Final answer:
Adding soap to water decreases its surface tension due to the interaction between soap molecules and water, resulting in fewer drops of water fitting on a penny.
Explanation:
Yes, adding soap to water will affect how many drops of water will fit on a penny. This is because soap reduces the surface tension of water. Normally, water has a high surface tension due to the polar nature of water molecules, which allows it to pile up in drops. However, when soap is added, the soap molecules disrupt the water's cohesive forces by inserting themselves between water molecules.
The ionic-salt end of the soap molecule dissolves in water, while the non-polar hydrocarbon tail sticks out, reducing the attraction between water molecules. This results in lower surface tension, causing the water to spread out more thinly and not pile up as effectively on the surface of a penny. Therefore, you would expect fewer drops of water to fit on a penny after soap has been added to the water.
What happens when aluminum fills its valence shell?
A. Three electrons are lost, creating Al ^ +3
B. Three electrons are gained, creating Al ^ -3
C. Three electrons are gained, creating Al ^ +3
D. Three electrons are lost, creating Al ^ -3
Answer:
Correct answer is B. Three electrons are gained, creating Al ^ -3
Explanation:
Aluminum in its valence shell has 3 electrons, this shell can have a maximun of 6 electrons. Then, to fill its valence shell, 3 electrons must be gained, and then the valence shell would have 6 electrons and would be complete.
If 3 electrons are gained, then Aluminum, would have a charge of -3, since each electron gained gives negative charge to the atom.
Al^ -3 is a ion of aluminum with charge -3.
PLZZZZ HELP!!!! What is unusual about organisms in the domain Archaea?
A. They are very large.
B. Their rate of reproduction is very fast.
C. They are complex, multicellular organisms.
D. They live in extreme environmental conditions.
The moon's phases are caused by (4 points)
A.the alignment of the planets
B.the alignment of the Earth, moon, and sun
C.eclipses of the sun
D.planets moving across the face of the moon
The answer is B. The alignment of the moon, earth, and sun.
Which of the following states of matter has no definite shape but does have a fix volume
a solid
b liquid
c gas
d plasma
B: Liquid is the correct answer
IMPORTANT QUIZ!!!!!!!
the atomic number of an atom is the number of______.
A.protons and neutrons
B.protons
C.neutrons
D.electrons and neutrons
calculate the speed of a car in miles per hour that is flashed on a speed camera covering a 20m distance in 0.5 seconds.
What is a verb phrase
A force of 20 N acts toward the east. Another force of 27 N acts at the same point toward the west. What is the magnitude and direction of a third force that produces a resultant of 10 N toward the east?
A cluster of galaxies containing very few galaxies is known as
Answer is a Poor Cluster.
Answer:
A group of galaxies forms a cluster.There are two types of clusters of galaxies.
Rich clusterPoor clusterA rich cluster contains more than thousand galaxies.
A poor cluster contains less than thousand galaxies. Milky way is a part of poor cluster- the local group which has more than fifty galaxies.
Thus, a cluster of galaxies containing very few galaxies is known as poor galaxy.
A truck driver travels 55 km in 1 hour he then drives a speed of 35 km/h for two hours next he drives 175 km in three hours. what was his average speed?
The average speed of a truck driver is 50 km/hr.
Given:
A truck driver travels 55 km in 1 hour he then drives at a speed of 35 km/h for two hours next he drives 175 km in three hours
To find:
The average speed of a truck driver.
Solution:
Distance traveled by a truck driver in 1 hour = 55 km
Speed of a truck driver after in next 2 hours =35 km/hr
Distance traveled by a truck driver in these 2 hours = [tex]35 km/hr \times 2= 70 km[/tex]
Distance traveled by a truck driver in last 3 hours = 175 km
Total distance traveled by truck driver :
[tex]= 55 km + 70 km + 175 km = 300 km[/tex]
Total time taken by the truck:
[tex]=1 hr + 2 hr + 3 hr = 6 hr[/tex]
The average speed of the truck driver:
[tex]=\frac{\text{Total distace covered}}{\text{Total time taken}}\\\\=\frac{300 km}{6 hr}=50 km/hr[/tex]
The average speed of a truck driver is 50 km/hr.
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Describes what happens to the amplitude of a wave as it moves away from its source and why this occurs.
