suppose that new measurements prove that our data on the spectral shifts of the galaxies are correct, but that all the distances of all the galaxies are actually double of what we think they are today. how would the doubling of the distances affect hubble's law?

Answer:

Hiya your answer's up

Down

6- dioxide

Answer:

Much of our understanding of the basic structure and composition of Earth and the other planets in our solar system is not strenuously debated. We can infer a surprising amount of information from the size, mass and moment of inertia of the planets, all of which can be determined from routine astronomical observations. Measurements of surface chemical composition, either by direct sampling (as has been done on Earth, the moon, and Mars) or through spectroscopic observations, can be used to estimate elemental abundances and the degree of chemical differentiation that occurred as the planets condensed from the solar nebula. Remote observations of the gravitational field can be used to understand how a planet's mass is distributed, whereas the strength and shape of the magnetic field provides some constraint on the structure of a metallic core. The specifics of structure and composition, however, are much more debatable. And it is these details that tell us a much more extensive and ultimately more interesting story about the internal dynamics of the planets and their evolution. As a result, trying to determine them is frontier research in almost all fields of earth and planetary science.

Even on Earth, many of these details have to be inferred from remote observations. Because we cannot sample the deep Earth, we must deduce its composition either by looking at the clues hidden in igneous and metamorphic rocks, or by examining proxies for composition and structure such as the three-dimensional variation of the velocity of seismic waves produced by earthquakes and sampled by networks of seismometers on the surface. The late Francis Birch, the eminent Harvard geophysicist, and his colleagues and students worked out the basic methodology that brings these distinct observations together. Birch showed how the stiffness of rocks changes under the extreme conditions of pressure and temperature deep within planets, as well as with chemical composition. Because the speed of seismic waves depends on the stiffness of the medium through which they propagate, it is possible to calculate temperature and composition from maps of seismic velocity. Most current research is based on Birch's work and it has even been extended to the most extreme temperature and pressure conditions of Earth's core. For example, much of our understanding of the large- and small-scale convection patterns driving plate tectonics has come about by using Birch-type proxies for temperature and composition.

Explanation:

HOPE THIS HELPS! :)

Answer:

False. Not everything can turn into a black hole. The formation of a black hole requires a massive object, typically a star, to collapse under its own gravity. This collapse causes the object to become so dense that it creates a singularity, a point of infinite density at the center of the black hole, which is surrounded by an event horizon, the point of no return beyond which nothing, not even light, can escape. So, only objects with sufficient mass and gravity can become black holes.

Explanation:

Answer:

The study of the human perception of sound is called psychoacoustics.

Explanation:

The orbitals that can be used to delocalize the π electrons are the p orbitals.

In organic molecules, π bonding and π electron delocalization often occur in conjugated systems, such as in molecules with alternating single and double bonds or in aromatic compounds. In these systems, the p orbitals of the atoms involved in the π bonds overlap to form a π molecular orbital. This π orbital allows the π electrons to be delocalized over multiple atoms, resulting in increased stability and unique chemical properties. Therefore, the p orbitals play a crucial role in the delocalization of π electrons.

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Answer:

An atom is the smallest part of an element by itself, while molecules are built of multiple atoms.

At the summit of a 2 m hill, a cyclist (m = 90 kg) is moving at a speed of 4 m/s. The rider would have 2484 Joules of total energy.

Total kinetic energy, which represents all the energy in motion, and total potential energy, which represents all the stored energy in the system, combine to form mechanical energy.

As stated in the problem, a cyclist (m = 90 kg) is climbing a 2 m hill at a speed of 4 m/s.

The total kinetic energy of the biker

KE = 1/2 × m × v²

 = 0.5 × 90 × 4²

  = 720

Similarly, the total potential energy of the biker

PE = m × g × h

 =90 × 9.8 × 2

= 1764 Joules

The biker's total energy is equal to 720 plus 1764.

                                     = 2484 Joules

The biker's overall energy would therefore be 2484 Joules.

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When a boxer is moving away from a punch, the force experienced is reduced because the time of impact is increased.

The force of a punch is a product of mass and acceleration. The mass of the boxer and the fist of the opponent are constant, so the acceleration of the punch is also constant. However, if the boxer moves away from the punch, the distance that the fist has to travel to make contact with the boxer's body increases. As a result, the time of impact is longer, and the force is spread out over a longer period. This means that the force of the punch is reduced and is less likely to cause injury or knock the boxer down.

In addition, moving away from a punch can also reduce the accuracy of the punch, as the opponent's punch may miss its intended target due to the change in distance between the two boxers.

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Explanation:

Fnet = Ft - Ff = 60N - 20N = 40N

a = Fnet / m = 40N / 25kg = 1.6m/s².

Calculate resultant force:

R = ma

Descomposing:

F - Fr = ma

Replacing we have:

60 N - 20 N = 25 kg * a

Resolving:

40 N = 25 kg * a

40 N / 25 kg = a

1,6 m/s^2 = a

The aceleration is 1,6 meters per second squared.

