(c) Its water molecules were broken apart, and hydrogen was lost to space.
The evidence that the Venus once used to have water was the deuterium to hydrogen ratio in the atmosphere of Venus is about 150 times of earth.
Proofs are Venus must have started with oceans worth water.
The water is now escaped because when the UV rays from the sun as fallen upon the water the water molecules were broken and hydrogen went to the space.
And therefore, there is no water now present on the planet Venus.
scientist are still finding ways to discover life on the planet Venus and other planets.
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Which of the following is the unit of coefficient of radiant heat transfer?
a) W/m2
b) W/m K
c) W/m2 K
d) W/K
Watts per square meter kelvin (W/m2K), the SI values for the heat transfer coefficient, are used. Radiation, convection, and conduction are the three mechanisms by which heat may be transferred.
Describe heat transmission in detail:
Any or all of the several processes known as heat transfer are assumed to act as transporters of energy and entropy from one location to another. The specific mechanisms are also known by the terms convection, heat radiation, and conduction.
How is heat transfer demonstrated?
Conduction: When you hold a hot cup of coffee, heat is transferred into your hands. Convection: When the barista "steams" cold milk to produce hot chocolate, heat is transferred. Radiation: Microwave-heating a cold cup of coffee
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A toy car having mass
m = 1.45 kg
collides inelastically with a toy train of mass
M = 3.55 kg.
Before the collision, the toy train is moving in the positive x-direction with a velocity of
Vi = 2.35 m/s
and the toy car is also moving in the positive x-direction with a velocity of
vi = 4.80 m/s.
Immediately after the collision, the toy car is observed moving in the positive x-direction with a velocity of
1.90 m/s.
b) Determine the change ΔKE in the total kinetic energy. Assume friction and therotation of the wheels are not important so that they do not affect ΔKE.
The change in the total kinetic energy (ΔKE) is determined as -1.77 J.
What is the final speed of the toy train?
The final speed of the train is calculated by applying the principle of conservation of linear momentum for elastic collision.
Note:
for elastic collision, both objects will have different speed after collision.for inelastic collision both objects will have the same speed after the collision.The final speed of the toy train is calculated as;
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
where;
m₁ is the mass of the toy caru₁ is the initial speed of the toy carm₂ is the mass of the toy trainu₂ is the initial speed of the toy trainv₁ is the final speed of the toy carv₂ is the final speed of the toy train(1.45 x 4.8) + (3.55 x 2.35) = (1.45 x 1.9) + (3.55v₂)
15.30 = 2.755 + 3.55v₂
15.30 - 2.755 = 3.55v₂
3.55v₂ = 12.545
v₂ = 3.53 m/s
The change in the kinetic energy is calculated as follows;
ΔK.E = ¹/₂m₂(v₂² - u₂²) + ¹/₂m₁(v₁² - u₁²)
ΔK.E = ¹/₂(3.55)(3.53² - 2.35²) + ¹/₂(1.45)(1.9² - 4.8²)
ΔK.E = 12.32 J - 14.08 J
ΔK.E = -1.77 J
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what is the velocity of a 900-kg car initially moving at 3000 cm/s, just after it hits a 150-kg deer initially running at 12000 mm/s in the same direction? assume the deer remains on the car.
The velocity of car is v= 27.42 m/s.
Given;-the 900 kg car initially moving at 30 m/s and just after it hits a 150 kg deer initially run at 12 m/s in the same direction are:-
m1 = 900kg
m2= 15okg
v1= 30 m/s
v2= 12 m/s
so, velocity is
v=(900*30 + 150*12)/(900+150)
v= 27.42 m/s.
What happens when two things collide in terms of velocity?When two objects collide, they are both subject to forces that are equal in strength and directed in opposite directions. Such forces frequently result in the acceleration of one object and the deceleration of the other object (lose momentum).
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moons that show few craters probably
Moons that display few craters presumably. They all pass straight over the equator of the globe. Uranus's five biggest moons. have the closest magnetic field axis.
Which 4 moons are known?There are many fascinating moons around the globe, but the Galilean satellites—Io, Europa, Ganymede, and Callisto—the first four moons identified beyond Earth—hold the most scientific curiosity.