Final answer:
The amplitude of a wave decreases as it moves away from its source because the wave's energy is distributed over a greater area. The amplitude's reduction is exponential, with a constant fractional decrease over each unit of distance, but the speed of the wave remains constant.
Explanation:
As a wave moves away from its source, its amplitude typically decreases. This occurs because the energy of the wave is spread over a larger area as it propagates. It is important to note that the amplitude of a wave does not depend on its frequency or speed, but rather on the energy it carries. In the case of a spherical wave, the amplitude decreases because the energy must be shared among more particles in the outer, larger shells of the wavefront, leading to each particle having less energy and thus reducing the amplitude.
Furthermore, the reduction in the amplitude of a wave that undergoes absorption is exponential according to the principle of superposition. This means that for each unit of distance the wave travels, the amplitude decreases by a constant fraction. However, this reduction in energy does not imply that the wave slows down; the speed of the wave remains constant unless the medium through which it is traveling changes.
psychoanalytic theory originated with
Psychoanalytic theory originated with Sigmund Freud and is a key concept in psychology.
Explanation:The psychoanalytic theory originated with Sigmund Freud, an Austrian neurologist. Freud developed this theory in the late 19th and early 20th centuries and it became one of the most influential and widely known theories of psychology. According to psychoanalytic theory, behavior is driven by unconscious processes and childhood experiences play a significant role in shaping adult personality and behavior.
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What are the two factors that determine a material's density?
how does the current model of the atom differ from
j j thomas model
Suppose you balance a 1.6-kg ball on the tip of your finger, which has an area of 1.1 cm2 .whats the pressure of your finger
What Is the mass of 7.50 mol of uranium
Final answer:
The mass of 7.50 moles of uranium is 1785.375 g, calculated by multiplying the molar mass of uranium (238.05 g/mol) by the number of moles (7.50).
Explanation:
The question seeks to find the mass of 7.50 moles of uranium. Considering the molar mass of uranium, specifically isotope U-238 which is commonly referred to in problems regarding uranium mass calculations, is 238.05 g/mol. To find the total mass of 7.50 moles of uranium, we use the formula:
Mass = molar mass × number of moles
Thus, the mass of 7.50 mol of uranium is:
238.05 g/mol × 7.50 mol = 1785.375 g
This calculation plainly demonstrates how the molar mass of a substance can be utilized to find the mass of a given number of moles of that substance, an essential concept in chemistry, especially in the field of nuclear chemistry where isotopes such as uranium are frequently discussed.
Small college has 2523 students in 1994 and 2891 students in 1996 if the enrollment follows a linear growth pattern how many students should the college have in 2006?
two examples of ways that physicists model the physical world
Answering the question, three examples of ways that physicists model the physical world include:
DiagramsEquations Computer simulationsComputer simulations refer to the reproduction of behavior of a system with the use of a computer to simulate the results of a mathematical model that is linked with the system.
Further ExplanationComputer simulations are a tool that is very useful for mathematical modeling in various natural systems in physics.
Physicists write the rule of our universe using equations. Equations are an aspect of one of the models used by physicists to explain a particular situation.
Physicists use a diagram to convey information. It is a symbolic representation of information with the use of visualization techniques. Diagram provides other means for people to better understand information and process its importance.
Physics predictions about the physical world mainly depend on numerical stimulation, mathematics and empirical observations and Physicists models the physical world based on invariances and laws which are built on mathematical models.
The purpose of physics is to explain or describe everything around us. It described virtually everything around us accurately by deploring the law of physics.
However, physics is considered a natural science because it is based on mathematical analysis which is geared towards findings qualitative physical law for the physical world.
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examples of ways that physicists model the physical world https://brainly.com/question/10869755KEYWORDS:
physicistsphysicsmodelsphysical worldcomputer simulationsdiagramsequationsWe have that
Two examples of ways that physicists model the physical world is Through
Equations FormulationsDiagrams
From the question we are told that
Two examples of ways that physicists model the physical world
Generally
We First define a Physicists
A physicists is a Scientist,A Physicists is a Scientists that deals meanly on the Discipline of PhysicsThe Discipline of Physics deal with the interaction between matter and energy and Understanding the working principle of Nature
Therefore
Two examples of ways that physicists model the physical world is Through
Equations FormulationsDiagramsFor more information on this visit
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Two families meet at the park at 10:00am. Each family uses a different way of transportation to get there. The Gonzalez family leaves at 9:00am and drives 90 km on a highway. The Rivera leave at 9:30am and ride the train 30km. What is the average speed for each family’s trip? Which family travels at the faster speed?
