Accounts for about 70% of the mass-energy content of the universe. It acts in opposition to gravity.
a
pressure eventually become, causing nuclear fusion
b
objects shift toward red on the spectrum & objects are moving away
c
Spiral galaxies appear to be a rotating disk of stars and dust

Answer:

Although expansion seems to imply a Big Bang, no other specific predictions of the Big Bang theory were tested and confirmed until the 1960s.  

Explanation:

Answer:

Today, the consensus among scientists, astronomers and cosmologists is that the Universe as we know it was created in a massive explosion that not only created the majority of matter, but the physical laws that govern our ever-expanding cosmos.  This is known as The Big Bang Theory. For almost a century, the term has been bandied about by scholars and non-scholars alike. This should come as no surprise, seeing as how it is the most accepted theory of our origins.

;)

The size threshold above which we should consider wave phenomena in circuit analysis at 10 GHz is 0.1 m or 10 cm.

When analyzing circuits, the consideration of wave phenomena becomes important when the circuit dimensions are comparable to the wavelength of the signals being transmitted. The wavelength is inversely proportional to the frequency of the signal, so higher frequencies have shorter wavelengths.

Given that the frequency is 10 GHz (10⁹ Hz), we can calculate the corresponding wavelength using the formula:

λ = c / f

where λ is the wavelength, c is the speed of light, and f is the frequency.

At 10 GHz, the wavelength is approximately 0.03 m or 3 cm. According to the given statement, wave phenomena must be considered when circuit dimensions exceed 0.1.

learn more about Wave phenomena here:

https://brainly.com/question/7327213

#SPJ11

The average plant height for Site 1 and Site 2 of the test site, respectively, is calculated to be 101.03 and 148.16, respectively. Plants at site 2 are often taller than those at site 1.

Because the normal heights of distinct plant species differ, the average height of a species refers to the average of individual measurements obtained on numerous plants.

106.68 + 104.14 + 109.22 + 99.06 + 106.68 + 86.36 + 111.76 + 81.28 + 104.14 = 909.32 Site 1 plants cultivated at the test site

location 1 plants produced at the test location have an average height of 909.32/9=101.03.

147.32 + 154.94 + 147.32 + 144.78 + 154.94 + 137.16 + 142.24 + 154.94 + 149.86 = 1333.5 Site 2 plants cultivated at the test site

Site 2 plants produced at the test site had an average height of 1333.5/9=148.16.

To know more about plants, refer

brainly.com/question/26557284

#SPJ1

Answer:

Based on the symptoms described, Mike is most likely experiencing heat cramps. Heat cramps are painful, involuntary muscle spasms that usually occur during heavy exercise in hot environments. The sweating that occurs causes the body to lose salts and minerals, which can result in cramping. The symptoms include muscle pain or spasms usually in the abdomen, arms, or legs, which matches the symptoms Mike is experiencing.

Answer:

3N to the right

Explanation:

ANSWER

EXPLANATION

Parameters given:

Speed of electron, v = 4.10 * 10^3 m/s

Magnetic field, B = 1.45 T

Magnetic force, F = 1.40 * 10^(-16) N

To find the angle that the velocity of the electron makes with the magnetic field, apply the formula for magnetic force:

where θ = angle

q = electric charge = 1.6 * 10^(-19) C

Make θ the subject of the formula:

Therefore, the angle that the velocity makes is:

To find the second angle, subtract the angle from 180 degrees:

The angles are:

Visible light, x-rays, and radio waves are forms of electromagnetic waves that can travel through vacuum and mater.

On Mercury and the Moon, we notice that larger craters dwarf smaller craters.

On both Mercury and the Moon, the surfaces are covered with impact craters, which are formed when asteroids or comets collide with these bodies. While craters come in various sizes, we can observe that larger craters tend to dominate and overshadow smaller ones. This indicates that there have been significant impacts throughout the history of Mercury and the Moon, resulting in the formation of these larger craters.

The size difference between larger and smaller craters is particularly evident on Mercury, as it lacks an atmosphere to erode or weather the craters. Therefore, the larger craters on Mercury remain well-preserved and are easily distinguishable. On the Moon, although there is no atmosphere to the same extent as Earth's, some erosion and weathering processes occur due to micrometeorite impacts, the solar wind, and occasional volcanic activity. Nonetheless, the larger craters still retain their dominance over the smaller ones.