Can Earth have Two moons?Moon and Earth
The basic explanation is that Earth only has one moon, that we name “the moon”. It is the biggest and brightest object in the night sky, and the only solar system body except Earth that humanity have visited in our space travel activities.
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a 50-turn coil has a diameter of '17cm'. the coil is placed in a spatially uniform magnetic field of magnitude so that the face of the coil and the magnetic field are perpendicular. find the magnitude of the emf, , induced in the coil if the magnetic field is reduced to zero uniformly
The magnitude of the emf induced in the coil is - 1.134 dB/dt. If the initial magnitude of the magnetic field 0.5 T in 0.5 s is reduced to zero uniformly the magnitude of the emf induced in the coil is 1.134 Volt.
The formula to calculate the magnitude of the emf induced in the coil when the magnetic field is perpendicular to the face of the coil
ε = - NA dB/dt
[tex]\epsilon \:=\: - NA \frac{dB}{dt}[/tex]
where
N = the number of turns in the coil = 50A = the surface area of the coil (m²)dB = the change in magnetic inductionThe surface area of the coil is a circle A = πr²
d = 17 cmr = 17 ÷ 2 = 8.5 cm = 0.085 mA = 3.14 × 0.085² A = 0.0227 m²ε = - NA dB/dt
ε = - 50 × 0.0227 × dB/dt
ε = - 1.134 dB/dt
The problem is not complete. It should tell the initial magnitude of the magnetic field and the interval time.
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what is the number n of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to f
The 24th harmonic is the highest that could be heard by a person.
A wave or signal that is harmonic has a frequency that is an integral (whole number) multiple of the frequency of the source signal or wave that it is being compared to. The frequency of such a signal or wave relative to the frequency of the reference signal or wave is also referred to as a component of the harmonic series by the word. The first harmonic is sometimes referred to as the basic frequency or initial wave. Higher harmonics are the next harmonics in the series. In addition to the total number of harmonics being periodic at that particular frequency, the fundamental frequency of all harmonics is also.
The word "harmonic" is used in a variety of industries, including music, radio, and all other wave-based technologies.
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when the outer layers of a star like the sun expand, and it becomes a giant, which way does it move on the h-r diagram?
When a star's outer layers, which are similar to the sun's, expand, the star travels upward and becomes cooler and more bright than the sun.
What is a star ?
Most galaxies have stars distributed throughout them that are born within dust clouds. The Orion Nebula is a well-known illustration of a dust cloud of this type. Even though stars are not alive, we refer to their beginnings and endings as "birth and death." It's a useful, though fantastical, approach to explain the star's ultimately disastrous interaction with matter and energy.
The outer layers start to enlarge, chill, and lose some of their radiance. The name "Red Giant" now refers to the growing star. Convection moves the energy from the shell-burning zone to the star's outer layers. The brilliance of the star eventually rises by a factor of 1000 or so. On the HR diagram, the star will move up and to the right along the Red Giant Branch during this phase of growth.
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Describe specific heat and explain one way that this is important to humans.
Water has a high specific heat, thus it takes a lot of heat to raise its temperature. This keeps the surroundings from getting overly hot or chilly.
Why is specific heat crucial for the human body?A substance can absorb more heat energy before changing when it has a high specific heat. 70% of the human body is made up of water. Thus, the high specific heat of water ensures that the body's temperature is maintained. Additionally, it functions as a heat energy regulator.Water has a high specific heat, thus it takes a lot of heat to raise its temperature. This keeps the surroundings from getting overly hot or chilly. Humans contain around 66% water, so this feature of water also aids in the regulation of our body temperature.To learn more about Specific heat refer to:
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A 20 kg wooden crate is dragged 12 m across a rough level floor by a rope. The force of tension in the rope is 50 N at an angle of 25° above the horizontal and the crate is moving at a constant speed of 1.50 m/s. Find the magnitude of the normal force [N].
To solve this problem, we can use the equations of motion and Newton's second law of motion. The equation of motion for an object moving at constant speed is:
x = x0 + v0t + (1/2)at^2
where x is the final position, x0 is the initial position, v0 is the initial velocity, t is the time, and a is the acceleration.
In this case, the initial position is 0 m (since the crate starts at the beginning of the 12 m distance), the initial velocity is 0 m/s (since the crate starts at rest), and the time is 12 s (since the crate moves at a constant speed of 1.50 m/s).
