. If a substance changes form one phase to another, is it still the same substance?
Answer:
Yes
Explanation:
A phase change does not change the chemical make-up of a substance. Phase changes are typically temperature dependent, and change only the movement and physical arrangement of the atoms and molecules in the substance. Water, for example, is composed of two hydrogen atoms attached to an oxygen atom by covalent bonds. That stays the same whether the water is solid (ice), liquid (water), or gas (steam). The chemical structure of water does not change as it goes through the different faces. It's still water. What does change is the speed at which the molecules move and how far apart they are as a result. Water vapor consists of molecules moving quickly and at random. As temperature drops, water molecules slow down. Since water is slightly polar, hydrogen bonds form between the molecules bringing them closer together.
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Answer: sheesh
Explanation:
What is the relative humidity of a dry-bulb temperature of 15°C and wet-bulb temperature of 12°C
The relative humidity of a dry-bulb temperature of 15°C and a wet-bulb temperature of 12°C is 71%.
What do you mean by Relative Humidity?Relative humidity may be defined as the proportion of atmospheric moisture present compared to the amount that would be present if the air were permeated.
Relative humidity can be calculated by subtracting the temperature of the dry bulb from the temperature of the wet bulb.
After getting a specific value, refer to the relative humidity chart at the particular value of the dry-bulb temperature.
Therefore, the relative humidity of a dry-bulb temperature of 15°C and a wet-bulb temperature of 12°C is 71%.
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Nervous System
STIMULUS – RESPONSE PERFORMANCE LAB 38 points
PURPOSE: To measure response time after visual, auditory, and tactile stimuli have been practiced.
MATERIALS: meter stick or a yard stick (If you don’t have one - something about three feet long and stiff will work. You could get cardboard for example and mark off the distances on it..)
PROCEDURE:
Place your arm on a desk or table top with your hand resting on the edge. Your thumb and forefinger need to be projecting over the edge and about 2cm apart.
Your LC, friend or family member will hold the meter stick in a vertical position so that the zero end of the meter stick is halfway between your thumb and forefinger. The holder of the stick will drop it without warning you. You are to catch the meter stick as soon as possible after it has been released. Record on the data table the number of centimeters the meter stick dropped before you caught it.
Repeat the procedure 9 more times.
Repeat the procedure in steps 2 and 3 but this time close your eyes and have your LC, friend or family member tell you the moment the meter stick is dropped. Repeat this 9 more times and record the data in the data table.
Repeat the procedure in steps 2 and 3 but this time use a tactile stimulus. Have your LC, friend or family member touch you as soon as the meter stick is dropped. Be sure your eyes are closed. Repeat 9 more times and record your data.
Repeat the procedure in steps 2 and 3 but this time your LC, friend or family member will try to distract you as they drop the meter stick. Repeat 9 more times and record your data. 20 pts
Signal/Distance
1
2
3
4
5
6
7
8
9
10
Visual Distance (cm)
Auditory Distance (cm)
Tactile Distance (cm)
Distraction Distance (cm)
ANALYSES AND CONCLUSIONS
1. How did the auditory response time compare to the other signals? 2pts
2. How did the tactile response time compare to the other signals? 2 pts
3. How did your response time change with practice? 2 pts
4. Rank the response time from the slowest to the fastest. 2 pts
5. From these results draw a conclusion about practice with regard to stimulus – response time. Remember to state your claim, use evidence, and then make a conclusion. 10 pts
Answer:
Explanation:
Place your arm on a desk or table top with your hand resting on the edge. Your thumb and forefinger need to be projecting over the edge and about 2cm apart.
Your LC, friend or family member will hold the meter stick in a vertical position so that the zero end of the meter stick is halfway between your thumb and forefinger. The holder of the stick will drop it without warning you. You are to catch the meter stick as soon as possible after it has been released. Record on the data table the number of centimeters the meter stick dropped before you caught it.
Repeat the procedure 9 more times.
Repeat the procedure in steps 2 and 3 but this time close your eyes and have your LC, friend or family member tell you the moment the meter stick is dropped. Repeat this 9 more times and record the data in the data table.
Repeat the procedure in steps 2 and 3 but this time use a tactile stimulus. Have your LC, friend or family member touch you as soon as the meter stick is dropped. Be sure your eyes are closed. Repeat 9 more times an
Antiangiogenesis drugs act on a malignant tumor by: a. promoting the immune response and removal of abnormal tumor cells. b. blocking hormonal stimulation of tumor cells. c. reducing blood flow and nutrient supply to tumor cells d. transporting radioisotopes into the tumor.Antiangiogenesis drugs act on a malignant tumor by: a. promoting the immune response and removal of abnormal tumor cells. b. blocking hormonal stimulation of tumor cells. c. reducing blood flow and nutrient supply to tumor cells d. transporting radioisotopes into the tumor.