Answer:

Explanation:

If I am not wrong

current = charge/time

All you have to take care of is the units should be in the same system

so

current = 12/(2*60)         ---------  2 min = 2*60 sec

current  = 12/120  = 0.1 amp

Answer:

Down Below

Explanation:

As nouns the difference between speed and strength

is that speed is the state of moving quickly or the capacity for rapid motion; rapidity while strength is the quality or degree of being strong.

Answer:

Explanation:is that speed is the state of moving quickly or the capacity for rapid motion; rapidity while strength is the quality or degree of being strong.

Answer:  15.9 m/s

Explanation:

KE = 1/2(mv^2)

190,000J = 1/2(3000kg)*v^2

1 J = 1 kg*m^2/s^2

190,000 kg*m^2/s^2 = 1/2(3000kg)*v^2

v^2 = (190,000 kg*m^2/s^2)/(1/2(3000kg))

v^2 = (190,000 kg*m^2/s^2)/(1500kg))

v^2 = 126.6667 m^2/s^2

v = 11.25 mm/s velocity of 3000kg vehicle

With the same kinetic energy, a vehicle of 1500kg would have a different velocity:

190,000 kg*m^2/s^2 = 1/2(1500kg)*v^2

190,000 kg*m^2/s^2 =(750kg)*v^2

v^2 = 253.33 m^2/s^2

v = 15.9 m/s

Here are the answers to the questions:1. Three main orbital changes that the earth undergoes and their time periods are:A. Precession- every 26,000 years B. Obliquity- every 41,000 years C. Eccentricity- every 100,000 yearsThese changes in the earth's orbit, together, have an impact on the amount of solar radiation that reaches the Earth's surface, which then affects climate change. Three cyclical orbital changes and their times associated with Milankovitch are:A. Eccentricity - every 100,000 yearsB. Obliquity - every 41,000 yearsC. Precession - every 26,000 years2. All EMR in order of wavelength are:- Gamma rays- X-rays- Ultraviolet radiation- Visible light- Infrared radiation- Microwave- Radio wavesForms of EMR from the sun that are reaching right now are UV radiation, visible light, and infrared radiation.

The number of forms of EMR reaching the moon right now is two, UV radiation, and visible light.The ozone layer is present in the stratosphere and is formed through a series of complex chemical reactions. The primary function of the ozone layer is to protect the earth from the harmful effects of UV radiation by absorbing it. The balance of EMR plays a critical role in the greenhouse effect. As the amount of greenhouse gases increases, the amount of energy that is absorbed by the Earth's surface also increases. Carbon dioxide and other greenhouse gases can absorb and emit infrared radiation, which plays a crucial role in climate change.3. The four forms of heat transfer to and on planet earth are:- Conduction- Convection- Radiation- AdvectionThese four forms of heat transfer are responsible for weather on planet Earth.

For example, when the sun heats the ground, it results in conduction, which then results in convection as the air heats up and rises. This can lead to cloud formation and precipitation.4. The time it takes for EMR from the University of Delaware to reach:A. Moon - About 1.28 secondsB. Jupiter - About 33.75 minutesC. Closest star (not the sun) - About 4.37 yearsD. Your mother - This question is not clear, please provide more context.

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Answer:

Explanation:

which of the following has the smallest particles

Biker 1's acceleration:

(25 mph) / (3 s) = ((25 mi/h) • (1/3600 h/s)) / (3 s) ≈ 0.00231 mi/s²

Biker 2's acceleration:

(85 mph) / (8 s) = ((85 mi/h) • (1/3600 h/s)) / (8 s) ≈ 0.00295 mi/s²

Biker 2 has the greater acceleration.

Answer:

50 mph

Explanation:

doesn’t have direction

50 mph is not a velocity bcos it doesn't have direction

Answer:

Yes

Explanation:

I love THAT SONG. And it is a good essay.

Answer: ( yes i do like your essay! )

I am breaking down in tears. /j

I should've expected this and i still fell for it  

The two cars will be 40 meters apart after 5 seconds.

Given,

Now, we can use the equation of motion, d = u * t, to calculate the distance traveled by Car A and Car B, where,

Distance traveled by Car A in 5 seconds,

d1 = u1 * t

= 20 * 5

= 100 m

Distance traveled by Car B in 5 seconds,

d2 = u1 * (t - t1)

= 20 * (5 - 2)

= 60 m

So, the two cars will be 100 - 60 = 40 meters apart after 5 seconds.

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The complete question is:

Two cars, Car A and Car B start at the same point. Car A moves with a constant velocity of 20 m/s, while Car B leaves the starting point 2 seconds later. How far apart are the two cars after 5 seconds?

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Based on the Doppler effect, the electromagnetic waves reaching Earth from a galaxy that is moving away from Earth would experience a decrease in frequency.

option C.

The Doppler effect is a phenomenon where the frequency of waves (such as electromagnetic waves or sound waves) is shifted as a result of the relative motion between the source of the waves and the observer. When a source of waves is moving away from an observer, the waves get stretched out, resulting in a decrease in frequency. This is known as redshift for light waves, which are a type of electromagnetic waves.