We can use these values to solve for the acceleration:
12 m = (1/2)(a)(12 s)^2
a = 0.5 m/s^2
Now that we know the acceleration, we can use Newton's second law of motion to find the normal force:
F = ma
N = (20 kg)(0.5 m/s^2)
N = 10 N
This is the magnitude of the normal force on the crate. Note that this is the normal force exerted by the floor on the crate, not the force of tension in the rope. To find the force of tension in the rope, we would need to consider the angle of the rope and the direction of the force.
Label the parts of the skin and subcutaneous tissue. 0.22 Cutaneous blood vessels Book Hypodermis Sweat pores Epidermis Hairs Dermis Lamellar corpuscle Sweat gland
Skin is the largest organ in the body and covers the body's entire external surface. It is made up of three layers, the epidermis, dermis, and the hypodermis, all three of which vary significantly in their anatomy and function.
Give a brief about layers of skin?
The skin is the largest organ of the body and covers the entire outer surface of the body. It consists of her three layers of epidermis, dermis and hypodermis, all three of which differ greatly in anatomy and function. The structure of the skin consists of a complex network and serves as the body's first barrier against pathogens, ultraviolet radiation, chemicals, and mechanical damage. It also regulates temperature and the amount of water released into the environment. This article describes the relevant anatomy of the epidermal layer of the skin, its structure, function, embryology, vasculature, innervation, surgical considerations, and clinical relevance.
Therefore, Skin is the largest organ in the body and covers the body's entire external surface. It is made up of three layers, the epidermis, dermis, and the hypodermis, all three of which vary significantly in their anatomy and function.
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Use the formula for the law of universal gravitation to calculate the gravitational force between the large ball and the small ball.
The gravitational force between the large ball and the small ball, given their respective masses is 1.2×10¯¹³ N
How do I determine the gravitational force?Gravitational force between two objects is given as shown below:
F = GM₁M₂ / r²
Where
F is the force of attraction G is the gravitational constant M₁ and M₂ are the masses of the objects r is the distance apartUsing the above formula, we can obtain the gravitational force between the the large and small ball as follow:
Mass of small ball (M₁) = 5.0×10⁻³ KgMass of large ball (M₂) = 9.0×10⁻² KgDistance apart (r) = 0.5 mGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Gravitational force (F) =?F = GM₁M₂ / r²
F = (6.67×10¯¹¹ × 5.0×10⁻³ × 9.0×10⁻²) / 0.5²
F = 1.2×10¯¹³ N
Thus, the gravitational force is 1.2×10¯¹³ N
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find the magnitude of the acceleration acm of the center of mass of the spherical shell. take the free-fall acceleration to be g = 9.80 m/s2 .
The acceleration of center of mass of spherical shell = 2.94 [tex]m/s^{2}[/tex]
What is center of mass ?A position established in relation to an object or set of objects is the center of mass. It is the average location of all the pieces of the system, weighted according to their masses.
According the given information
Two forces act along the line of motion. Gravity down the slope,
m g sin([tex]\alpha[/tex]), and friction up the slope, F. They provide the linear acceleration and F also provides the torque about the Center of mass. This gives the equations of motion:
m a = m g sin([tex]\alpha[/tex]) - F
I dV/dt = F R
A spherical shell of mass m has moment of inertia I = 2/3 m R^2. Furthermore a pure rolling relates dV/dt and a through a = R dV/dt. So the two equations become
m a = m g sin([tex]\alpha[/tex]) - F
2/3 m a = F
These we solve for a and F:
Substituting F from the second equation gives
m a = m g sin([tex]\alpha[/tex]) - 2/3 m a
a = 3/5 g sin([tex]\alpha[/tex])
a = 3/5 × 9.80m/s^2 sin(30.0) = 2.94 [tex]m/s^{2}[/tex]
The acceleration of center of mass of spherical shell = 2.94 [tex]m/s^{2}[/tex]
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what is the acceleration due to gravity at the surface of titania?
The acceleration due to gravity on the surface of earth is lower than that at earth. The g value for titania is 0.037 m/s².
