A mineral with a hardness of 6 will scratch a mineral with a hardness of more than 6. true or false
The hardness of the water increases as the scale grows from 1 to 10. Therefore, the statement is false.
What is meant by hardness?The scale at which the hardness is measured is known as the Mohs scale. This scale is used to measure the concentration of the mineral in the water. The range of the scale is from 1 to 10.
The softest water will get a score of 1 whereas the hardest will be 10. For example, talc power is the softest having a score of 1 whereas diamond is the hardest material having a score of 10.
Identification of the hardness of the material is important to find out. The score of the hardness will help in understanding the properties of the material. The properties of water resistance are permanent distortion, penetration, and scratching.
Learn more about the hardness of water, here:
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how do scientist develop scientific explanations about subjects that are impossible to study through controlled experiments?
Name a unique trait about each planet in our solar system
Mercury: It is the closest planet to the sun, so it orbits the sun very quickly just in 88 days. Its surface is gray to orange in color and it is covered with craters. It is a small planet, just 4850 kilometers (~3000 miles) in diameter. The side of its surface which is facing the sun is extremely hot as 700oK.
2. Venus: Its surface is a brownish-yellow color because of its thick atmosphere which is composed of largely of sulfuric acid and CO2. Its size is a little over 12,000 kilometers (7300 miles) in diameter. It rotates the sun in 243.
3. Earth: It rotates the sun every 365 days (year) and rotates in its axis every 24 hours (day). Its size is a little more than 12,000 kilometers in diameter. This planet is different form other planets as it maintains life on its surface. It has a moon.
4. Mars: It takes 687 days to revolve around the sun. Its surface is covered with craters, volcanoes, and large canyons and it has a very cold atmosphere. It has two moons.
5. Jupiter: It is the largest planet of the solar system as a diameter of 142,980 kilometers. It orbits the sun every 12 years.
6. Saturn: It is a large planet as 120,536 kilometers. It orbits the sun in 12 years. It is well-known for its system of three rings, it has also 47 moons.
7. Uranus: It rotates the sun in 84 years, its size is 51,118 kilometers in diameter. It is surrounded by a system of nine rings.
8. Neptune: Its size is 49,500 kilometers in diameter. It orbits the sun every 165 years.
How do you get a scar from a pimple?
Which of the following is true of all minerals?
Made of many different elements
Come from the ground as crystals
Can be liquids, solids, and gases
Made of one or more elements from the periodic table
Answer:
Made of one or more elements from the periodic table
Explanation:
Minerals are natural occurring inorganic solid substance that have a definite crystal structure and definite chemical formula. The crystal structure in minerals are usually well organised. Mineral are made of one or more elements from the periodic table. Example of minerals formed from a single elements are carbon(graphite), gold and silver. Like for the gold which are called native elements rarely combines with other elements. The atoms, molecules and ions that formed the minerals are well structured in a geometric way.They are arranged in particular pattern. Minerals can also be formed from more than one elements example are the silicates minerals.
From the option A not all minerals are made from different elements but most metals are made from combination of different elements.
Not all minerals come from the ground as crystal some crystallize at the surface of the earth.
Minerals are not gaseous and liquid in nature. All minerals are solid in nature.
Minerals are made of one elements or more than one elements from the periodic table.
The picture above illustrate how mineral looks like.
Answer: Made of one or more elements from the periodic table
Explanation:
The process of cell division that creates genetic variety in cells is
cell fission
meiosis
mitosis
asexual reproduction
Why is crumpling a piece of paper a physical change and not a chemical change? Please help!!
Two parents have the genotype dd and DD for dimples. The presence of dimples is dominant. What are the chances that their child will have dimples?
In grafting, the plant with the root system is called the , and the portion of the plant with the buds is called the .
Answer:
In grafting, the plant with the root system is called the root stock , and the portion of the plant with the buds is called the scion
Explanation:
Grafting is a process of “vegetative mode of propagation “ in which two parts of same or two different species of plants are joined together to make them grow as a single plant. The part of the plant which is kept over and above the other plant is called the “scion” while the part of the other plant kept at the bottom is called a rootstock.