Can someone explain subshell/electron configuration to me?
an atom's mass number equals the number of
Answer:
2
Explanation:
Is there a point at which no more sodium and chloride ions will dissolve? How do you know?
How does physics applied to being a teacher
Your science teacher gives you three liquids to pour into a jar. After pouring, the liquids layer as seen here. What property of matter prevents the three liquids from mixing together to form a solution?
The property that prevents the liquids from mixing is density. Liquids have a set volume but don't have a fixed shape, allowing them to layer according to their density when combined in a container. The viscosity of the liquids can also affect their ability to mix.
The property of matter that prevents the three liquids from mixing together to form a solution is the density of each liquid. Matters most commonly exist as a solid, liquid, or gas; these are the three common phases of matter. Solids have a definite shape and volume, while liquids have a definite volume but not a definite shape, and take the shape of their container. Gases neither have a definite shape nor a definite volume. When liquids of different densities are combined, they layer according to their densities, with the least dense liquid at the top and the most dense at the bottom. This separation occurs because denser liquids are heavier per unit of volume and will not mix readily with lighter (less dense) liquids unless a force is applied to shake or stir them into a suspension or solution. It is also important to understand that the phases of matter and what constitutes a fluid, as liquids and gases, yield to shearing forces unlike solids. The capacity for a liquid to flow easily or quickly is determined by its viscosity. Because our three liquids have not mixed to form a homogeneous mixture, we can conclude that their different densities and potentially their varying viscosities have led to the layering effect observed.
True or false scientific inquiry incorporates many scientific methods
The correct answer for the given statement above would be option
A. TRUE.
Explanation:
Scientific inquiry is a cooperative and coordinated struggle to search out, describe, describe and predict natural phenomena. Scientific analysis progresses within a continuous process of examination, data collection, interpretation, and interpretation.
Your friend Amanda suffers from a condition that reduces her blood's ability to carry oxygen.which of the following is the name of the condition?
7. The outermost electrons of the element vanadium (atomic #23) are in which energy level of the atom? How do you know?
If we use _______ to build the roof of the house, then the temperature inside the house will remain cooler.
Wood,Clay Brick,Iron,Aluminum,Copper,
Nickel
Answer:
Wood and clay brick.
Explanation:
If we use wood and clay brick to build the roof of the house the temperature inside the house will remain cooler. As we know wood and clay are non conductor of heat so they not transfer sun's heat inside the room and room remains cooler. On the other hand aluminium, copper and nickel are metals and are good conductor of heat as well they transfer environment's heat inside the room.
What is an advantage of being a single-celled organism
Being a single-celled organism offers the advantage of carrying out all necessary life processes independently, enabling efficient resource management, reproduction, and adaptation. It showcases biological organization within a single cell, allowing for versatility and adaptability in various environments.
Explanation:One significant advantage of being a single-celled organism is the ability to carry out all of life's processes independently, without the need for cooperation or division of labor seen in multicellular organisms. This autonomy allows single-celled organisms to efficiently manage resources, reproduce, and adapt to their environment with a streamlined organizational structure. From the intake of nutrients to reproduction, these organisms perform essential life functions within a single cell, showcasing an impressive level of biological organization and flexibility. Single-celled organisms, such as bacteria and protists, exhibit specialized behaviors despite their simple structure, including directed motility and predation, which enable them to thrive in various environments. Additionally, the absence of specialized cells means that each cell must be proficient in multiple tasks, providing a versatile and adaptive approach to survival.
The Colonial Theory suggests that multicellularity arose from the cooperation among single cells, highlighting the evolutionary advantages of single-celled life forms in pioneering new ecological niches. This evolutionary step underpins the diversity of life we observe today, with multicellular organisms developing complex structures and functions from these humble beginnings. Despite their simplicity, single-celled organisms play a crucial role in the biosphere, serving as foundational elements of ecosystems and driving both ecological and evolutionary processes.
A sunflower turns its head toward sunlight. What triggers this behavior in a sunflower?
Answer:
phototropism
I hope this helps