What is acceleration due to gravity?Acceleration due to gravity is the acceleration by the force of gravitation by an object. The g value can be obtained from the mass, radius or distance and universal gravitational constant G as written below:
g = G m/r²
The acceleration due to gravity for earth is 9.8 m/s². The mass of titania is 1/1700 of the mass of earth and its radius is 1/8 times that of earth. The acceleration due to gravity for titania is:
g = G (Me/1700)/ (Re/8)²
= 64/1700 G Me/Re²
Where Me and Re be the mass and radius of earth. The g value for earth is 9.8 m/s².
Acceleration due to gravity for titania = 9.8 m/s² × 64/1700 = 0.0377m/s²
Therefore, the acceleration due to gravity of titania is 0.0377m/s².
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The kinetic friction force between a 55.0 kg and a horizontal surface is 45.N IF THE initial speed of the object is 24.0m/s and a friction is the only force acting on the object what distance will it slide before coming to a stop
The distance the 55.0 Kg object will slide before coming to rest, given that it was it was initially tracing at 24 m/s is 351.22 m
How do I determine the distance?First, we shall obtain the deceleration of the object. Details below
Mass (m) = 55.0 KgForce of friction (F) = -45 NDeceleration (a) = ?F = ma
Divide both sides by m
a = F / m
a = -45 / 55
a = -0.82 m/s²
Finally, we shall determine the distance the object will slide before coming to rest. Details below
Initial velocity (u) = 24 m/sFinal velocity (v) = 0 m/s Deceleration(a) = -0.82 m/s²Distance (s) =?v² = u² + 2as
0² = 24² + (2 × -0.82 × s)
0 = 576 - 1.64s
Collect like terms
0 - 576 = -1.64s
-576 = -1.64s
Divide both side by -1.64
s = -576 / -1.64
s = 351.22 m
Thus, we can conclude that the distance is 351.22 m
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a block of ice at 0 is sliding on a horizontal surface. the inital speed of the ice is 7.90 and the final speed is 3.80. determine mass of ice that melts
Given, mass of block 30kg, initital velocity 6.1m/s, final velocity=4.5m/s, change in kinetic energy= mvi^2/2-mvi/2- mvf2/2, KE= 254.4J change in KE= heat generated by friction L=3.4*10^5J/kg, 254.4= m*3.4*10^5, m=0.748gm.
In physics, how do you solve for mass?There are numerous methods for calculating an object's mass, including:
Mass Equals volume * density (m = V). The mass of an object can be calculated by multiplying its density by its volume because density is a measure of mass per unit of volume. Mass equals force times acceleration (m=F/a). Gravitational acceleration and mass are equal (m=W/g).
What is the center of mass formula?Center of Mass in a System of Two Particles (m1+m2) rcm equals (m1 r1+m2 r1). The sum of the products of the masses of the two particles and their respective position vectors equals the product of the total mass of the system and the position vector of the center of mass.
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the work function for lead is 4.14 ev. ultraviolet light of wavelength 153 nm is incident on the clean surface of a lead sample. we wish to predict the stopping voltage we will need for electrons ejected from the surface. (a) what is the photon energy of the ultraviolet light?
speed of the electron is v= 1.371 x 10⁶ m/s.
briefly:-
wavelength of the ultraviolet light beam ARE , λ = 130 nm = 130 x 10⁻⁹ m
the work function of molybdenum surface IS, W₀ = 4.2 eV = 6.728 x 10⁻¹⁹ J
energy of the incident light is :-
E = hf
where;
Planck's constant h= 6.626 x 10⁻³⁴ J/s
f = c / λ
E = hν = hc/λ
E =15.29810-19 J
Photo electric effect equation is;-
E = W₀ + K.E
Where;
K.E =the kinetic energy of the emitted are electron K.E = E - W₀
K.E = 15.291 x 10⁻¹⁹ J *- 6.728 x 10⁻¹⁹ J
K.E = 8.563 x 10⁻¹⁹ J
Kinetic energy of emitted electron is ;
K.E = ¹/₂mv²
where;
m =mass of the electron = 9.11 x 10⁻³¹ kg
v is the speed of the electron
K.E. = 1/2 m v2.
V=1.371 x 10⁶ m/s.
speed of the electron is v=1.371 x 10⁶ m/s.
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g water is pumped a vertical distance of 38 m at the rate of 25 1/s. how much work is done in 2.5 min?