Thus, in grafting, the plant with the root system is kept at the bottom and hence it is called as root stock , and the portion of the plant with the buds is kept over and above the root stock and hence it is called as scion.
Which of the following is not a way that energy producing technologies can impact aquatic viability? a. waste products entering waterways b. disruption of water flow c. increased sedimentation d. filtration of pollutants
Answer: Filtration of pollutants
Explanation: The filtration of pollutants is not a way by which the energy producing technologies will affect the aquatic viability.
This is because removing the pollutants from water will improve the overall quality of water and it will not affect the viability of water. The flowing water or still water is highly polluted and it affects the aquatic life adversely.
To conquer these problem filtration of pollutants is necessary and this technique removes all the pollutants from water and makes the water clean without affecting its viability.
A 70 kg person travels to planet where he weighs 1750 N. what is the value G on the planet
Final answer:
The gravitational acceleration (g) on the planet where a 70 kg person weighs 1750 N is calculated to be 25 m/s² by using Newton's second law (F = ma).
Explanation:
The question pertains to the calculation of gravitational force on a person with a known mass on a different planet and finding the acceleration due to gravity (g) on that planet. In this scenario, a 70 kg person weighs 1750 N on another planet. The formula to find the acceleration due to gravity is given by Newton's second law (F = ma), where F is the force (weight) and m is the mass, and a is the acceleration due to gravity.
To find the value of g on the planet, we rearrange the formula to solve for a (which represents g in this context): g = F/m. By substituting the given values, g = 1750 N / 70 kg, we can calculate the gravitational acceleration on the planet. The calculation is as follows:
g = 1750 N / 70 kg = 25 m/s²
Therefore, the value of gravitational acceleration (g) on the planet is 25 m/s².
A(n)__________ is a long chain of amino acids.
P (purple) and p (white) are the dominant and recessive alleles for flower color in peas. Similarly, A (axial) and a (terminal) are the dominant and recessive alleles for flower position in peas. Two plants with the genotype PpAa are crossed. Which genotype is indicative of white axial flowers?
PpAa is indicative of white axial flowers.
PPAA is indicative of white axial flowers.
ppAa is indicative of white axial flowers.
Answer:
Option C, ppAa is indicative of white axial flowers.
Explanation:
It is given that Purple color (P) is dominant over white color (p). Thus in order to have a flower of white color , the flower must be homozygous recessive with an allele pair having two recessive alleles.
Similarly, Axial (A) is dominant over terminal (a) flower. Thus, a flower can be axial in two cases -
a) when both the alleles are same i.e AA
or
b) when one allele is A and the other one is a i.e Aa
Considering the above cases, all possible allele combination that will produce white axial flower are as follows -
ppAA, ppAa
Thus, option C is correct
Answer:
C
Explanation:
What theme is featured in Machiavelli’s The Prince?
A. the value of living a morally conscientious life
B. the importance and limits of political power
C. the desire to achieve quick and cutthroat results
D. the need to win regardless of the consequences
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B. the importance and limits of political power
Explanation:Niccolo Machiavelli was an eminent Italian author and statesman who in his best-known work, The Prince, described the means by which government may gain and maintain its power. He believed in gain of power by whatever means and to maintain it for long period of time. He said that gaining power is the only way to live with honor because the world is a place for the fittest people and not the weak ones. This famous theory is known as Realism in Political Science.
Answer:
B. The importance and limitis of political power
Explanation:
Machiavelli wrote The Prince in 1513, just after he was forced to leave Florence as a political exile. Dedicated to Lorenzo de’ Medici, the book is Machiavelli’s advice to the current ruler of Florence on how to stay in power. It was also his effort, though unsuccessful, to gain an advisory post in the Medici government. The Prince was not published until five years after Machiavelli’s death.
