what is the distance of a star with apparent magnitude of m=20 and absolute magnitude of m=0 group of answer choices 10 pc 10,000pc 100,000pc 1,000,000pc

A cosmic day is equivalent to approximately 13.8 billion Earth years.

To calculate how many Earth years a cosmic day is equivalent to, we need to determine the length of a cosmic year in Earth years and then divide it by 365 to find the duration of a cosmic day.

Given that the age of the universe is estimated to be 13.8 billion normal years, and only one cosmic year has passed in that time, we can conclude that a cosmic year is equal to 13.8 billion normal years.

To convert this into Earth years, we multiply the length of a cosmic year by 365, since there are 365 days in a normal year.

13.8 billion normal years * 365 = 5.04 trillion Earth years.

Now, to find the duration of a cosmic day, we divide the length of a cosmic year in Earth years by 365 (the number of cosmic days in a cosmic year).

5.04 trillion Earth years / 365 = 13.8 billion Earth years.

Therefore, a cosmic day is equivalent to approximately 13.8 billion Earth years.

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When something is painted red, the color that is most absorbed is green.

Color perception is based on the reflection and absorption of light. Different colors correspond to different wavelengths of light. When an object appears red, it means that it is reflecting light primarily in the red wavelength range and absorbing other wavelengths.In the case of red objects, they appear red because they selectively absorb light in the blue and green wavelength ranges while reflecting light in the red wavelength range. The red pigment or dye used in the paint absorbs the complementary color, which is green. As a result, the green light is mostly absorbed by the object, while the red light is reflected, giving the object its red appearance.Therefore, when something is painted red, it means that it absorbs the color green the most.

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A 440-Hz tuning fork is used with a resonating column to determine the velocity of sound in helium gas. If the spacing between resonances is 110 cm, The velocity of sound in helium gas is approximately 484 m/s.

In a resonating column experiment, the resonances occur when the length of the column matches a multiple of half the wavelength of the sound wave. The formula relating the length of the column (L) to the wavelength (λ) is:

L = (n + 1/2) * λ/2

Where: L is the length of the column, n is an integer representing the resonance mode, and λ is the wavelength of the sound wave.

In this case, the tuning fork has a frequency of 440 Hz, which corresponds to a wavelength of λ = v/f, where v is the velocity of sound and f is the frequency. Thus:

λ = v/f

The spacing between resonances is given as 110 cm, which corresponds to half a wavelength:

λ/2 = 110 cm

We can solve these equations to find the velocity of sound in helium gas:

λ = 2 * (110 cm) = 220 cm = 2.20 m v = λ * f = (2.20 m) * (440 Hz) = 968 m/s

However, the given information states that the experiment is conducted in helium gas. The velocity of sound in a gas depends on its properties, such as density and elasticity. In the case of helium gas, it has a lower density and higher elasticity compared to air. As a result, the velocity of sound in helium gas is higher than in air. The approximate velocity of sound in helium gas is around 484 m/s.

Using a 440-Hz tuning fork and a resonating column, the experiment measures a spacing of 110 cm between resonances. The velocity of sound in helium gas is approximately 484 m/s.

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Answer: A

Explanation: the tilted axis’s allows the sun to hit areas with different amount of radiation therefore leading to seasons

Answer:

A because the side that is closer is hotter than normal and the same thing on the other side as well. It will be colder.

Explanation:

m-87, the giant elliptical at the heart of the Virgo Supercluster, shows a(n) jet extending outward from its core, moving at relativistic velocities.

The jet observed in m-87 is a remarkable feature of this active galaxy. It is a narrow, highly energetic stream of particles and radiation that extends from the central core of the galaxy to great distances. The jet in m-87 is known to exhibit relativistic velocities, meaning that the particles within the jet approach speeds close to the speed of light. This high-speed motion is a result of powerful astrophysical processes, such as the acceleration of particles in the presence of intense magnetic fields or the interaction of the jet with surrounding matter. The jet in m-87 provides valuable insights into the physics of active galactic nuclei and the dynamics of supermassive black holes.

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When you enter a darkened cinema hall, it becomes difficult to see your surroundings clearly due to the process of dark adaptation. Dark adaptation is the adjustment of the eyes to low light conditions.