Answer:
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It has
It has 4ixntsmgzxxxskria
Explanation:
During this time around the country and its a great deal with the same time, the first of which is the same as that of a new generation of the world and I have been using this method is to provide a more detailed description of a new generation and the second half of the season ❄️ the same as the one that is 8️⃣ the same as the first one to be a part of this is the best way ↕️ the same as the first time I have to say that the government has been the subject of a few of them are not the only ones that are in the process of being able to do it in a way that makes it a little bit of his life in a way ↕️ the first time I have to say I was in the middle of the day and night and I have been a little bit more about this and the other hand, the first of which is the same as that of a few of them are not the only ones that are in the process of being able to do that is the case for the first time in the past few ja and the second half of the season and the second half of the season ❄️ the first time I have to say I was in the middle of the day and night and day of the year and a half years ago when I get home from work the first time I have to say I was in the middle of the day and night
Select the correct answer from each drop-down menu. minerals are micronutrients required by the body for various key functions. the mineral is required to carry oxygen in the blood to all body tissues, and is a rich source of this mineral.
Minerals are micronutrients required by the body for various key functions. The functions of minerals are further discussed below.
What are functions of minerals?Minerals are part of the nutrients that makes up the six classes of food that is essential for proper health and growth of human beings.
The functions of minerals include the following:
helps in production of hormones,helps in production are of enzymes,helps in keeping your bones, muscles, heart, and brain working properly.Therefore, Minerals are micronutrients required by the body for various key functions.
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Answer:
iron and red meat
Explanation:
2. what is the trend between 20-30 years in the kelp population? explain.
The trend between 20-30 years in the kelp population is that it is reducing due to sea urchins eating kelp and clipping the bottoms, hence, stopping kelp from regrowing.
What is the trend in the Kelp population?Kelp is a form of giant seaweed found in ocean floors.
Kelp serve as food for certain sea animals such as sea urchins.
However, due to increasing number of sea urchins and increase in environmental pressures, the Kelp population reduced in the last 20 to 30 years.
Therefore, the trend between 20-30 years in the kelp population is that it is going down due to sea urchins eating kelp and clipping the bottoms, hence, stopping kelp from regrowing.
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The development of cars has been good in some ways and bad in others. The
car has allowed for better transportation but it is also responsible for a great
deal of pollution. Which activity helps solve the pollution problem through the
use of new technology?
O A. Building fewer cars
B. Encouraging people to ride a bus
OC. Building cars that give off less pollution
D. Encouraging people to walk more
Answer:
d is the correct answer
Explanation:
D. Encouraging people to walk more
so less pollution is made
Name and describe three measures of central tendency used to summarize data.
Which answer best explains the choice of materials used in this coffee
maker?
A. Plastic is used for the handle to slow the transfer of thermal
energy, because its electrons do not move freely.
B. Metal is used for the burner below the pot to speed the transfer of
thermal energy, because its electrons do not move freely.
c. Metal is used for the burner below the pot to slow the transfer of
thermal energy, because its electrons move freely.
D. Plastic is used for the handle to speed the transfer of thermal
energy, because its electrons do not move freely.
The best explains the choice of materials used in this coffee maker is metal is used for the burner below the pot to speed the transfer of thermal energy, because its electrons do not move freely.
What is used to make coffee?As an example, we can mention thermoses, scales, bottles and even special bottles. Regardless of what you prefer to use to prepare your pretão, the tip is to gradually build a real coffee kitchen. Thus, you find what you like most about the experience, which is the world of coffee.
In this case, we used Metal is used for the burner below the pot to speed the transfer of thermal energy, because its electrons do not move freely.
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How do flowers help other organisms in our environment?
Which birds of prey are the most common and are considered fierce hunters.
The most common birds of prey that are considered fierce hunters include eagles, hawks, and falcons.
Predating BirdsPredating birds or birds of prey are species of birds whose survival-hood depends on them hunting down other animals for food.
Birds of prey are usually equipped and well adapted to hunting their prey. These adaptations include well-developed claws and beaks, a special swooping ability, very sharp eyesight, and so on.
Examples of birds of prey include eagles, hawks, and falcons.
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A ________________ is the rod shaped part of a cell that carries the genes.
Question 2 options:
cell membrane
chromosome
phenotype
genotype
Answer:
The rod-shaped structures in the cell nucleus that contain genes are called chromosomes.
what is the smartest animal?
Answer:The smartest animal is a Dog to me but It is a CHIMPANZEES.
Explanation:
CHIMPANZEES.
What are the definitions of compression and tension
Answer:
Compression means a decrease in the volume of any object
Tension is the degree to which anything is stretched or strained
Explanation:
Hope this helps:).....if not then sorry for wasting your time and may God bless you:)
An acellular entity composed of a small circular RNA molecule without a capsid and capable of replicating its genome is known as
An acellular entity made up of a small circular RNA molecule without a capsid and capable of replicating its genome is known as viroid.