16775 watts or 16.7kW is the amount of work done in 2.3 minutes when the water is pumped for a distance of 38m/s.
What do you understand by work done?
The sum of the displacement and the component of the applied force of the object in the displacement direction is the work done by a force. Work is accomplished when we push a block with some force; the body moves more rapidly.
What is the distance?Distance is the sum of an object's movements, regardless of direction. The distance can be defined as the amount of space an object has covered, regardless of its starting or ending position.
Calculation:
Given,
Distance= 38m
Rate = 25mL/s = 0.25L/s
To find work done in 2.5mins Or 150seconds
Potential energy (P.E) = (mgh) /t
P.E = (mgh) /t
= (0.25 Ls-¹ * 9.81 * 38m) / 1sec
= 93.195 Watts
For 1 sec 93.195 watt is used
For 2.5mins Or 180 seconds = 93.195 × 180= 16775 watts or 16.7kW power is used for the work done.
Hence, 16775 watts or 16.7kW is the amount of work done in 2.3 minutes when the water is pumped for a distance of 38m/s.
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different masses are hung on a spring scale calibrated in newtons. the force exerted by gravity on 1.0 kg is shown in the image below in newtons. an image of a spring scale with a 1 kilogram weight attached. the scale reads 9.8 n. what would be the force exerted by gravity on 9.0 kg? 9.0 n 9.8 n 81 n 88 n
The force exerted by gravity on a mass of 6.5 kg will be equal to 64 N. Hence, option A is correct.
What is Force?Any operation that has the ability to alter, maintain, or modify a body's motion is considered a force in mechanics. Isaac Newton's Principia Mathematica has three laws of motion that are usually used to demonstrate the idea of force (1687). A body at rest or consistently moving in a straight path is said to remain in that state before a power is applied to it, according to Newton's first law.
Now, let's find out the force exerted by gravity,
Given,
Mass, m = 6.5 kg
Use the value of acceleration due to gravity (g) as 9.8 m/s².
f = 6.5 × 9.8
f = 63.7 or,
f = 64 N.
Therefore, the force exerted by the gravity will be equal to 64 N.
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Cigarettes Can Be Used As A Form Of ________. Fiat Money Fake Money Barter
This problem has been solved!
You'll get a detailed solution from a subject matter expert that helps you learn core concepts.
See Answer
Cigarettes can be used as a form of ________.
fiat money
fake money
barter
Cash in dollars. Fiat money refers to any forms of currency that are issued by governments or central banks but are not backed by anything.
What types of exchange mechanisms are examples?When money is used as a medium of exchange, it speeds up transactions between buyers and sellers because it is commonly accepted as payment for goods and services. Although most societies use money, other exchange methods have included tobacco, salt, gold, and stones.
Exactly what qualifies as a medium of exchange?A medium of exchange is a device or system that acts as a middleman in transactions involving the exchange of goods between parties. Currency serves as the primary means of exchange in modern economies.
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a thin, circular hoop is released at the top of an incline that is 8:0 mlong and makes an angle of 370 above the horizontal. what is its speed at the bottom of the incline? assume it rolls without slipping. a. 5:5 m
The speed at the bottom of the incline is 6.87 m per second.
What is conservation of energy?The conservation of the energy is a fundamentally law of physics, chemistry stating that the total of the energy of an isolated by the system is constant despite internally changes. It is mostly common expressed as “energy can neither to be created nor destroyed”, and it is the basis of the first-ever law of the thermodynamics.
As per the given question
The length of the inclined plane L= 8.00m
angle of inclination is = 37°
Height of the inclined plane h= L sin ø
(8.00m) sin 37°
=4.814 m
Let's take m= mass of hoop
Let's take r=radius of hoop
Let's v be the velocity of the hoop bottom to the inclined plane.
Now we can apply conservation of energy at the top of the inclined plane and at to the bottom of the inclined plane.
mgh = ¹/₂ mv²
mgh = ¹/₂ mv² + ¹/₂ Iω²
Where, I = moment of inertia
ω = angular velocity
I = L/ω
mgh = ¹/₂ mv² + ¹/₂ (L/ω)ω²
mgh = ¹/₂ mv² + ¹/₂ Lω
mgh = ¹/₂ mv² + ¹/₂ mvrω
ω = vr
mgh = ¹/₂ mv² + ¹/₂ mvrvr
gh = ¹/₂ v² + ¹/₂ (vr)²
gh = ¹/₂v² (1 + r²)
v=gh
v=√(9.8m/s^2)(4.814m)
v=6.87 m/s
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on a violin, a correctly tuned string has a frequency of 460 hz. if the string produces a sound at 510 hz when under a tension of 25.0 n, what should the tension be to produce the correct frequency?
