Answer:
Sagittarius A
At its center, surrounded by 200-400 billion stars and undetectable to the human eye and by direct measurements, lies a supermassive black hole called Sagittarius A*, or Sgr A* for short. The Milky Way has the shape of a spiral and rotates around its center, with long curling arms surrounding a slightly bulging disk.
Explanation:
Answer:
black hole is the answer
Explanation:
A thread holds two carts together on a frictionless surface. A spring is compressed between the two carts. After the thread between the two carts is cut the cart on the left with a mass of 1. 5 kg moves away with a velocity of 27 cm/s. What is the velocity of the cart on the right that has a mass of 4. 5 kg?.
The velocity of the cart on the right that has a mass of 4. 5 kg is 0.09 m/s.
Velocity is the rate of change of distance with respect to time.
It has the SI unit as m/sec.Mass on the left of the cart = m1 = 1.5 kg
on the left of the cart = v1 = 27 cm/s = 0.27m/s
Mass on the right of the cart = 4.5 kg
Velocity on the right of the cart = x
According to the law of conservation of linear momentum:
We can say that.
Initial momentum will equalize the final momentum.
And momentum is the product of mass and its velocity.
Assigning one of its velocity as negative because both are in different direction.
mathematically, (m1*-v1) + (m2v2) = 0
(1.5*-0.27) + (4.4*x) = 0
x = 0.09 m/s
So the velocity of the cart on the right side that has a mass of is 0.09 m/s.
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why cant we see our surroundings clearly when we enter a darkened cinema hall
Answer:
Because the pupil of the eye is very small in bright sunlight, very little light enters the eye when we enter a gloomy cinema hall from bright sunlight.
Explanation:
Answer:
well i mean its dark
darkened cinema hall
our eyes cant clearly see dark
Who conducted an experiment to demonstrate that air exerts pressure?
a) Newton
b) Ott Von Guericke
c) Benjamin
d) None of these
The heart rate range for high intensity exercise is ____
to ____
percent
Pls answer quickly
An alternate power source can be ____ driven by some form of prime mover(s)
on-site generator(s)
equipped with fully engaged locks
Patient Care Vicinity.
An alternate power source can be mechanically driven by some form of prime mover(s) equipped with fully engaged locks to ensure stable and reliable power generation. This type of power source is commonly used in healthcare facilities,
particularly in patient care vicinities where uninterrupted power is critical for patient safety and wellbeing. Prime movers such as diesel generators, gas turbines, and fuel cells can be used to drive alternators and produce electrical power. These prime movers are typically connected to a transmission system that includes a control panel, switchgear, and distribution panels to regulate and distribute power to the facility. In the event of a power outage or interruption from the main power grid, the alternate power source can kick in and provide power to essential equipment and systems until the main power source is restored. Overall, an alternate power source is an essential component of any healthcare facility's emergency preparedness plan and can ensure patient safety and wellbeing during critical situations.
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. in a tug-of-war, 13 children, with an average mass of 30 kg each, pull westward on a rope with an average force of 150 n per child. five parents, with an average mass of 60 kg each, pull eastward on the other end of the rope with an average force of 475 n per adult. assuming that the whole mass accelerates together as a single entity, what is the acceleration of the system?
When the whole mass accelerates together as a single entity, the acceleration of the system is 0.62 m/s²
To determine the acceleration of the system, the mass on one end of the rope must be subtracted from the mass on the other end of the rope.
The mass of each child is 30 kg. The number of children is 13.
Therefore, 30 x 13 = 390 kg is the total mass of the children.
The mass of each parent is 60 kg. There are five parents.
So the total mass of the parents is 5 x 60 = 300 kg.
Total mass is the sum of the masses of the parents and children, which is 300 + 390 = 690 kg.
The force applied by the children is 150 N/child, and there are 13 children
So the total force applied by the children is 150 x 13 = 1950 N.
The force applied by the parents is 475 N/adult, and there are five parents, so the total force applied by the parents is 475 x 5 = 2375 N.
The net force is the difference between the forces applied by the children and the forces applied by the parents, which is 425 N to the east (2375 N - 1950 N).
Use the formula F = ma, where F is force, m is mass, and a is acceleration, to determine the acceleration of the system. The formula should be rearranged to solve for acceleration. a = F/m
Substitute the values into the formula:
a = 425 N / 690 kg
acceleration:a = 0.62 m/s²
Therefore, the acceleration of the system is 0.62 m/s².