In a dark environment, the pupils of your eyes dilate to allow more light to enter. This dilation increases the sensitivity of the retina to capture the available light. However, it takes some time for the eyes to fully adapt to the darkness and for the visual system to adjust. When you enter a cinema hall, which is intentionally kept dark to enhance the movie-watching experience, your eyes are still adapting to the low light levels. Initially, the surroundings appear dark and indistinct because the visual system is still in the process of adjusting.

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Answer:

anything stationary

Explanation:

anything that is not moving outside the train like passing trees or the train's station is considered to be a frame reference.

After the series of powerful storm systems of the 2005 Atlantic hurricane season, as well as after Hurricane Patricia, a few newspaper columnists and scientists brought up the suggestion of introducing Category 6, and they have suggested pegging Category 6 to storms with winds greater than 174 or 180 mph (78 or 80 m/s).

By using this formula =Diameter = Diameter = Known Field Diameter × (Known Magnification / Unknown Magnification)
, you can calculate the diameter of an unknown microscope field, allowing you to estimate the size of the objects you're observing under different magnification levels.

.To calculate the diameter of an unknown microscope field, you can use the formula:

Unknown Field Diameter = Known Field Diameter × (Known Magnification / Unknown Magnification)

Here's a step-by-step explanation of the formula:

1. Determine the known field diameter: This is the diameter of the field of view under a certain magnification, which is usually provided by the microscope manufacturer or can be measured experimentally.

2. Determine the known magnification: This is the magnification level at which the known field diameter was measured.

3. Determine the unknown magnification: This is the magnification level at which you want to calculate the unknown field diameter.

4. Plug the values into the formula and solve for the unknown field diameter.

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Here is a problem.

Problem:-

A car of mass 1700kg accelerated with a rate of 17m/s^2. find the force applied on it.

Extra:-

F=ma is. the famous formula of Sir Eizak Newton

The equations mentioned by Emily in the valuation analysis for Aspeon are as follows:

1) Equation (1): This equation represents the value of equity (S) and calculates it based on the EBIT (earnings before interest and taxes), the tax shield provided by debt (D), and the required return on debt (kd) and equity (ks). It implies that the value of equity is equal to the adjusted EBIT after deducting the tax shield from debt.

2) Equation (2): This equation calculates the total enterprise value (V) by adding the value of equity (S) and debt (D). It represents the total worth of the company, considering both equity and debt.

3) Equation (3): This equation calculates the price per share (P) by dividing the total enterprise value (V) minus the initial debt (D0) by the number of shares (n0). It represents the price per share based on the valuation of the company.

4) Equation (4): This equation calculates the new number of shares (n1) by subtracting the dividend (D) from the initial number of shares (n0) divided by the price per share (P). It represents the adjusted number of shares after the payment of dividends.

5) Equation (5): This equation calculates the levered value (VL) by adding the unlevered value (VU) with the tax shield value (TD). It represents the value of the company after considering the tax advantages of debt.

These equations provide a framework for valuation analysis, considering factors such as earnings, taxes, debt, and equity. They help assess the value and financial implications of Aspeon's growth prospects.

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Answer:

W = F * s    

Work done equals applied force * distance traveled

Apparent weight = M g (1 - sin θ)     since some of applied force will lighten sled

μ = coefficient of kinetic friction

F cos θ = force applied to motion of sled

s = distance traveled

[μ M g (1 - sin θ)] cos θ * s = work done in moving sled

Note that F = μ M g    if applied force is in the horizontal direction

Answer:

Explanation: Andre Ampere

Answer:

ooops ignore this it wont let me leave this screen it does this weirdly s

Explanation:

Answer:

Workdone = 1250Nm

Explanation:

Given the following data;

Force, F = 500N

Distance, d = 2.5m

Workdone is given by the formula;

\( Workdone = force * distance\)

Substituting into the equation, we have

\( Workdone = 500 * 2.5 \)  

Workdone = 1250Nm

Therefore, the actual work done by the worker is 1250 Newton-meter.

The actual work done by the worker is 1250 J.