Understanding the relationship between the sizes of craters on Mercury and the Moon provides valuable insights into their geological history and the frequency and magnitude of impacts these bodies have experienced over time. The presence of larger craters suggests that more substantial objects have collided with these celestial bodies, potentially causing significant disturbances and shaping their surfaces.

Learn more about craters

brainly.com/question/31838267

#SPJ11

The three characteristics that all the plants most likely share are: have xylem and phloem; lack pollen. Option D.

In seed plants, xylem and phloem are essential vascular tissues responsible for the transport of water, nutrients, and sugars throughout the plant. Xylem transports water and minerals from the roots to the rest of the plant, while phloem carries sugars and other organic compounds from photosynthetic regions to other parts of the plant.

The absence of pollen indicates that these plants do not reproduce through the production and dispersal of pollen grains. Instead, they likely reproduce through other means, such as the production of seeds.

This combination of having xylem and phloem while lacking pollen suggests that the plants in question are likely gymnosperms. Gymnosperms are a group of seed plants that include conifers, cycads, ginkgoes, and others. These plants typically produce seeds that are not enclosed within a fruit, and they rely on other methods such as wind or insects for pollination.

It is important to note that this conclusion is based on the provided information and is subject to change depending on further details about the specific characteristics of the gathered plants. SO Option D is correct.

For more question on plants visit:

https://brainly.com/question/32057181

#SPJ8

The net force on the block parallel to the incline is

∑ F = -mg sin(θ) = ma

where m is the mass of the block, g = 9.8 m/s² is the acceleration due to gravity, θ is the angle the incline makes with the horizontal, and a is the acceleration of the block. Solving for a gives

a = -g sin(θ)

so the block would slide down the incline with acceleration

a = - (9.8 m/s²) sin(30°) = -4.9 m/s²

Answer:

instinct

Explanation:

Explanation:

∑τ = Iα

(6 N) (0.80 m) = I (0.5 rad/s²)

I = 9.6 kg m²

Latest news: NASA and SpaceX announce plans for a joint lunar mission. The mission, called Artemis 3, aims to land the first woman and the next man on the moon by 2024.

SpaceX's Starship will be used as the lunar lander.

NASA and SpaceX have been working together to advance space exploration. The Artemis 3 mission is part of NASA's Artemis program, which aims to establish a sustainable human presence on the moon and prepare for future crewed missions to Mars. By partnering with SpaceX, NASA aims to leverage the company's expertise in space transportation and technology.

The use of SpaceX's Starship as the lunar lander marks a significant shift in lunar exploration. The Starship is a fully reusable spacecraft designed to carry both crew and cargo to destinations like the moon and Mars. Its large payload capacity and versatility make it an ideal choice for lunar missions.

Artemis 3 will not only land astronauts on the moon but also serve as a stepping stone for future missions, including the establishment of a lunar outpost and the utilization of lunar resources. It represents a crucial milestone in humanity's journey to explore and potentially inhabit other celestial bodies.

Learn more about moon here:

https://brainly.com/question/30653068

#SPJ11

A brake is applied to a spinning wheel, initially moving counterclockwise, causing it to slow down with a constant angular acceleration of magnitude 5.40 rad/s2. Immediately after the brake is applied, the wheel rotates through 50.4 rad during a 4.00 s time interval. The angular speed (in rad/s) of the wheel at the end of this time interval is: 21.6 rad/s

The angular speed of the wheel at the end of the 4.00 s time interval can be calculated by using the equation for angular acceleration,

\(ω = ω0 + αt.\)

In this case, the initial angular speed of the wheel is 0 rad/s since it was at rest when the brake was applied, and the angular acceleration is 5.40 rad/s2.  

This gives us the equation\(ω = 0 + 5.40t.\)

Substituting the time of 4.00 s, we get \(ω = 5.40(4.00) = 21.6 rad/s.\)

This is the angular speed of the wheel at the end of the 4.00 s time interval. This can also be determined by using the equation for the change in angular displacement, \(Δθ = ω0t + ½αt2.\)

In this case, the initial angular displacement of the wheel is 0 rad and the angular acceleration is 5.40 rad/s2. This gives us the equation

\(Δθ = 0 + ½(5.40)(4.002) = 43.2 rad.\)

Since the wheel rotated through 50.4 rad during the 4.00 s time interval, the angular speed must be \(ω = Δθ/t = 50.4/4.00 = 12.6 rad/s.\)

The angular speed of the wheel at the end of the 4.00 s time interval is 21.6 rad/s, due to the constant angular acceleration of magnitude 5.40 rad/s2. The angular speed can also be determined by using the equation for the change in angular displacement, which gives 12.6 rad/s.