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a. Discuss the 1) coastal engineering projects, 2) phases of a coastal engineering project. b. A wave is approaching perpendicular to the 500 m long breakwater. The incident wave is 1.5 m high and 30 m long. Estimate the height of the wave on 1) the back side of the breakwater at a distance of 250 m from one of the ends, 3) at a distance of 60 m from one of the edges along the time which is at a 60-degree angle with the breakwater. c. A wave in water that is 15 m deep has a period of 11 s and a height of 1.4 m. a) calculate the water particle velocity and the pressure at a point 0 m ahead of the wave crest and 2 m below the still water level, b) calculate the horizontal and vertical displacement of the water particle orbit at this point
Coastal engineering projects involve the design and construction of structures to manage and protect coastal areas from erosion, floods, and other natural hazards.
In a wave approaching perpendicular to a 500 m long breakwater, the height of the wave on the backside at a distance of 250 m from one of the ends can be estimated using wave transformation principles.
However, the height of the wave at a distance of 60 m from one of the edges along a 60-degree angle with the breakwater requires additional information, such as wave direction and wave transformation equations, to provide an accurate estimate.
For a wave in water that is 15 m deep with a period of 11 s and a height of 1.4 m, the water particle velocity and pressure at a point 0 m ahead of the wave crest and 2 m below the still water level can be calculated using wave theory equations. The horizontal and vertical displacement of the water particle orbit at this point can also be determined using the properties of wave motion and particle orbits.
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hypsometer (upper fixed point
Answer:a device for calibrating thermometers at the boiling point of water at a known height above sea level or for estimating height above sea level by finding the temperature at which water boils.
Explanation:
1. What are the components of vector A?
2. What are the components of vector C?
3. Find a magnitude and direction (the counterclockwise angle with the +x-axis) of a vector that is equal to A + C?
4. Find a magnitude and direction (the counterclockwise angle with the +x-axis) of a vector that is equal to A + B?
Answer:
The answer is 4
Explanation:
The direction angle—or direction, for short—is the angle the vector forms with the positive direction on the x-axis. The angle θA is measured in the counterclockwise direction from the +x-axis to the vector ((Figure))
Click Oscillate in the upper-right corner, which will cause the electron to move on its own. Watch the
waves transmitted and received in the window. How does the wave change when it reaches the receiver?
The wave would be amplified when it gets to the receiver.
What are electron waves?We know that a wave is a disturbance along a medium which leads to the transmission of energy. In this case we can see that the electrons have been set into vibration as we can see in the question.
We have to know that this a longitudinal waves and that the waves will impinge on the surface of the receiver and cause an amplification of the wave that have been caused the electrons in motion. This is clear from the description that we have above.
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You throw a ball straight forward with a velocity of 20
m/s, from a height of 1 meter. How far will it be when it hits the ground after 0.45 seconds?
The ball will continue to advance at a speed of 2.0 m/s once it rolls off the edge of the table until it lands on the ground after 0.45 seconds.
Why do we do it?The ball is behaving just like it has been dropped. Nature is unconcerned by the fact that it is also advancing.
D=1/2gt2 and T=√2d/g
By entering the table's height and the gravitational acceleration, we can calculate the time in seconds:
t= √2(1.5m)/9.8m⋅s−2 = 0.553s
So, for a little bit longer than a half-second, the ball will be in the air (and thus able to move ahead). To find the distance travelled, we simply reverse the speed equation, s=dt, and insert in the speed and time:
d= 20m/s(0.553s)= 1.11m
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Select an item that is common in our society that you believe is elastic and, using two determinants of elasticity (pages 133-134), briefly explain why you believe this product is elastic.
Select an item that is common in our society that you believe is inelastic and, using two determinants of elasticity (pages 133-134), briefly explain why you believe this product is inelastic. Expectations are a minimum of one paragraph (4 to 5 sentences) for each question in the initial post.
There are no immediate substitutes for gasoline as public transportation is often limited and walking, biking, or taking a cab is not always feasible. Therefore, people may continue to purchase gasoline despite an increase in price.
One item that is common in our society that I believe is elastic is fast food. Elasticity is the degree to which changes in price affect demand for a good or service.
Fast food is elastic because it has many substitutes such as restaurants, home-cooked meals, and even other fast-food chains. Fast food is also highly responsive to price changes, which means that a small change in price can cause a large change in demand.
For example, a $1 price increase for a burger meal at a fast-food chain might cause many people to switch to a competitor with a cheaper price. Thus, fast food is an elastic product in our society.One item that is common in our society that I believe is inelastic is gasoline.
Gasoline is an inelastic product because it has few substitutes and people need it for transportation. If the price of gasoline increases, people may continue to purchase it even if it means spending more money because there are few alternative options.