Work can be defined as the product of force and distance. The s.i unit of work is Joules

The formula of work is

W = Fd....................... Equation 1

Where W = work done by the worker, F = Force, d = distance.

From the question,

Given: F = 500 N, d =  2.5 m

Substitute these values into equation 1

W = 500×2.5

W = 1250 J

Hence, the actual work done by the worker is 1250 J

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Answer: the answer is true :-)

Explanation:

Explanation:

To determine whether something is living or nonliving, a living thing must meet seven specific characteristics: feeding, movement, respiration, excretion, growth, sensitivity, and reproduction. A living organism needs to be able to feed to make energy and grow.

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Miss Hawaii

The frequency the flute produces under the given conditions is approximately 851 Hz.

To find the frequency the flute produces under the given conditions, we need to use the formula for the fundamental frequency of a flute that is open at both ends. The formula is:

f = (v/2L) * n

Where:
f = frequency
v = speed of sound in air (approximately 343 m/s at 20.0°C)
L = length of the flute
n = harmonic number (1 for the fundamental frequency)

First, let's find the length of the flute at 20.0°C.

Since the flute is open at both ends, the length is equal to half the wavelength of the sound produced. So, we can rearrange the formula as:

L = (v/2f) * n

Plugging in the given values:
L = (343 m/s) / (2 * 880 Hz) * 1

Simplifying:
L ≈ 0.195 m

Now, let's find the frequency of the flute at -5.00°C. We can use the same formula, but this time we need to use the speed of sound at -5.00°C, which is approximately 331 m/s.

f = (331 m/s) / (2 * 0.195 m) * 1

Simplifying:
f ≈ 851 Hz

Therefore, the frequency the flute produces under the given conditions is approximately 851 Hz.

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Answer:

4.26 m/s

Explanation:

h = 0.925

v = 0

u = ?

v = u^2 - 2gh

0 = u^2 - 2gh

u = sqrt 2gh

= sqrt 2*9.8*0.925

= 4.258

= 4.26

The minimum speed that must be given to the pail at the highest point of the circle if no water is to spill from it can be determined using the equation for centripetal acceleration.

Centripetal acceleration is given by the equation a = v²/r, where v is the speed, and r is the radius of the circle.

At the highest point of the circle, the centripetal acceleration must be equal to the acceleration due to gravity, g, in order for no water to spill from the pail.

Setting the two equations equal to each other and solving for v gives:

v²/r = g

v² = g*r

v = √(g*r)

Therefore, the minimum speed that must be given to the pail at the highest point of the circle if no water is to spill from it is √(g*r), where g is the acceleration due to gravity, and r is the radius of the circle.

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The mass of the fish is 3 kg.

What is mass?

In physics, mass is a proportion of how much matter is in an item. It is typically estimated in kilograms (kg). Mass is a scalar amount, meaning it just has size and no course.

Mass is unique in relation to weight, which is the force applied to an item because of gravity. Mass is an inherent property of an item and doesn't rely upon its location or environment. Weight, then again, relies upon the gravitational force and can change depending on the location.

rotational equilibrium

(3.5 )(9.8)(L/2) + m(9.8)(L/4) - (5)(9.8)(L/2) = 0

34.3(L/2)+9.8m(L/4)- 49(L/2)=0

34.3(L/2)- 49(L/2)+9.8m(L/4)=0

-14.7(L/2)+9.8m(L/4)=0

-7.35L+2.45mL=0

2.45mL=7.35L

m=7.35L/2.45L

m = 3 kg.

thus mass of the fish is 3 kg.

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Answer:

induction

Explanation:

a change in current (the pulse) causes a change in the magnetic field resulting from that current. the nearby wire is inside that magnetic field. when that magnetic field changes, it induces a current in any nearby conductor. the amount of current induced depends on the strength of the field and the distance between the conductors.

