The reason some regions of the Milky Way's disk appear dark is because
stars in this direction are obscured by interstellar dust.
Astronomers have observed many different stars at each stage of their formation process. They have moved away from the Sun over the past 4.5 billion years. Location-to-location density variation increases as the cloud collapses. Once a protostar with a mass of less than 0.08 solar mass is formed, its internal temperature never reaches a sufficient level to initiate thermonuclear fusion. This quirky star is called a brown dwarf and sits between a planet (such as Jupiter) and a star. Coalsacks are clouds of interstellar dust about 600 light-years away that block light from the stars from reaching us. It is a type of celestial object called a dark nebula. The "inside" star that can be seen with binoculars is actually closer than the coal sack itself.
Learn more about thermonuclear here-
https://brainly.com/question/12933041
#SPJ4
a 8-kg object moves down vertically a distance of 3 m. its potential energy has changed by approximately how much?
A 8-kg object moves down vertically a distance of 3 m. its potential energy has changed by approximately it has increased by 24 J.
What is Potential Energy?
An item may store energy according to its location, as we all know.In the instance of a bow and arrow, the bow stores some energy as it is drawn, and this energy is what gives the arrow its kinetic energy when it is released.Similar to this, a spring accumulates energy as it is moved away from its equilibrium state, which we can notice by the tension our hands experience when we stretch it. Potential energy is a type of energy that is created when anything changes position or condition.However, Let's study the definition of potential energy and its formula before moving on to instances and the potential energy unit.
To learn more about Potential energy do follow
https://brainly.com/question/13997830
#SPJ4
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are.
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are C) smaller.
What is Relativistic speed?This is roughly 186,282 miles per second, or "c," the symbol for light speed in mathematics. Nothing in the universe can move faster than light, according to physicist Albert Einstein's theory of special relativity, which forms the foundation of much of modern physics.
Therefore, Relativistic speed is the rate at which relativistic effects are important for achieving the appropriate level of measurement precision for the event under study. The differences between values calculated by models that take relativity into account
Learn more about relativistic speeds from
https://brainly.com/question/28224010
#SPJ1
See full question below
To outside observers, the overall sizes of objects traveling at relativistic speeds are
To outside observers, the overall sizes of objects traveling at relativistic speeds are
A) larger.
B) the same size.
C) smaller.
How does magnetic force affect the energy in a system of magnets when the magnets are released and begin to move?.
When two magnets in a system are released and begin to move, the magnetic energy brings about kinetic energy.
The magnets that are mentioned here surely have some mass. The magnetic force here is the force that is exerted by a magnet in the region around it and can be attractive or repulsive.
When a magnet is pulled and then released, it overshoots and starts jumping back and forth, losing a bit of energy during this jumping. This loss of energy results in the increase of kinetic energy in the system, by converting potential energy to kinetic energy.
Learn to know more about Kinetic Energy on
https://brainly.com/question/29213676
HELP ASAP (this is science)
Changes in both biotic and abiotic factors in an ecosystem's food web may affect the members of the food web because they are in equilibrium (Option C).
What is the homeostatic state of internal equilibrium?In an ecosystem, the homeostatic state of internal equilibrium refers to the conditions required to maintain the stability of the food web, which are associated with biotic and abiotic conditions that interact in the ecosystem.
Therefore, with this data, we can see that the homeostatic state of internal equilibrium depends on both biotic and abiotic factors.
Learn more about the meaning of the food web here:
https://brainly.com/question/2179
#SPJ1
The value of gravitational potential energy
A) can vary depending on the zero point
B) is always measured from the center of the Earth
C) is fixed for a specific height
D) depends only on the height above the Earth's surface
a 77.3-kg man is traveling upward in an elevator at a constant velocity of 9.9 m/s. what is the normal force acting on him?