Additionally, there are no immediate substitutes for gasoline as public transportation is often limited and walking, biking, or taking a cab is not always feasible.
Therefore, people may continue to purchase gasoline despite an increase in price.
For example, if the price of gasoline increases by $1, a consumer will still purchase gasoline because they require it to get to work or school. Thus, gasoline is an inelastic product in our society.
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One item in our society that I believe is elastic is the price of gasoline because of various alternatives to gasoline and the proportion of income spent. An item in our society that I believe is inelastic is medical treatment because of the necessity of medical treatment and lack of substitutes.
Firstly, the availability of substitutes contributes to the elasticity of gasoline. In our society, there are various alternatives to gasoline, such as electric vehicles or public transportation. When the price of gasoline increases, consumers have the option to switch to these substitutes, reducing their demand for gasoline. Conversely, when the price of gasoline decreases, consumers may choose to drive more or purchase larger vehicles, increasing their demand for gasoline. This flexibility in consumer choices demonstrates the elasticity of gasoline.
Secondly, the proportion of income spent on the product also influences the elasticity of gasoline. For many individuals, the cost of gasoline represents a significant portion of their overall budget. When the price of gasoline rises, consumers may have to make adjustments to their spending habits or seek alternative means of transportation to cope with the higher expenses. Conversely, when the price of gasoline decreases, consumers may have more disposable income to spend on other goods and services. This sensitivity to price changes further supports the elasticity of gasoline.
On the other hand, an item in our society that I believe is inelastic is medical treatment. Two determinants of elasticity that contribute to this belief are the necessity of the product and the lack of substitutes.
Firstly, the necessity of medical treatment makes it an inelastic product. When individuals require medical treatment, they often have no choice but to seek the necessary healthcare services regardless of the price. This is especially true for life-saving procedures or medications. The demand for medical treatment is driven by the urgency and importance of preserving one's health, which leads to a less responsive consumer behavior to price changes.
Secondly, the lack of substitutes also contributes to the inelasticity of medical treatment. In many cases, there are limited alternatives or substitutes available for specific medical treatments. For example, if a person requires a specific surgery or medication to treat a condition, they cannot easily switch to a different treatment option to lower their expenses. The lack of viable substitutes reduces consumer choice and makes the demand for medical treatment less responsive to changes in price.
In summary, the price of gasoline is elastic due to the availability of substitutes and the proportion of income spent on the product. On the other hand, medical treatment is inelastic due to its necessity and the lack of substitutes. These determinants of elasticity highlight the different levels of responsiveness to price changes in these two common items in our society.
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according to sir isaac newton, gravity depends on two factors. what are they?
Answer:
Mass and distance of the objects.
Explanation:
Let's use the planets for example. The Moon is smaller than the Earth so it is easier for the Moon to orbit the Earth because Earth's gravity is stronger. The Moon is also close enough to the Earth so that it can orbit. If the Moon was very far away, the strength of the Earth's gravity wouldn't reach it.
which one of these values is the lowest temperature?32°F O 270 K O 0° Ċ O 273K
The temperature which is lowest among these given values will be 270K, which means option B is the right answer.
Temperature is defined as the degree of hotness or coldness of an object. It means that the amount of energy which is stored in it to increase its degree of hotness.
In the given problem, the values are given in different systems. So to determine that which one is smaller, first we convert them into Celsius, so that all the units are same.
The relation between Fahrenheit and celcius is given as follows:
Temperature in celsius = 5/9(temperature in Fahrenheit - 32)
∴ Temperature in celsius = 5/9(32 - 32) = 0 Celsius
The relation between Kelvin and Celsius is given as :
Temperature in Celsius = Temperature in Kelvin - 273.15
∴ Temperature in Celsius = 270 - 273.15 = -3.15 Celsius
273 K will be equal to 0 Celsius using above relation.
Hence all the values are equal to zero except 270 K which is negative, hence coldest.
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what are MA and VR of a lever?
Explanation:
Mechanical advantage (MA) = Load/Effort. Velocity ratio (VR) = distance effort moves/ distance load moves in the same time
2. A 1.0 kg roller coaster is at the top of a 25m hill, and has a velocity of 8 m/s.
a. Determine the velocity of the roller coaster when it is halfway down the hill, at height of 12.5 m. (Ignore Friction)
b. What is the velocity of the roller coaster at the bottom of the hill assuming a force due to friction of 3.0 N, and the length of the hill is 45.0 m.
SHOW ALL WORK!