To know more about acceleration refer here:

https://brainly.com/question/30499732#

#SPJ11

The disappearance of the reactant and not the appearance of the product in this experiment is flipping the sign-on rates for reactants.

The reaction rate is a measure of the change in concentration of the disappearance of a reactant or the change in concentration of the appearance of a product per unit of time. The vanishing rate value is always negative because the reactant concentration is consumed in the reaction. The product is formed in a reaction, so the rate of occurrence value is always positive.

The rate of reaction is defined as the rate of disappearance of reactants and the rate of appearance of products, and the rate constant is the constant of proportionality between reaction rate and concentration conditions. The rate of a chemical reaction can be measured as the rate of appearance of one of the products or the rate of disappearance of one of the reactants. If the reactant concentration decreases, use the negative sign to represent the rate of reaction for the reactant.

Learn more about The disappearance here:-https://brainly.com/question/16966928

#SPJ4

The statement "recognize that he is experiencing a complex psychiatric crisis, quickly load him into the ambulance, and transport without delay" is true.

In a general sense, recognizing that someone is experiencing a complex psychiatric crisis and providing appropriate medical attention and transportation is often a recommended course of action. However, it is important to consider that every situation is unique, and the specific response may vary based on factors such as the severity of the crisis, the individual's condition, and available resources.

In cases of psychiatric crises, it is crucial to prioritize the individual's safety and well-being. Prompt medical attention and transportation may be necessary to ensure they receive appropriate care and support.

However, it is essential to involve qualified professionals, such as mental health providers or emergency medical services, to assess the situation and determine the most appropriate course of action.

To know more about the complex psychiatric crisis refer here :

https://brainly.com/question/31821989#

#SPJ11

Developing an action plan is part of making decisions​ on the seven health skills, which are fundamental in healthcare.

The seven health skills can be defined as different aptitudes required to set healthcare decisions.

These health skills include:

In conclusion, developing an action plan is part of making decisions​ on the seven health skills, which are fundamental in healthcare.

Learn more about the seven health skills here:

https://brainly.com/question/11960287

#SPJ1

Answer:

6.3m/s

Explanation:

Given parameters:

Mass of the ball  = 0.5kg

Height  = 2m

Unknown:

Velocity when the ball hits the ground  = ?

Solution:

Since the potential  energy is transformed into kinetic energy;

            P.E  = K.E

              mgh  = \(\frac{1}{2}\) m v²

     cancelling m;

               gh  =  \(\frac{1}{2}\) v²

                v² = 2gh

                v  = √2gh

Insert the parameters and solve;

               v  = √2gh  = √ 2 x 9.8 x 2  = 6.3m/s

Answer:

Velocity is quickness of motion or action. A synonym is celerity; a simpler word is speed. In physics, velocity specifically refers to the measurement of the rate and direction of change in position of an object.pls pls mark me branilest

Answer:

Velocity is defined as displacement travelled per unit time in a fixed direction. It is a vector quantity as it has both magnitude and fixed direction.

Please mark me brainliest.

The AP Physics Equation Sheet is a resource provided by the College Board, which administers the Advanced Placement (AP) program in the United States. The AP Physics exams cover a range of topics in physics, including mechanics, electricity and magnetism, and thermodynamics, among others.

The essential equations and formulae that students could utilise on the test are included on the equation page. It is meant to aid in exam preparation and make sure that students have access to the relevant equations.

The equation sheet contains formulae for many different physical quantities, including, but not limited to, force, energy, power, velocity, acceleration, and electric charge. Formulas for specific subjects are also included, including those for Newton's equations of motion, work and energy, momentum and collisions, and electric circuits.

During the exam, students are permitted to utilise the AP Physics Equation Sheet, but it is assumed that they are already familiar with the equations and know how to use them to answer questions.

The equation sheet is not a replacement for a thorough comprehension of the fundamental ideas and tenets of physics.

For such more questions on ap physics sheet:

brainly.com/question/30639507

#SPJ4

The statement describes an advantage of recorded presentations is that the audience members have the opportunity to provide feedback. Thus, the correct option for this question is C.