The normal force acting on a 77.3-kg man is traveling upward in an elevator at a constant velocity of 9.9 m/s is 757.54 N
∑ Fy = m a
Fn - Fg = m a
Fg = m g
Fg = Force of gravity
m = Mass
g = Acceleration due to gravity
Fn = Normal force
m = 77.3 kg
g = 9.8 m / s²
Fg = 77.3 * 9.8
Fg = 757.54 N
Since velocity is constant, a = 0
Fn - Fg = 0
Fn = Fg
Fn = 757.54 N
Therefore, the normal force acting on him is 757.54 N
To know more about normal force
https://brainly.com/question/13340671
#SPJ4
A lion with a mass of 190 kg is chasing a gazelle with a mass of 15 kg. The distance between the lion and the gazelle is 2 meters. A. How much gravitational force does the lion exert on the gazelle? b. How much gravitational force does the gazelle exert on the lion? remember to identify all data (givens and unknowns), list equations used, show all your work, and include units and the proper number of significant digits to receive full credit.
A lion with a mass of 190 kg is chasing a gazelle with a mass of 15 kg. The distance between the lion and the gazelle is 2 meters. Both will exert an equal and opposite force on each other of value 4752.4 * [tex]10^{-11}[/tex] N
Gravitational Force = G m1 * m2 / [tex]r^{2}[/tex]
= 6.67 * [tex]10^{-11}[/tex] * 190 * 15 / 4
= 4752.4 * [tex]10^{-11}[/tex] N
To learn more about Gravitational Force here :
https://brainly.com/question/12528243
#SPJ4
which of the following has the various objects listed in order from smallest to largest? the solar system; the milky way; the local group the local group; the milky way; the solar system the solar system; the local group; the milky way the milky way; the local group; the solar system the local group; the solar system; the milky way
The local group, solar system, and the milky way are ordered from smallest to largest.
The extent of the solar system is enormous—at least 100 astronomical units— (15 trillion km). The massive gravitational force of the sun, which maintains celestial bodies like planets and asteroids in orbit around it, holds it all together. Additionally, there are eight planets in the solar system, which are enormous, almost spherical bodies that follow elliptical orbits around the sun.
The apparent diameter of the Milky Way is thought to be between 100,000 and 200,000 light-years, yet its spiral arms are only approximately 1000 light-years thick (more at the bulge). According to recent calculations, a dark matter region with some visible stars may have a diameter of up to 2 million light-years.
Learn more about solar-system and the milky way here:
https://brainly.com/question/20615280
#SPJ4
as the current in the wire increases, the magnetic field around the wire increases in magnitude without changing its direction. does this affect the flux through the loop, and if so, how?
The area around a magnetic body or moving charge on which a magnetic force acts. When the magnetic field changes with time, an electric field is induced in the closed loop.
According to Faraday's law, the EMF is induced in the coil when the magnetic field, area and angle change.
Flow rate can be expressed as the flow rate of liquid, radiant energy, or particles in a given area.
Flux is the scalar product of the magnetic field in the region
Ф = ∫ B. dA
where B is the magnetic field and A is the area
Let's look at the factors that influence the flow at rest
The value of the magnetic field varies either in time or space
Wax area changes and the arc fits in the size
angle between the magnetic field and the surface changes
Flux is an analysis of the total magnetic field traveling within a given magnetic field.
Magnetic flux is what creates a magnetic field around a magnetic body.
The SI unit of magnetic flux is Weber.
Learn more about magnetic here-
https://brainly.com/question/3160109
#SPJ4
The aircraft lands with a velocity of 71 m/s.
The mass of the aircraft is 3.6 × 105 kg.
Calculate the kinetic energy of the aircraft as it lands.
Answer:
Explanation:
Given:
V = 71 m/s
m = 3.6·10⁵ kg
___________
Ek - ?
Kinetic energy
Ek =m·V²/2
Eki = 3.6·10⁵·71² / 2 ≈ 907·10⁶ J = 907 MJ
An object of unknown mass is initially at rest and dropped from a height h. It reaches the ground with a velocity v1. The same object is then raised again to the same height h but this time is thrown downward with velocity v1. It now reaches the ground with a new velocity v2. How is v2 related to v1?.