The car's acceleration can be calculated as: a = v2/R = (18.0 m/s) 2/(12.0 m) = 27.0 m/s2. The conventional method can be used to determine net force: 13500 N is equal to Fnet = m•a = (500 kg)•(27.0 m/s2).
What happens to a roller coaster's speed as it climbs a hill?It may slow down or decelerate when traveling uphill or straight ahead. Roller coasters accelerate as they travel down hills due to the force of gravity dragging them downward.
How do roller coasters use math?Calculus and other fundamental mathematical concepts are used to calculate the maximum speed, the angles of ascent and descent, and the height necessary for the automobile to climb the next hill. The roller coaster's safety is further ensured by these calculations.
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Of the following, which is a renewable energy resource?
a.
coal
c.
geothermal energy
b.
kerosene
d.
natural gas
Please select the best answer from the choices provided
A
B
C
D
coal or natural gas i think
gases are so much easier to squeeze into smaller volumes than liquids or solids because
Gases are so much easier to squeeze into smaller volumes than liquids or solids because they have high compressibility and low intermolecular forces.
Gases are composed of individual particles, such as atoms or molecules, that are in constant motion and have significant space between them. Unlike liquids and solids, the particles in a gas are not strongly attracted to each other. This results in gases having low intermolecular forces, which means the particles can move freely and independently.
Furthermore, gases have high compressibility, meaning their volume can be significantly reduced under pressure. When a gas is subjected to compression, the particles can be brought closer together, occupying a smaller volume. The ability of gases to be easily compressed is due to the large empty spaces between gas particles and the weak intermolecular forces.
In contrast, liquids have stronger intermolecular forces compared to gases. The particles in a liquid are closer together and have less freedom to move. Liquids are relatively less compressible compared to gases, as the intermolecular forces resist compression and keep the particles close to each other.
Solids, on the other hand, have even stronger intermolecular forces and a highly ordered arrangement of particles. The particles in a solid are tightly packed and have limited mobility. Solids have negligible compressibility, as the intermolecular forces prevent significant changes in their volume.
In summary, gases are easier to squeeze into smaller volumes than liquids or solids because they possess high compressibility and low intermolecular forces. These properties allow gas particles to move more freely and be brought closer together under pressure, resulting in a greater reduction in volume compared to liquids and solids.
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Solve for w.
-w+150 = 220
Answer:
w = -70
Explanation:
\(-w+150 = 220\)
\(-w = 70\)
\(w = -70\)
Answer: w = -70
Explanation:
To solve, we will isolate with inverse operations.
Given:
-w + 150 = 220
Subtract 150 from both sides of the equation:
-w = 70
Divide both sides of the equation by -1:
w = -70
Question 5
Joan wants to decrease her BMI number. How can she achieve her goal?
A. Joan can lose some weight
B. Joan can stretch and get taller
C. Joan can have her blood pressure checked.
D. Joan can take medication
2. 2. A drawing that shows the outline of an object is called
The room temprature (25 C) fats in unsaturated fatty acids are
Unsaturated fats have one or more double bonds inside their fatty acid chains. The two carbons on the hydrocarbon molecules each have triple or double bonds, and hydrogens cannot saturate them. They are also liquid
What quantity/quantities change when a light wave move from air to water, and how does it/do they change
When a light wave moves from air to water, two quantities that change are the wave's speed and direction.
The change in these quantities is due to the change in the refractive index of the medium.
Speed:
The speed of light in a medium depends on the refractive index of that medium. When light passes from air to water, the refractive index of water is higher than that of air.
As a result, the speed of light decreases as it enters the denser medium of water. This decrease in speed is described by Snell's law, which relates the angle of incidence and refraction of light at the interface between two media.
Direction:
The direction of the light wave also changes as it moves from air to water. This change in direction is known as refraction. Refraction occurs because the change in speed of the light wave causes it to bend at the interface between the two media.
The bending of the light wave is governed by Snell's law, which states that the angle of incidence is related to the angle of refraction by the refractive indices of the two media.
In summary, when a light wave moves from air to water, its speed decreases and it changes direction due to the change in the refractive index of water compared to air.
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When the switch is closed electrons will flow from.
The statement is true, when the switch is closed electrons will flow.
What is current?Current can be defined as the rate of flow of charges or electrons in a given circuit.
Q = It
I = Q/t
where
Q is charget is timeI is currentWhat is a Closed circuit?A closed circuit is a type of circuit in which the wire connection of the circuit is complete and in which current flows.
Switch can be used close or open a circuit.
Thus, the statement is true, when the switch is closed electrons will flow.
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what is potential difference
Answer:
VOLTAGE
Explanation:
Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. ... A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit
Leon is testing an unknown
substance and observes that the
substance retains its volume and
shape when placed in different
containers. Which phase of matter
is the substance most likely in?
