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?
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 statement best describes resistance? Resistance is how well a current will flow in a material and is measured in volts. how well a material conducts an electrical charge and is measured in ohms. the ability of a material to attract a positive charge to create a current. the ability of a material to repel neutral charges and is measured in ohms. Can any one help?
Answer:
How well a material conducts an electrical charge and is measured in ohms.
Explanation:
B
What is the mass of an object if a net force of 8.0 N causes it to accelerate at 1.1 m/s2?
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.
Cole and Blayne were attempting to push Hailey on a wheeled chair with enough force so Hailey would run into Mr Young. They figured out they needed a 50 N force to run the chair into Mr Young. Cole and Blayne were both applying force toward Mr Young. Cole was applying force a 20 N force to the left, and Blayne was applying (with all of his strength) a force of 15 N to the left.
What was the net force if we ignore friction?
A kilograms weighs more than two of these. *The answer is a 6-letter word that has an "o" as the letter, aka -o----*
Final answer:
The word fitting the description "a kilogram weighs more than two of these" with 'o' as the second letter is 'pound.' Understanding and converting between pounds and kilograms is essential for solving multi-step weight-related problems in mathematics and science.
Explanation:
The question asks, “A kilogram weighs more than two of these.” The answer is a 6-letter word with “o” as the second letter, which is “pound.” One kilogram is approximately equal to 2.20462 pounds, making a single kilogram heavier than two pounds. In the metric system, weights are often calculated in grams and kilograms, and comparing these units requires understanding of conversion factors. For example, solving multi-step word problems involving weights in grams or kilograms often necessitates the use of the four basic operations: addition, subtraction, multiplication, and division.
This understanding helps in various scenarios, including when weighing objects or substances in science, such as comparing the weight of gases. For example, a liter of oxygen gas weighs more than a liter of water vapor; differential weights like these highlight the importance of understanding weight units and conversions in practical applications.
how to convert 550 centimeters into meters?
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.
how does the current model of the atom differ from
j j thomas model
How does physics applied to being a teacher
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?
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.
an atom's mass number equals the number of
Answer:
2
Explanation:
I need help with this question ASAP!!!!
What is the difference between speed and velocity?
A) Velocity describes speed with direction.
B) There is no difference.
C) Velocity describes direction with position.
D) Velocity is used in space; speed is used on earth.
ASAP HELP!!
If the mass of two objects is increased, what is the effect on the force between them?
The objects repel each other with less force.
The objects attract each other with less force.
The gravitational force between the objects decreases.
The gravitational force between the objects increases.
Answer:
C- The gravitational force between the object decreases.
Explanation:
Explanation
close
Gravity is the force of attraction between all masses in the universe.
The magnitude of a gravitational force depends on
the masses of the objects
the distance between the objects
The gravitational force between two bodies decreases as their masses decrease.
Friction is generated when _____ interact with each other on sliding surfaces..... solids ,molecules, forces ,fluids
Answer:
B) Molecules
Explanation:
What type of electromagnetic wave can be used to transmit information?
(A)radio wave only
(B)microwave only
(C)neither a radio wave nor a microwave
(D)both a radio wave and a microwave
Both radio waves and microwaves can be used to transmit information, employing their electric and magnetic fields to carry signals for various communication technologies.
The type of electromagnetic wave that can be used to transmit information includes both radio waves and microwaves. These are just two categories within the electromagnetic spectrum which is employed for data transmission. Electromagnetic waves consist of both an electric field and a magnetic field that travel perpendicular to each other and are used in various technologies such as AM and FM radio, cell phones, and microwave ovens. Radio waves have longer wavelengths and are widely used for communications such as audio signals for radios, while microwaves have shorter wavelengths and are often used for high-speed data transmission like in WiFi networks.
IMPORTANT QUIZ!!!!!!!
the atomic number of an atom is the number of______.
A.protons and neutrons
B.protons
C.neutrons
D.electrons and neutrons
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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after brainstorming engineers may refine their ideas by making what???
PLEASE HELP!!
What can affect the properties of a substance?
A. only the types of atoms
B. only the arrangement of atoms
C. the arrangement and types of atoms
D. neither the arrangement nor the types of atoms
The answer is C. The arrangment and types of atoms.
What are the two factors that determine a material's density?
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
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.
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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Solve for x. 4(x+1)≤4x+3
Answer:
There is no solution for x.
Step-by-step explanation:
Consider the provided inequality.
[tex]4(x+1)\leq 4x+3[/tex]
Distributive property:
[tex]a(b+c)=ab+ac[/tex]
Use the distributive property to simplify the above inequality.
[tex]4(x+1)\leq 4x+3[/tex]
[tex]4x+4\leq 4x+3[/tex]
Subtract 4x from both the sides.
[tex]-4x+4x+4\leq 4x-4x+3[/tex]
[tex]4\leq 3[/tex]
Which is false, as 3 is neither greater or equal to 4.
Hence, there is no solution for x.
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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the net force on the propeller of a 3.2 kg model is 7.0 N forward. what is the acceleration of the plane
Answer:
Acceleration of the plane, [tex]a=2.18\ m/s^2[/tex]
Explanation:
It is given that,
Mass of the model, m = 3.2 kg
The net force acting on the propeller, F = 7 N
We need to find the acceleration of the plane. Let it is given by a. Using second law of motion, we can find the value of a. The mathematical relationship between the mass, force and the acceleration is given by :
[tex]F=m\times a[/tex]
[tex]a=\dfrac{F}{m}[/tex]
[tex]a=\dfrac{7\ N}{3.2\ kg}[/tex]
[tex]a=2.18\ m/s^2[/tex]
So, the acceleration of the plane is [tex]2.18\ m/s^2[/tex]. Hence, this is the required solution.
A honey bee flaps its wings 200 times per second. How much time is required for one wingbeat? Give your answer in milliseconds.
Answer:
The time is required for one wing beat is 5 millisecond.
Explanation:
Given that,
Frequency = 200 /sec
We need to calculate the time period
Using formula of time period
Time period is the reciprocal of the frequency.
[tex]T=\dfrac{1}{f}[/tex]
[tex]T=\dfrac{1}{200}[/tex]
[tex]T=0.005\ sec[/tex]
[tex]T= 5\ miliseconds[/tex]
Hence, The time is required for one wing beat is 5 millisecond.