The relationship between the two speeds v1 and v2 is v2=v1√2 when an
object of unknown mass is initially at rest and dropped from a height h
The given parameters;
initial velocity of the object, u = 0
object height = h
final velocity = v1
initial velocity for the second movement, = v1
final speed of the object in the second movement, = v2
The relationship between the initial speed and the final speed is given below;
For the first movement;
v1^2 = v0^2+2gh
v1^2 = 2gh
For second motion;
v2^2 = v1^2+2gh
Relationship between the two speeds;
v2^2 = v1^2+v1^2
v2=√2v1
Thus, the relationship between the two speeds v1 and v2 is v2 = √2v1
To learn more about velocity click here https://brainly.com/question/18084516
#SPJ4
The graph represents the reaction 2H₂ +0₂2H₂0 as it reaches
equilibrium. Based on the graph, which two statements about this reaction
are true?
Concentration (mol/L)
2
Time (s)
3
4
- H₂0
0₂
H
Options C and D on the graph, are the two statements about this reaction
are true.
In a chemical reaction, chemical equilibrium is the kingdom wherein both the reactants and products are found in concentrations that don't have any further tendency to change with time so that there is no observable exchange within the houses of the device.
Chemical equilibrium is the state in which both the reactants and merchandise are present in concentrations that have no similar tendency to alternate with time so that there is no observable alternate within the homes of the device.
Learn more about reaction equilibrium here:-https://brainly.com/question/19340344
#SPJ1
What evidence do we have that the martian atmosphere was denser in the past than it is today?.
The abundance of argon by mass is 1.6% and we have observed dry stream beds and outflow channels.
An atmosphere is a layer of gas or layers of gas that surround a planet and are held in place by the gravity of the planetary body (from the Ancient Greek (atoms) "vapour, steam" and (sphere) "sphere"). When the gravity is strong and the temperature of the atmosphere is low, a planet preserves its atmosphere. The outer part of a star, which includes the layers above the opaque photosphere, is known as the stellar atmosphere; low-temperature stars may have outer atmospheres with complex molecules.
Nitrogen makes up 78% of the atmosphere of Earth, along with oxygen (21%), argon (0.9%), carbon dioxide (0.04%), and trace gases. Most of the living things use oxygen to breathe.
To learn more about Atmosphere visit here:
brainly.com/question/26767532
#SPJ4
what is the resistance of the third resistor? express your answer to two significant figures and include the appropriate units.
Total resistance of resistors is sum of all resistors.
Total resistance in series is R1 + R2 + R3.
Total resistance in parallel is 1/R1 + 1/R2 + 1/R3.
Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega.
An easier way to explain resistance is to consider an example of a person in a crowded market struggling to go from one shop to another. This situation is certainly similar to an electron trying to make its way through a wire.
Learn more about resistance here:- https://brainly.com/question/17563681
#SPJ4
the passanger liners Carnival Destiny and Grand Princess, built recently, have a mass of about 1.0x10^8 kg each. How far apart must these two ships be to exert a gravitational attraction of 1.0x10^-3 N on each other?
The correct answer is two ships are at distance of 2.6 Km.
What does gravity mean?
The force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance between them, according to Newton's universal law of gravitation.
Given, m1=m2=1.0 ×10^8kg
Fg=1.0 ×10^−3N
G=6.673 ×10^−11(N•m2 / kg ²) (We all know)
Gravitational Force, F = G × [M1M2]/r2
Putting all the above data in our formula
r= √(Gm_1m_2/ Fg )
Distance = 2.6 x 10^4 m = 2.6 Km.
To learn more about Gravitational Force from the given link
https://brainly.com/question/72250
#SPJ9
if the crate was at rest at the top of the incline and has a speed of 2.80 m/s at the bottom, how much work wf was done on the crate by friction? use 9.81 m/s2 for the acceleration due to gravity and express your answer in joules.
The Frictional Work output on crate is 27.468 J.
When the body is moved in the direction of the force, frictional force will produce positive work. Think of two blocks that are stacked on top of one another. A frictional force between the two blocks prevents the two blocks from sliding if the lower block begins to move slowly in one direction. In the same direction that the lower block is moving, this force acts on the upper block. Friction in this situation therefore produces positive work.Friction can actually do more harm than good. For instance, when a block is sliding over a rough surface, the frictional force acts in the opposite direction from the block's motion and attempts to stop it. The direction of the block's motion and the direction of the frictional force being in opposition to one another, the work done by friction is negative.V=2.80m/s W= VgtanxW= 2.80 x 9.81 x tan90W=27.468 JThe work done on crate by friction is 27.468 J.To study about Work output-
https://brainly.com/question/20319132
#SPJ4
What would happen to the gravitational force felt between two objects if the radius between them were doubled?.
