}}}[/tex]
Explanation:
Initial velocity ( u ) = 12 m/s
Final velocity ( v ) = 24 m/s
Time taken ( t ) = 6
Acceleration of the car = ?
Finding the acceleration
[tex] \boxed{ \sf{acceleration = \frac{v - \: u}{t}}} [/tex]
[tex] \longrightarrow{ \sf{acceleration = \frac{24 - 12}{6} }}[/tex]
[tex] \longrightarrow{ \sf{acceleration = \frac{12}{6}}} [/tex]
[tex] \longrightarrow{ \sf{acceleration = \: 2 \: m/ {s} \: ^{2} }}[/tex]
Hope I helped!
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which type and form of energy are present in the picture when high frequency of wind is present?
Answer:kinetic and mechanical
Explanation:
How does heat from the sun reach us?At what speed does this transfer of heat takes place?
what law of motion is that representing ?
Explanation:
answer is the 3rd law of motion
I hope it will be helpful for you
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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:
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
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.
On a beautiful day you decide to go fishing with your younger brother Ben. Ben has not been fishing before so he doesn't know how to properly cast out his line. He puts the lure 24.5 cm above the water before letting it drop straight down. The line accelerates until it hits the water then continues to the bottom of the lake at a constant speed. It takes the lure 5.00 s to reach the bottom of the lake from when it was released by Ben.
Answer:
The question is not complete, below is the complete question:
On a beautiful day you decide to go fishing with your younger brother Ben. Ben has not been fishing before so he doesn't know how to properly cast out his line. He puts the lure 24.5 cm above the water before letting it drop straight down. The line accelerates until it hits the water then continues to the bottom of the lake at a constant speed. It takes the lure 5.00 s to reach the bottom of the lake from when it was released by Ben. How deep is the lake? (Assume the lure accelerates at the free fall rate of 9.8 m/s² until it hits the water.)
Answer:
depth of lake = 98cm
Explanation:
Total height of free fall = distance above water + depth of lake = h
for an object falling under the influence of gravity
[tex]h = \frac{1}{2} gt^2\\where:\\h = height\\g = acceleration\ due\ to\ gravity = 9.8\ m/s^2\\t = time = 5 s\\\therefore h = \frac{1}{2} \times 9.8 \times 5^2\\h = 0.5 \times 9.8 \times 25\\h = 122.5cm[/tex]
Total distance travelled = 122.5cm
Total distance travelled = height above water + depth of lake
122.5 = 24.5 + depth of lake
depth of lake = 122.5 - 24.5
depth of lake = 98cm
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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Which of the following is a unit of density?
Answer:
kilogram per
Explanation:
1. A toy car is marked to go at 0.5m/s, which of the following sets of
experimental numbers stay precise? *
a. 1.5m/s, 0.9m/s, 0.8m/s, 1.1m/s
O b. 0.6m/s, 0.7m/s, 0.61m/s, 0.62m/s
c. 2.1 m/s, 2.0m/s, 2.03m/s, 2.4m/s
d. 3.1m/s, 3.0m/s, 2.9m/s, 3.0m/s
Answer:
b. 0.6m/s, 0.7m/s, 0.61m/s, 0.62m/s
Explanation:
Precision of a measurement is the closeness of the experimental values to one another. Hence, experimental measurements are said to be precise if they are close to each other irrespective of how close they are to the accepted value. Precision can be determined by finding the range of each experimental value. The measurement with the LOWEST RANGE represents the MOST PRECISE.
Note: Range is the highest value - lowest value
Set A: 1.5 - 0.8 = 0.7
Set B: 0.7 - 0.6 = 0.1
Set C: 2.4 - 2.0 = 0.4
Set D: 3.1 - 2.9 = 0.2
Set B has the lowest range (0.1), hence, represent the most precise value.
How did the Planck mission help scientists learn about the age of the universe
Answer:
By using observations from the Atacama Cosmology Telescope (ACT) in Chile, the new findings match the measurements of the Planck satellite data of the same ancient light.
Explanation:
the first law of thermodynamics states energy in a system is