A recorded presentation may be defined as a popular format of multimedia content with a duration of several seconds or minutes that significantly expresses the advantages of a product, service, or any idea with the support of interesting graphic images, concise text, and appropriate narration.

According to the context of this question, a recorded presentation delivers an advantage to the audience to provide feedback. This is because the process of recorded PowerPoint presentation gives the actual sense and understanding to the audience similar to the real event.

Therefore, the correct option for this question is C.

To learn more about Presentation, refer to the link:

https://brainly.com/question/24653274

#SPJ2

The most common measures of dispersion include the range, the variance, and the standard deviation.

Measures of dispersion are used to indicate the spread or variability of data. The range, variance, and standard deviation are some of the measures of dispersion.

The range is the difference between the largest and smallest value in a dataset.

The variance is a measure of the average squared deviation of each data point from the mean, while the standard deviation is the square root of the variance.

There are a variety of measures of dispersion, all of which are used to analyze the degree to which data points are scattered around the mean.

The measures of dispersion describe the spread of a dataset, indicating how the values differ from one another. The most widely used measures of dispersion are the variance and standard deviation.

Measures of dispersion include range, variance, standard deviation, and interquartile range. If there is a small dispersion, the values in a dataset are close to one another and near to the mean value.

If the dispersion is large, the values in a dataset are more spread out and further from the mean value. The most common measures of dispersion include the range, the variance, and the standard deviation.

learn more about  variance on :

https://brainly.com/question/9304306

#SPJ11

The most common measures of dispersion include the range, the variance, and the standard deviation.

Measures of dispersion are used to indicate the spread or variability of data. The range, variance, and standard deviation are some of the measures of dispersion.

The range is the difference between the largest and smallest value in a dataset.

The variance is a measure of the average squared deviation of each data point from the mean, while the standard deviation is the square root of the variance.

There are a variety of measures of dispersion, all of which are used to analyze the degree to which data points are scattered around the mean.

The measures of dispersion describe the spread of a dataset, indicating how the values differ from one another. The most widely used measures of dispersion are the variance and standard deviation.

Measures of dispersion include range, variance, standard deviation, and interquartile range. If there is a small dispersion, the values in a dataset are close to one another and near to the mean value.

If the dispersion is large, the values in a dataset are more spread out and further from the mean value. The most common measures of dispersion include the range, the variance, and the standard deviation.

learn more about  variance on :

https://brainly.com/question/9304306

#SPJ11

The pre - impact velocity of the bullet is 225 m/s.

We know that we would have to us the principle of the conservation of the linear momentum and in this case we know that the momentum before collision would be greater than the momentum that we have after collision as such we would have;

Momentum after collision = Momentum before collision.

(10 * v) + (80 * 0) = (10 + 80)25

10v = 2250

v = 2250/10

v = 225 m/s

The bullet would have a velocity of 225 m/s from the calculation.

Learn more about momentum:https://brainly.com/question/24030570

#SPJ1

Answer: The car slows down by 10 meters per second every second.

Explanation:

AnswerThe speed of a car is decreased uniformly from 30. meters per second to 10. meters per second in 4.0 seconds. What was the car's acceleration ?

We have the following data:

V (final velocity) = 10 m/s

Vo (initial velocity) = 30 m/s

ΔV  (speed interval)  = V - Vo → ΔV  = 10 - 30 → ΔV  = - 20 m/s

ΔT (time interval) = 4.0 seconds

a (average acceleration) = ? (in m/s²)

Explanation:

4230 J of net work is required to accelerate the merry-go-round from rest to a rotation rate of 1.00 revolution per 7.30 s, assuming it is a solid cylinder.