The force of gravitational attraction is reduced by a factor of 4 when the separation distance between two objects is doubled (increased by a factor of 2).
What is gravitational force?The gravitational force, which is what pushes mass-containing objects toward one another. We frequently consider the pull of gravity from the Earth. Your body is kept on the ground by this force. However, all mass-bearing objects are pulled toward one another by gravity.
Greater gravitational forces will be used to attract heavier things since the gravitational force is directly proportional to the mass of both interacting objects. Therefore, the gravitational attraction between two objects grows as their respective masses do as well. The force of gravity between two objects is equal to their respective masses multiplied by two. If one of the items triples in mass, the gravitational pull between them will also triple.
What is radius?The radius of a circle is the separation between its center and circumference. Always, the diameter is twice the radius. As a result, the formula is created by multiplying the diameter by two.
Know more about Newton's law:
brainly.com/question/14222453
#SPJ4
a ruby laser emits light of wavelength 694.3 nm. if this light is due to transitions from the n 2 state to the n 1 state of an electron in a box, find the width of the box.
The width of the box is 0.795nm.
Solution:
d = 694-3x[tex]10^{-9}[/tex]m.
The energy [tex]\left[\begin{array}{ccc}E_{n} =\frac{h^{2} n^{2} }{smL^{2} } \end{array}\right][/tex]
Transition energy is related to the emitted photon
wavelength by ΔE = [tex]\frac{h^{2}c^{2} }{8mc^{2 }L^{2} } (2^{2} -1^{2} ) = \frac{hc}{h}[/tex]
∴ L = [tex]\sqrt{\frac{3hch}{8mc^{2} } }[/tex]
= [tex]\sqrt{\frac{3*1.24*10^{3}*694.3 }{8*511*10^{3} } }[/tex]
= 0.795 x [tex]10^{-9}m[/tex]
= 0.795nm.
The first dimension is to measure its length. The length is always the longest side of the flapped box. The next dimension is width. The wide side also has a flap, but it is always shorter on the side than the length. To find the width, multiply the specified length by 2 and subtract the result from the girth.
Now you know the total length of the remaining two pages. Divide this number by 2 to get the width. For a standard box, length is the longer of the two sides width is the shorter of the two sides and height is the vertical dimension from top to bottom.
Learn more about An electron here:-https://brainly.com/question/860094
#SPJ4
In a central texas grassland, the producers incorporate 12,000 kj of energy from the sun into their tissues. About how much energy would be incorporated into the tissues of herbivores?.
The herbivore uses the plant's energy to fuel its own biological functions and the growth of more bodily tissues. However, only approximately 10% of the entire plant energy is stored as additional body tissue in the herbivore's body.
Only 10% of energy moves from one trophic level to the next for each level. The 10 percent rule refers to this. Due to this law, only around 10% of the energy contained in the plants that herbivores consume gets absorbed by them. Only 10% or so of the energy stored as biomass at one trophic level, such as primary producers, is typically transferred to the next trophic level, such as primary consumers. To put it another way, from one trophic level to the next, net production typically decreases by a factor of 10.
Learn more about Energy here-
https://brainly.com/question/1932868
#SPJ4
A firefighter directs a stream of water from a fire hose at an angle of 40.0° above the horizontal. If the velocity of the stream is 39.0 m/s, what is
the furthest he can stand from the building and still hit it with water? t = Vy/g and x = Vx*2t
Firefighter can hit with water while standing at distance of 153 m from building.
What is a projectile motion?The projectile travels the path with a parabolic trajectory due to the effect of gravity. No horizontal forces so there is no horizontal acceleration.
The velocity of a projectile has horizontal component and the vertical component.