Machiavelli’s treatise makes a clear break from the Western tradition of political philosophy that preceded him. Beginning with Plato and Aristotle, the thinkers of this tradition were concerned with issues of justice and human happiness, and with the constitution of the ideal state. Until its final chapter, The Prince is a shockingly direct how-to manual for rulers who aim either to establish and retain control of a new state or to seize and control an existing one. Rather than basing his advice on ethical or philosophical principles, Machiavelli founds his political program on real-life examples. When explaining what a prince should or should not do in pursuit of his ambitions, Machiavelli cites the actions of well-known historical and contemporary leaders, both successful and unsuccessful. Throughout The Prince, Machiavelli explicitly aims to give an unsentimental analysis of actual human behavior and the uses of power. “I have thought it proper,” Machiavelli writes of a prince’s conduct toward his subjects, “to represent things as they are in a real truth, rather than as they are imagined” (p. 49).
Which of the following is not one of Newton's Laws of Motion?
Every action has an equal and opposite reaction.
An object at rest will stay at rest.
The force of gravity increases with mass and decreases with distance.
Force equals mass times acceleration.
Why is a squid considered a cephalopod
____________ have helped us learn about animals that are now extinct.
Observations
Written records
Fossils
Rocks
Consider the formula for glucose: C6H12O6. What does this indicate about the relationship of the reactants to glucose?
Answer:
The formula of glucose here states that it has 6 carbon molecules, 12 hydrogen molecules and 6 oxygen molecules.
Explanation:
Glucose is a product of photosynthesis is formed by the combination of carbon dioxide molecules and water molecules in the presence of sunlight.
Here, six carbon dioxide molecules would have reacted with six water molecules to produce a glucose molecules and release of 6 oxygen molecules.
Can anyone please help?
in some places, granite rock extends as deep as:
I think is 50 kilometers
Take a rubber band, and stretch it between the thumb and index finger of one hand. Hold it there for as long as you can.
At what state is the energy in the rubber band?
As your hand gets tired, what state of energy is it fighting against?
Release the rubber band from your finger. At what state is the energy in the rubber band as it is released?
Select all that apply. The Chordata phylum consists of _____.
tunicates
lampreys
stingrays
lancelets
trout
List the strengths and the weaknesses of the model used in this task
Answer:
I am on the same question it wont let me comment on their answer but its a model of the moon
Explanation:
How does a radio wave differ from a gamma ray? Frequency only Wavelength only Both the wavelength and the frequency Their speeds
Ik its not biology its just the only thing i saw
Describe four real-life examples of the results of scientific investigations?
Answer:
From the beginning of the science, there are several scientific investigations that took place to propose a hypothesis and test these by scientific methods if these are true or not.
The some of the real life examples of the result of these scientific investigation are
Technology that helps humanity by several possibilities, helps in the transportation, medicine or health sector by developing drugs, and electricity that helped daily life of a human as vital resources.
The primary curves of the vertebral column are the
Final answer:
The primary curves of the vertebral column are the thoracic curve and the sacrococcygeal curve. These curves increase the vertebral column's strength, flexibility, and ability to absorb shock.
Explanation:
The primary curves of the vertebral column are the thoracic curve and the sacrococcygeal curve. These curves are called primary curves because they are retained from the original fetal curvature of the vertebral column. The thoracic curve involves the thoracic vertebrae, while the sacrococcygeal curve is formed by the sacrum and coccyx. These curves increase the vertebral column's strength, flexibility, and ability to absorb shock.
Tiny structures in the cell that carry out the cell's activities are
mitochondria
nucleus
organelles
cyotplasm
A ________ is a model that imitates a real-world situation. What goes in the blank? Also my other question is, A _________ is an interpretation of an observation. What goes in the blank? Please help.
Why do scientists use significant digits?
1. Which of the following do chordates NOT have at any point in their lives? notochord pharyngeal gill pouches nerve cord none of the above
Answer:
The correct answer would be none of the above.
Explanation:
Chordata has 5 major characteristics that they have at some stage in their lives, a dorsal tubular nerve cord, a notochord, pharyngeal gill slits, a post- tail, and a thyroid/endostyle gland.
The notochord is a flexible, rod-like structure that is present in the development stage of all chordates and reason for the name of the phylum. Nerve cord is rise from the ectoderm and develops into a hollow tube. pharyngeal gill slits let water enter and exit the mouth during feeding.
Thus, the correct answer would be none of the above.