The tension be to produce the correct frequency is 306N
What is the frequency?The frequency of a repeated event is its number of instances per unit of time. It differs from angular frequency and is sometimes referred to as temporal frequency for clarification. One event occurs per second when measuring frequency in hertz.
f= 1/2L[tex]\sqrt[/tex] μT
so
fα[tex]\sqrt[/tex] T
∴ f 1/f 2 = [tex]\sqrt[/tex]T 1/T 2
In our example, f 1 = 460 Hz, and T 1 =?
and for f = 510 Hz, T 2 = 255.
∴
510/460 = [tex]\sqrt[/tex]T 1/255.
∴T 1 =( 510/510 )=306N.
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what does it mean to say that a beam of light is polarized? the beam has a magnetic field, but no electric field. the beam itself is charged, carrying either positive or negative charge. the direction of the beam's electric field alternates between two possibilities. the beam has an electric field, but no magnetic field.
Plane polarized light consists of waves that has magnetic field in which the direction of vibration is the same for all waves.
Polarization, in Physics, is defined as a phenomenon caused due to the wave nature of electromagnetic radiation.Sunlight travels through the vacuum to reach the Earth, which is an example of an electromagnetic wave. These waves are called electromagnetic waves because they form when an electric field interacts with a magnetic field.Light is the interaction of electric and magnetic fields travelling through space. The electric and magnetic vibrations of a light wave occur perpendicularly to each other. The electric field moves in one direction and the magnetic field in another ‘perpendicular to each other. So, we have one plane occupied by an electric field, another plane of the magnetic field perpendicular to it, and the direction of travel is perpendicular to both.Plane polarized light consists of waves in which the direction of vibration is the same for all waves.The process of transforming unpolarized light into polarized light is known as polarization.
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what parameters do hubble's law relate to each other
Answer:
Hubble's law is considered a fundamental relation between recessional velocity and distance. However, the relation between recessional velocity and redshift depends on the cosmological model adopted and is not established except for small redshifts.
Explanation:
The relationship between recessional distance and velocity is thought to be governed by Hubble's law. Although it is not confirmed save for minor redshifts, the relationship between recessional velocity and redshift relies on the cosmological model used.
What is Hubble's Law?Although Hubble was a real person, a spacecraft that was launched into space was given his name. He found that the galaxies that seem to be farthest from us are accelerating their distance from us, while the galaxies that are nearer to us are lagging.
Hubble's law is therefore that. If you study higher-level astronomy, you can do a mathematical operation known as Hubble's law. You can determine a mathematical relation that says that anything moves quicker the further distant it is from you.
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Which of the following is a classic challenge of emerging adulthood? O needing to financially support oneself O getting along with a spouse O taking on adult roles with ease O raising children
A typical problem of becoming an adult is getting along with our partner.
Adulthood is the stage of life when a person has fully developed physically and intellectually. Adulthood is typically assumed to start around 20 or 21 years old. Old age begins at the age of 60 and follows middle age, which starts around the age of 40.
The topic of adult development is briefly discussed after that. See human development and human behaviour for a comprehensive discussion.
Early and middle adulthood are physically characterised by slow, steady losses in body functioning, which quicken when old age is reached. Through the mid-20s, muscular mass continues to rise before progressively declining after that. Up until around age 30, the skeletal mass grows; after that, it starts to diminish, first in the core skeleton (the pelvis and spine), then in the peripheral skeleton.
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a player catches a ball. consider the action force to be the impact of the ball against the player's glove. what is the reaction to this force?
When then the ball is stopped by the hand due to reaction force by the hand which is equal in magnitude but is opposite in direction to the force applied by the ball.
According to Newton's third law of motion, the reaction would be equal and opposite to the person pushing on the ball, so the ball pushing on the person.
When a ball is thrown on the floor or a wall, it bounces back. The force exerted by the ball on the ground or wall is the action force. The force that the ground or wall exerts on the ball in response to the action force causes the ball to jump or bounce back.