The vertical component of the velocity, [tex]\displaystyle V_y = Vsin\theta[/tex]
The horizontal component of the velocity, [tex]\displaystyle V_x = Vcos\theta[/tex]
Given the angle θ with the X- axis = 40°
The velocity of the stream V = 39 m/s
The Y component of the velocity, Vy = 39× sin 40°
Vy = 25.1 m/s
The X component of the velocity, Vx = 39× cos 40°
Vx = 29.88 m/s
The time , t = Vy/g = 25.2/9.8 = 2.56 sec
The distance from the building, [tex]x = V_x\times 2t[/tex]
x = 29.88 ×2×2.56
x = 153 m
Learn more about the projectile's velocity components, here:
brainly.com/question/14478315
#SPJ1
A 57.0 kg woman is in an elevator accelerating upward at 1.25 m/s². What is the normal force acting on her? [?] N Don't forget her weight!
Answer:
The normal force 630.4 N
Explanation:
Given:
m = 57.0 kg
a = 1.25 m/s²
g = 9.81 m/s²
___________
N - ?
Since the elevator is moving with acceleration UP, the reaction of the support:
N = m· (g + a)
N = 57.0·(9.81 + 1.25) ≈ 630.4 N
A golfer swings the club with a force of 6,000 N. If the club makes contact with the golf ball for only 0.18 s, then what impulse is given to the golf ball?
Work out and use units
The impulse given to the ball by the golfer with a club is 1080 Ns.
What is impulse?Impulse can be defined as the product of force and time.
To calculate the impulse given to the ball, we use the formula below.
Formula:
I = Ft.......... Equation 1Where:
I = Impulse given to the ballF = Force applied to the ballt = TimeFrom the question,
Given:
F = 6000 Nt = 0.18sSubstitute these values into equation 1
I = 6000×0.18I = 1080 NsHence, the impulse given to the ball is 1080 Ns.
Learn more about impulse here: https://brainly.com/question/229647
#SPJ1
What is the 4 step design thinking process?.
Despite the fact that design is frequently thought of as the domain of creatives who (we have been led to believe) prefer an overall lack of structure, design thinking is very much a structured activity.
This structured activity deliberately organized systemic approach to creative problem solving is significant for a number of reasons. The group gains trust and becomes more capable of handling situations methodically. Going in order and continuing the process are essential because each step has a distinct output that the subsequent activity depends on. Additionally, no need of any coding or Photoshop experience to start using a design thinking framework. It is intended for diverse teams to be able to contribute to the steps and the process at every stage.Design thinking is crucial for a variety of reasons and aids in the design process.It assists in maintaining that people are the process' central component.It eliminates any uncertainty regarding your client's needs.It enables you to rank your top priorities for solutions.It fosters a "yes, and..." mindset during brainstorming, which leads to revolutionary ideas.By enabling the team to experiment more and fail more quickly, it aids in the learning process for teams.It's adaptable, letting you go back and forth through the steps to prototype and iterate more quickly.But design thinking is also significant from a commercial standpoint.It promotes putting the needs of the customer before anything else.It reveals information gaps about your users in business intelligence.When effectively addressed, it reveals the client's pain points and aids companies in reducing friction associated with actions (like making purchases!).By providing advice on what to avoid, it helps people save time and money.To know more about design thinking framework-
https://brainly.com/question/14512078
#SPJ4
Using the formula for 'Kinetic Energy, what is the kinetic energy for an
object that weighs 40g and moving at 10 m/s?
200 ms² is the kinetic energy for an object that weighs 40g and moving at 10 m/s.
What are kinetic energy ?Kinetic energy is the power that an object has had as a result of motion. To accelerate an object, a power must be supplied to it. To apply a force, we must exert effort. The power is transported to the object when work is accomplished, which causes it to move at a new, constant pace.
What makes kinetic energy so important?The capacity to perform work is unquestionably the most important characteristic of kinetic energy. Force acting on to an object while it is traveling is referred to as work. Energy and work are interchangeable because of their close relationship.
Briefing:Using Kinetic Energy Formula:
K.E = 1/2 mv²
K.E. = 1/2 * 40 * 10
K.E. = 200 ms²
To know more about Kinetic energy visit:
https://brainly.com/question/26472013
#SPJ13
The same girl in number 3 (above) pushes another friend on the same skateboard.