To determine the net work required to accelerate the merry-go-round from rest to a rotation rate of 1.00 revolution per 7.30 s, we need to use the formula for rotational kinetic energy:
KE = (\frac{1}{2}) I ω^2
Where KE is the kinetic energy, I is the moment of inertia (which for a solid cylinder is (1/2) MR^2), and ω is the angular velocity (which for 1 revolution per 7.30 s is 2π/7.30).
First, we can calculate the moment of inertia:
I = (\frac{1}{2}) MR^2 = (\frac{1}{2})(1460 kg)(7.00 m)^2 = 35915 kg m^2
Next, we can calculate the final rotational kinetic energy:
KE_final = (\frac{1}{2}) I ω^2 = (\frac{1}{2})(35915 kg m^2)(2π/7.30)^2 = 4230 J
Since the merry-go-round is starting from rest, the initial rotational kinetic energy is 0. Therefore, the net work required to accelerate it to this final kinetic energy is just equal to the final kinetic energy:
Net work = KE_final = 4230 J
In summary, 4230 J of net work is required to accelerate the merry-go-round from rest to a rotation rate of 1.00 revolution per 7.30 s, assuming it is a solid cylinder.

learn more about kinetic energy Refer: https://brainly.com/question/31425232

#SPJ11

If the radius of the cylinder is halved and length is kept unchanged then the density of air inside the cylinder will increase.

As it can be said that density is inversely proportion to the square of the radius.

Density of Cylinder

Density is the ratio of mass to volume.

The formula for density is: ρ= m/v.

The formula for the Mean Density of a cylinder is:

                                         ρ= m/ (π•r²•h)

where:

ρ is the density of the cylinder

m is the mass of the cylinder

h is the height of the cylinder

So, with increase in radius the of the cylinder there is decrease in the density of cylinder.

And on decreasing the radius of the cylinder there is increase in the density of the cylinder.

As it can be said that density is inversely proportion to the square of the radius.

To learn more about Density Of Cylinder

brainly.com/question/19245086

#SPJ4

Answer:

Density= 2.78 g/cm³

Relative density=2.8

Explanation:

To calculate the density of the cube we have to use the formula ρ=mass/volume

ρ stands for density.

So now we don't have the volume of the cube and to find the volume of the cube we have to use the formula a³

3³= 9 cm³

Now plug in the values. ρ= 25 g/9 cm³

ρ= 2.78 g/cm³

To find the relative density, we have to use the formula ρsample/ρH20

The sample means the density of the substance earlier. We do not know the density of water but it is constant at 997 kg/m³.

Now we have to make the units same so you change the unit of the density of cube to kg/m³

So, 25/1000= 0.025 kg

9/100×100×100 (because cm³ which means that there should be 3 meters to change the unit and to conver cm to meter we need to divide by 100 so 9cm/100, 9cm²/100×100, 9cm³/100×100×100)

=0.000009 m³

The new density= 0.025 kg/ 0.000009 m³

= 2777.78 kg/m³

Now plug the values into the formula:

relative density= 2.777.78 kg/m³ / 997 kg/m³

=2.8

There is no unit since kg/m³ and kg/m³ cancels

The coefficient of performance (COP) of a refrigerator is defined as the ratio of the desired cooling effect (in this case, heat extracted from the refrigerator) to the work input. Mathematically, it can be expressed as:

COP = Desired Cooling Effect / Work Input

In this case, the desired cooling effect is the heat exhausted by the refrigerator, which is given as 640 J per cycle. The work input is the amount of work required to operate the refrigerator, which is given as 240 J per cycle.

Substituting the values into the formula, we have:

COP = 640 J / 240 J

Simplifying the expression, we get:

COP = 2.67

Therefore, the refrigerator's coefficient of performance is 2.67.

learn more about "heat ":- https://brainly.com/question/934320

#SPJ11

The detergent solution used for washing dishes must be at least 110°F (option c) to effectively remove grease and bacteria.

To properly clean dishes, it is important to use a detergent solution at a certain temperature. The minimum temperature requirement ensures that the detergent is effective in breaking down grease and removing bacteria from the dishes.

The temperature of 110°F is often recommended as it provides the ideal balance between effectiveness and safety. At this temperature, the detergent can effectively dissolve and remove oily residues, food particles, and germs from the dishes. It helps to break down and emulsify fats and oils, facilitating their removal during the washing process.

Using hotter water can enhance the cleaning process by improving the detergent's ability to dissolve and remove contaminants. However, it is essential to strike a balance to prevent potential risks such as scalding or damage to delicate items. Therefore, maintaining a minimum temperature of 110°F ensures efficient cleaning while minimizing safety concerns.

It's worth noting that specific dishwasher models or dishwashing guidelines may recommend slightly different temperature ranges. It is advisable to follow the manufacturer's instructions or consult the dishwasher manual for the most suitable temperature settings for optimal dishwashing results.

Learn more about bacteria here:

https://brainly.com/question/3350115

#SPJ11