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consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? (a) es in the x-direction, bs in the y-direction; (b) es in the -y-direction, bs in the x-direction; (c) es in the z-direction, bs in the -x-direction; (d) es in the y-direction, bs in the -z-direction.
The direction of the propagation of the wave is -x direction.
The direction of the propagation of the wave in each case are:
A) +z direction
B) +z direction
C) -y direction
D) -x direction
\vec Ein is the Electrical field vector and \vec Bin is the Magnetic field vector, because the field vectors are always perpendicular to each other the propagation of the wave is perpendicular to the two vectors. The direction of the propagation of the wave can be found by \vec Ein X \vec Bin (Cross product of two vectors). This can also be done by using the RIGHT HAND RULE.
Cross product can be found by
i x j = k and j x i = - k
j x k=i and k x j = - i
k x i=j and i x k = - j
where i represents the +x direction, j represents the +y direction and k represents the +z direction
The RIGHT HAND RULE can be used to illustrate the cross product by using the right hand and pointing the index finger in the direction of the first vector and the middle finger along the second vector, the cross product is in the direction of the thumb.
A) \vec Ein the +x direction,\vec Bin the +y direction,
Finding the cross product of the two vectors (i x j = k) would give a vector in the +z direction
B) \vec Ein the -y direction,\vec Bin the +x direction
Finding the cross product of the two vectors (- j x i = k) would give a vector in the +z direction
C) \vec Ein the +z direction,\vec Bin the -x direction
Finding the cross product of the two vectors (k x - i = - j) would give a vector in the -y direction
D) \vec Ein the +y direction,\vec Bin the -z direction
Finding the cross product of the two vectors (j x - k = - i) would give a vector in the -x direction
The direction of the propagation of the wave is -x direction.
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jasper and gemma are going to play on a teeter totter. gemma gets on first. when jasper gets on, gemma moves into the air, but she does not move to the top. a girl sits on the left side of a black line resting at its middle on a brown triangle and a boy on the right. which statement could correctly explain the forces acting on the teeter totter? the forces are balanced because jasper weighs the same as gemma. the forces are unbalanced because jasper weighs the same as gemma. the forces are balanced because jasper weighs more than gemma. the forces are unbalanced because jasper weighs more than gemma.
The forces are balanced because Jasper weighs the same as Gemma.
Force:
A force is an influence that can alter an object's motion according to physics. A force can cause an object with mass to accelerate when it changes its velocity, such as when it moves away from rest. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction. It is calculated using the newton SI unit (N). Force is denoted by the letter F.Since forces are perceived as pushes or pulls, this can offer a simple explanation of how forces are described.
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A motorbike undergoes a constant acceleration from rest and travels a distance
of 60 m in 6.0 s.
What is the acceleration of the motorbike?
Help please like actually someone help me PLEASE
The final speed of the motorcycle is: 67 m/sec
What is speed?Velocity is the pace and direction of an item's movement, whereas speed is the time rate at which an object is travelling along a route. In other words, although velocity is a vector, speed is a scalar quantity.
Given that,
initial speed of the motorcycle, u=25 m/sec
Acceleration of the motorcycle, a = 7 m/sec²
According to the equation of motion,
v = u + at
v = 25 m/sec + (7m/sec²) × (6 sec)
v = 67 m/sec
Thus, final speed of the motorcycle is: 67 m/sec
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what should you point out on a demonstration drive when depressing 2023 versa throttle three-quarters of the way to the floor
You should emphasize during a test drive that the 2021 Versa's CVT replicates shifts like an ordinary automatic transmission by depressing the accelerator approximately 75% of the way to the floor.
Explain the term demonstration drive?A test drive is indeed the act of operating a motor vehicle to evaluate its general operational condition, drivability, and roadworthiness. A test driver is a person who tests cars for a living, whether for an automaker, the automotive press for reviews, or a racing team.You should emphasize during a test drive that the 2021 Versa's CVT replicates shifts like an ordinary automatic transmission by depressing the accelerator approximately 75% of the way to the floor.
Engine noise that would usually result from continuous acceleration at high revs is reducedAnother more linear acceleration sensation is present.To know more about the demonstration drive, here
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