The observation that a substance retains its volume and shape when placed in different containers indicates that the substance has a fixed volume and shape, which is a characteristic of a solid.
Solids have a fixed shape and volume because the particles that make up a solid are packed tightly together and held in a fixed position by intermolecular forces. As a result, solids maintain their shape and volume even when placed in different containers or when subject to external forces.
In contrast, liquids do not have a fixed shape, but rather take on the shape of their container. They do, however, have a fixed volume. This means that a liquid would change its shape to match the shape of its container, but its volume would remain constant.
Gases, on the other hand, do not have a fixed shape or volume. They take on the shape and volume of their container and are highly compressible.
Based on the observation that the substance retains its volume and shape when placed in different containers, it is most likely in a solid state. However, further testing may be needed to confirm this, as some liquids and even some gases can also exhibit a degree of fixed volume and shape under certain conditions.
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force of 550 N. Calculate the magnitude and direction of the resultant force exerted on the centre of the rope
Answer:
I do not car :D
Explanation:
The horizontal component of the force acting on the rope is 200 N and the vertical component is 550 N. Then the resultant force is 585.2 N vertically.
What is force ?Force is an external agent acting on a body to change its motion or to deform it. There are various kinds of forces such as magnetic force, gravitational force, nuclear force etc.
The resultant force acting on an object depends on the magnitude and direction of all the forces acting on it.
The horizontal force = 400 N
angle of inclination = 30°
Fnet = 400 sin 30 = 200 N
Vertical force Fv = 550 N
then resultant force = √(Fh ²+Fv²)
= √(550²+200²)
= 585.2 N
Therefore, resultant force exerted on the center of the rope is 585.2 N in the vertical direction.
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Your question is incomplete. But your complete question is as follows:
A force of 400 N is exerted at an inclination of 30 degree horizontally on a rope and a force of 550 N is applied vertically. Then Calculate the magnitude and direction of the resultant force exerted on the center of the rope.
If a vector C is defined to be the sum of these two vectors (i.e. C = A + B) which of the following are true about the magnitude of C? Choose all that apply.
Cmax = (1^2 + 10^2)^0.5
Cmin = 9
Cmax = 10
Cmin = 0
Cmin = (1^2 + 10^2)^0.5
Cmax = 11
Cmax = 11 and Cmin = 9
When two vectors are added, let's say a and b, their resultant, let's say c is given by
c = √(a² + b² + 2ab cosΦ)
where Φ is the angle between them.
Assuming in given question a = 10 and b =1
so resultant c = √(10² + 1² + 2×10×1× cosΦ)
for Cmax, cosΦ = 1, a and b are parallel
so Cmax = √(a² + b² + 2ab)
Cmax = a + b
Cmax = 10 + 1
Cmax = 11,
similarly for Cmin, cosΦ = -1, a and b are antiparallel
so Cmin = √(a² + b² - 2ab)
Cmin = a- b
Cmin = 10 - 1
Cmin = 9
Therefore, Cmax = 11 and Cmin = 9.
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Please help urgent - Thank you
QUESTION 2 (20 Marks) Explain the elements of the internal
environment in an organization using examples of your own.
QUESTION 3 (20 Marks) Critically examine the determ
Some of the most important elements in the internal environment of an organization are the organizational structure, the organizational culture, and the leadership style.
What elements make up the internal environment in an organization?Organizational Structure: This refers to how roles and responsibilities are organized. For example, a company may have a hierarchical structure, or it may adopt a flat organizational structure.Organizational Culture: This includes values, beliefs, attitudes, and norms. For instance, a company may foster an innovative culture or a traditional one.Leadership Style: This refers to the type of interaction between a leader and the members of the team that can be collaborative or authoritative.Learn more about organizations in https://brainly.com/question/12825206
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what are examples of solutions in your every day life? select one or more: table salt vinegar rubbing alcohol tea pure water mouthwash
Solutions are mixtures where the solute is evenly distributed throughout the solvent. Examples of solutions in daily life include mouthwash, vinegar, rubbing alcohol, tea, and table salt in water.
A solution is a sort of mixture in which a solute and a solvent are dissolved into one another to create a homogenous combination. The solute is that which dissolves, whereas the solvent is that which causes the solute to dissolve. For instance, table salt is a typical solute that can be dissolved in water to create a saltwater solution. In a similar way, vinegar is an acetic acid and water solution. Tea is a mixture of several chemicals, whereas rubbing alcohol is an isopropyl alcohol in water solution.
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