If she pushes her friend with 60 N of force and the girl accelerates at 2.1 m/s² then
what is her friend's mass?
The mass of her friend is 28.57.
Force is a push or pulls upon an item because of the object's interaction with some other object. pressure is a power that can exchange the motion of an object. A force can reason an object with mass to alternate its speed, i.e., to boost up. pressure also can be described intuitively as a push or a pull. A force has each significance and course, making it a vector amount.
Calculation:-
given;
mass = ?
acceleration = 2.1 m/s
force = 60 N
Force = mass × acceleration
mass = force/acceleration
= 60 /2.1
= 28.57 kg
The phrase 'Force' has a unique meaning. At this degree, it is absolutely appropriate to describe a force as a push or a pull. A force is not something that an object consists of or 'has in it. A force is exerted on one object through another. The concept of a force isn't always restricted to living matters or non-living matters.
Learn more about force here:-https://brainly.com/question/12970081
#SPJ9
where are the turning points of the motion? express your answers in meters. enter your answers separated by a comma.
When K = 0, the motion's turning points take place. Think about frictionless one-dimensional motion in the x-direction. So whenever Etotal = U, K(x) = 0 and v = 0. (x).
How to describe frictionfriction is the resistance to a thing moving or rolling over another solid object. Although frictional forces can be advantageous, such as the traction required to walk without slipping, they also provide a significant amount of resistance to motion.
What leads to friction?Because of the imperfections on the two surfaces in contact, friction is produced. Small imperfections can be found on even the smoothest surfaces, and when two surfaces interact with one another, they cause friction.
To know more about friction visit:
https://brainly.com/question/13000653
#SPJ4
Four ample of teel, lead, alcohol and gla all have the ame ma and are all initially at 20 °C. After 100 calorie of heat i added to each ample, the final temperature are 38. 2 °C for the teel, 85. 6 °C for the lead, 23. 4 °C for the alcohol, and 30 °C for the gla. Which of thee four material ha the larget pecific heat capacity?
The larget specific heat capacity is the alcohol. Option A.
The specific heat of a substance is the heat capacity of a sample of the substance divided by the mass of the sample, sometimes called the mass heat capacity. Water has a very high specific heat. That means it has to absorb a lot of energy before the temperature changes.
On the other hand, sand and asphalt have low specific heat. This means that the temperature changes faster. The temperature rise in milk is higher because the specific heat of water is greater than that of milk. Water has the highest specific heat capacity that any liquid can produce. Specific heat is defined as the amount of heat that one gram of material must absorb or release to change its temperature by one degree Celsius.
Learn more about Specific heat here:-https://brainly.com/question/21406849
#SPJ4
the ability of the atmospheric pressure hypothesis to link the behavior of barometers with the behavior of siphons and vacuum pumps is an illustration of:
The ability of the atmospheric pressure hypothesis to link the behavior of barometers with the behavior of siphons and vacuum pumps is an illustration of Internal coherence.
Atmospheric pressure is nothing but the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer. At sea level has a mean value of 101,325 pascals (roughly 14.6959 pounds per square inch).
Coherent is nothing but if there are two source and if their frequency and waveform are identical then they are coherent.
To learn more about atmospheric pressure, visit here
https://brainly.com/question/28526187
#SPJ4
The light given off from a candle is which method of heat transfer
Convective heat transmission creates the thermal plume of the candle. The main method of heat energy transport in a home or structure is convection.
What is Principles for Heat Transfer?Three processes—conduction, radiation, and convection—transfer heat from and to objects, including you and your house. Heat transfers through solid materials by conduction. On hot days, heat is transferred into your house through the walls, windows, and roof.
What are the following 3 facts concerning heat transfer?There are three major ways that heat energy can be moved from one location to another. The movement of matter particles carries heat energy in CONVECTION. Particle vibration in CONDUCTION transfers heat. Electromagnetic waves directly transport heat in RADIATION.
To know more about heat transfer visit:
https://brainly.com/question/28634604
#SPJ13
What type of a wave is light? A.electromagnetic
B. Mechanical
Answer:
A
Explanation:
Visible Light is generally considered part of the electromagnetic spectrum