Answer:

970 kN

Explanation:

The length of the block = 70 mm

The cross section of the block = 50 mm by 10 mm

The tension force applies to the 50 mm by 10 mm face, F₁ = 60 kN

The compression force applied to the 70 mm by 10 mm face, F₂ = 110 kN

By volumetric stress, we have that for there to be no change in volume, the total pressure applied by the given applied forces should be equal to the pressure removed by the added applied force

The pressure due to the force F₁ = 60 kN/(50 mm × 10 mm) = 120 MPa

The pressure due to the force F₂ = 110 kN/(70 mm × 10 mm) = 157.142857 MPa

The total pressure applied to the block, P = 120 MPa + 157.142857 MPa = 277.142857 MPa

The required force, F₃ = 277.142857 MPa × (70 mm × 50 mm) = 970 kN

The block's kinetic energy, 6.53 sec after the force is applied, will be 532.8 J.

We know that,

Kinetic energy = 1/2 x mass x (speed)²

Since the block is initially at rest, its initial velocity is zero. We need to find the final speed of the league after 6.53 seconds.

To find the final velocity, we can use the equation:

force = mass x acceleration

Here, acceleration is the rate of change of velocity; solving for acceleration, we get:

Acceleration = force/mass

Substituting the values, we get:

acceleration = 15.3 N / 11.7 N = 1.3077 m/s^2

Now, using the equation:

velocity = acceleration x time

We can find the final velocity of the block after 6.53 seconds:

velocity = 1.3077 m/s² x 6.53 s = 8.53 m/s

Finally, we can find the kinetic energy of the block using the first equation:

Kinetic energy = 1/2 x mass x (velocity)²

Plugging in the values, we get:

Kinetic energy = 1/2 x 11.7 N x (8.53 m/s)² = 532.8 J

Therefore, the block's kinetic energy after 6.53 seconds of the force applied is 532.8 Joules.

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Answer:

  4/3 m/s

Explanation:

Assuming momentum is conserved, the sum of products of mass and speed before the collision is the same as after:

  (2000 kg)(4 m/s) +(4000 kg)(0 m/s) = (2000 +4000 kg)(Vt)

  Vt = (8000 kg·m/s)/(6000 kg) = 4/3 m/s

The speed of the combined objects after the collision is 4/3 m/s.

Answer:answer is B

Explanation:

For Each Of The Following Scenarios Described Where A Molecule Or Ion Is Moving From One Side Of A Membrane To The Other, Option A is correct answer.

Scenario A: Oxygen moving across a plasma membrane Answer: A. Simple Diffusion Scenario B: Glucose moving across a plasma membrane Answer: C. Facilitated Diffusion By A Carrier/Transport Protein Scenario C: Sodium moving across a plasma membrane Answer: B. Facilitated Diffusion By A Channel Protein Scenario D: Water moving across a plasma membrane Answer: A. Simple Diffusion : Simple diffusion allows the nonpolar and small molecules to pass through the plasma membrane without any assistance of proteins. In facilitated diffusion, larger polar molecules or ions move across the membrane through the help of transport proteins. Transport proteins are of two types, channel and carrier proteins. Channel proteins provide an open path for the molecules to move whereas carrier proteins hold the molecules to move across the membrane and change their shape.

Option A is correct answer.

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A discordant igneous intrusion cuts across bedding planes. Here is the detailed explanation of the given question:Explanation:The Discordant igneous intrusion is the formation of an igneous rock mass when magma is injected into a host rock and cools there.

This form of igneous intrusion does not conform to the stratification or layering of the existing rock mass because it cuts across it.Therefore, a discordant igneous intrusion cuts across bedding planes.Option (a) is correct. It is the only option that describes the features of discordant igneous intrusion. Hence, the correct answer is option (a).

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The corresponding velocity vs time and acceleration vs time graphs from the position vs time graphs are given below,

The speed-time graph: A plot between speed and time is called a velocity-time graph. It depicts the motion of an object moving straight ahead. At any given time, the magnitude of velocity equals its instantaneous speed. Only 1-D motion is intended for its drawing, which accepts positive and negative values.

Acceleration-Time For a particle travelling in a straight path, the acceleration is displayed against time in the graph. The acceleration-time depicts time and acceleration values on the x and y axes, respectively.

An object's distance from its beginning position at any given moment since it began moving is displayed on a position-time graph. The greater the slope of the line and the faster the object's speed changes, the steeper the line is. More location vs. time graph illustrations can be found in this two-part video series.

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