In the context of a galaxy moving away from Earth, the electromagnetic waves (such as light) emitted by the galaxy would experience a redshift, which means the frequency of the waves would decrease. This is a key observation in astronomy and cosmology that has been used to provide evidence for the expanding universe and the Big Bang theory, as galaxies in the universe are generally observed to be moving away from each other, causing their light to be redshifted.

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The square object's swinging motion can be represented by a simple pendulum. The object's center of mass lies at the intersection of its diagonals, and its moment of inertia may be computed as I = (1/12)ml2.

The frequency of the object's oscillation may be computed using the small angle approximation as f = (1/2) (mgl/I), where g is the acceleration due to gravity. The length of the pendulum is equal to the distance from the center of mass to the point of attachment, which may be computed as l/22. We get f = (1/2) (4g/l) by substituting the moment of inertia and the length into the frequency equation.  a result, the frequency of  oscillation of the square object is independent of its mass and is only determined by the length of its sides and the acceleration due to gravity. The frequency of oscillation is approximately 0.83 Hz for a square object with sides of length l.

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The given statement is that in beams with circular cross-sections, transverse shear stress acts parallel to the y axis over the entire depth of the shape.

The tension that develops as a result of the internal shearing of a beam as a result of a shear force applied to the beam is known as shearing stress.

One-half of the difference between the primary stresses is the maximum shear stress. It should be noticed that the primary planes equation, 2p, results in two angles between 0° and 360°.

The primary stresses brought on by bending are typical tension and compression stresses. However, the state of stress within the beam also includes large normal stresses caused by bending in addition to shear stresses caused by the shear force, even though the former is often of a lesser order than the latter.

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hi <3

i would say it is 'electricity'

hope this helps :)

Answer:

elp me please with the question  p osted rn im

taking a test and need it

Explanation:

The average force exerted by the wall on the ball is 190.5 N.

We can use the impulse-momentum theorem to solve this problem. According to the theorem, the impulse of a force on an object is equal to the change in momentum of the object:

I = Δp

where

I is the impulse,

Δp is the change in momentum.

In this case, the ball experiences a change in momentum in both the x and y directions due to the collision with the wall. Let's consider the x direction first.

Initial momentum in x direction =  \(p_{x1\)  = m*v*cos(∅)

Final momentum in x direction =  \(p_{x2\)  = -m*v*cos(∅)

The negative sign in \(p_{x2\)  indicates that the direction of momentum is reversed after the collision.

The change in momentum in x direction is:

Δ\(p_x = p_x2 - p_x1\)

       = -2m*v*cos(∅)

Now let's consider the y direction.

Initial momentum in y direction = \(p_{y1\) = m*v*sin(∅)

Final momentum in y direction = \(p_{y2\) = m*v*sin(∅)

The y component of velocity is not changed due to the collision with the wall as the wall does not apply any force in the y direction.

The change in momentum in y direction is:

Δ \(p_y = p_{y2} - p_{y1\)

        = 0

Therefore, the total change in momentum of the ball is:

Δp = √(Δpₓ² + Δ \(p_{y^2\))

     = 2m*v*cos(∅)

The impulse of the wall on the ball is equal to the change in momentum of the ball:

I = Δp = 2m*v*cos(∅)

 = 2*3.50 kg * 11.0 m/s * cos(60.0°)

  = 38.1 Ns

The average force exerted by the wall on the ball is:

F = I / Δt

   = 38.1 Ns / 0.200 s

    = 190.5 N

Therefore, the average force exerted by the wall on the ball is 190.5 N.

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Answer:

50 Joules

Explanation:

Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid. If a chunk of copper with a mass of 467.5 g in air is found to have an apparent mass of 431.4 g when completely submerged in an unknown liquid. (a) The mass (in g) of fluid does the copper displace will be36.1 g (b) The volume of copper (in cm3), using its density will be 51.944 \(cm^{3}\) (c) The fluid's density will comes out to be 0.694 g/\(cm^{3}\).

Given,

The mass of the copper chunk, M = 467.5 g

Apparent mass of the copper chunk, m = 431.4 g

According to the Archimedes' principle

(a) The mass of fluid does the copper displaces = M - m

= 467.5 g - 431.4 g

=36.1 g

(b) To calculate the density of the copper chunk we must know its density, which is 9 g/\(cm^{3}\),

So, volume of the copper = Mass (M)/density

= 467.5/9

= 51.944 \(cm^{3}\)

(c) The density of the fluid will be the mass of the fluid divided by the volume, which can be represented as;

Density = Mass/ volume

= 36.1/51.944

= 0.694 g/\(cm^{3}\)

Hence, the mass of fluid does the copper displaces will be 36.1 g, volume of the copper chunk will be 51.944 \(cm^{3}\) and density of the fluid will be 0.694 g/\(cm^{3}\).

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Answer:

The answer is 5 a

Explanation:

First subtract two from ten then because of the friction. Next divide 40 kg by 8 N. When you do that you will get 5 for acceleration. Always make sure that you put the symbol next to your answer.