What is RNA?RNA is a complex high-molecular weight molecule that participates in cellular protein production and, in some viruses, replaces DNA as a carrier of genetic instructions.
Viroids are nucleic acid species with a unique structure and low molecular weight that cause a variety of illnesses in cultivated plants. Certain animal and human diseases may be caused by similar nucleic acid species. Viroids are the tiniest known infectious disease agents.
Viroids, unlike viral nucleic acids, are not encapsulated. Viroids multiply autonomously in cells of sensitive plant species, despite their small size.
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Why did the students leave the amylase and starch solutions in the water bath for five minutes in step 3
Answer:
Each enzyme functions at an optimum temperature. Below the optimum temperature, the enzyme's function slows, and will eventually become inactive. Above the optimal temperature, the enzyme's activity will slow. Too far above the optimum temperature and the enzyme becomes denatured (its shape changes) and it can no longer function. Amylase is the enzyme that breaks starch (amylose) down into maltose. The amylase and the starch were placed in the water bath to allow the reaction to occur at amylase's optimum temperature of 37 C.
How is a scientific experiment different from other investigations.
Explanation:
An experiment is a type of investigation, the most involved and accurate type. An experiment follows a set template of how to run. Scientists running experiments also have a question, but they predict the outcome by making a hypothesis.
Natural capital includes all of Earth's resources and processes that benefit
humans and other living things. What trend is occurring with Earth's natural
capital?
O A. Earth's natural capital is increasing rapidly as the human
population increases.
B. Ecosystems are replenishing natural capital faster than humans
are using it up.
O C. Humans are using up natural capital faster than it is being
replenished.
O D. Sustainable development is greatly reducing Earth's natural
capital.
Answer:C
Explanation:
just took
what do chromosons form from
Answer:
DNA wraps around proteins called histones to form units known as nucleosomes. These units condense into a chromatin fibre, which condenses further to form a chromosome.
Explanation:
Have a good day Btw dont worry bout my name
which statement about RNA is correct
a. tRNA bonds with mRNA, bringing in amino acids
b. rRNA helps tRNA make a copy of the DNA gene
c. mRNA carries the code of rENA to the nucleus
d. mRNA is made from tRNA drying transcription
Answer:
à
Explanation:
r
tRna bonds with mRna, bringing in amino acids
How is the lac operon
regulated?
A. It is regulated by chemical signals.
B. It is regulated by transcription factors.
C. It is regulated by the presence of lactose and the lac
repressor gene.
Now, noise pollution issues are
MOSTLY handled at the
A. federal level only
B. international level
C. local and state levels
D. federal and local levels
Answer:
the answer is local and state levels
Explanation:
After a forest fire, which type of organisms will begin secondary succession?.
Answer:
herbaceous plants
After a fire, species start to recolonize an area, beginning the secondary succession process. The first species to colonize are usually fast growing herbaceous plants, such as conifers or ferns, which require high levels of light.
Pioneering or early successional species are the kind of organisms that usually start secondary succession after a forest fire.
Thus, these creatures include grasses, herbaceous plants, and tiny shrubs that are small and have a rapid rate of growth. They have evolved to colonize and prosper in open, uncontrolled environments.
Pioneering species have developed systems that enable them to quickly germinate, develop, and reproduce while using the sunshine and nutrients that are accessible.
They support soil stability, moisture retention, and the development of additional plant species through improving environmental conditions. These early-successional species provide the way for the ultimate re-emergence of more mature trees and a complex forest ecosystem when secondary succession develops.
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An object is placed in an electric field. the object is not affected by the electric field. the strength of the electric field is then increased. what can be said about the object?
Answer:
neutron
Explanation:
In fact, a particle is affected by an electric field only if it is electrically charged. The neutron is electrically neutral (its charge is zero), so it does not interact with the electric field.
Answer:The object does not carry a charge.
Explanation:
Mitosis is a form of cell division in which one cell divides into two new cells. Each new cell has the same number of chromosomes as the original cell.
In which of the following processes does mitosis play a vital role?
Answer:
growth
Explanation:
as the living organism grow, it's as a result of cell division
Answer:
dividing the number of cells into four daughter cells
The values in a(n) _____________ code are continuous.
Answer:
data
Explanation:
A continuous variable is a quantitative variable that has an infinite number of possible values that are not countable. A continuous variable may take on every possible value between any two values.
what type of organisms take in atmospheric carbon dioxide?
ILL MARK BRAINLIEST
Human Impact on Resources
Project: Roads in a Rainforest
Dont anser with a oaragraph im not looking for that
Answer:
Human impact on resources is negative for many reasons why being deforestation
Roads in the rainforest would be negative impact because your destroying habitats to an already limited envirment
Explanation:
Which is the answer a b or c.
it's option A
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our sun is a star that is fueled by a specific type of nuclear reaction. which type of nuclear reaction is this?
Answer:
The reaction is called Nuclear Fusion