Below, match- the correct answer to the question.

the universe is infinite in extent and will expand forever.

On the basis of our current best estimate of the present mass density of the universe, astronomers think that the universe is infinite in extent and will expand forever.

The includes as evidence for the big bang.

1) The universe is expanding, as observed.

2) Independent proof of the omnipresent nature of microwave radiation throughout space.

3) The universe has an average temperature of 2.7 Kelvin.

To learn more about density of the universe visit:

https://brainly.com/question/4902544

#SPJ4

Explanation:

\(net \: force \: = gravitation \: force - resistance \\ 10000 = F - 9000 \\ F = 19000\)

Answer:

In science, motion is defined as a change in position. Position is the location of the object (whether it's a person, a ball, or a particle) at a given moment in time

Explanation:

2.18X103 N force must be exerted on a nail with a circular tip of 1.00 mm diameter to create a pressure.

diameter, d = 0.95 mm = 0.95x10-3m

P = 3.1X10^9 Pa

r = d/2 = 0.95/2 x 10^-3 m

= 0.475 x 10^-3 m

Area = \(\pi\) r2

= 3.14 x ( 0.475 x 10^-3 m)2

=  = 3.14 x 0.225 x 10^-6

= 0.706 × 10-6 m2

Force = PXA

= 3.1 x 10^9 x 0.70 6 × 10^-6

F = 2.18X103 N

Pressure , within the physical sciences, the perpendicular force in step with unit per area , or the stress at a factor inside a restricted fluid.

A easy instance of pressure can be seen by retaining a knife to a bit of fruit. In case you keep the flat part of the knife towards the fruit, it might not reduce the area. The force is spread out of a massive vicinity (low strain).

The SI unit of pressure is pascal (represented as Pa) which is identical to one newton in line with rectangular metre (N/m2 or kg m-1s-2).

Learn more about pressure here:- https://brainly.com/question/28012687

#SPJ4

Explanation:

Consumerism is a social and economic order that encourages the purchase of goods and services in ever-greater amounts. ... In economics, consumerism refers to economic policies placing emphasis on consumption.

Not a straight up answer, but moreover to help you get it: (Circuit Boards)

Aside from the tasks it performs, perhaps the most important function of a circuit board is providing a way to integrate the electronics for a device in a compact space. A PCB allows components to be correctly connected to a power source while being safely insulated. Also, circuit boards are less expensive than other options because they can be designed with digital design tools and manufactured in high volume using factory automation.

Partially straight up, helping you  get the answer: (Copper Chloride)

Copper(II) chloride is the chemical compound with the chemical formula CuCl 2. This is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate.

Answer:

Your body just being crushed from the side. With a side-impact we see much more severe injuries to the thorax and upper-body; you get a lot more rib fractures; a lot more damage to the lungs and internal organs because of the side-impact.

Explanation:

.

Answer:

Everyone gets killed

Explanation:

Thanks for the free answer lol

If you see trees on a hill that tilt uphill, it is likely that you have observed a specific type of mass wasting known as creep.

Creep is a slow, gradual type of mass wasting that occurs when soil or regolith moves slowly downhill.

Here is a step-by-step explanation:

1) Creep is caused by various factors, including changes in temperature, moisture content, and freeze-thaw cycles.

These factors cause the soil to expand and contract, which leads to the gradual downhill movement of the soil.

2) As the soil moves downhill, it can cause trees on the hill to tilt uphill.

This is because the soil moves very slowly, and the trees are unable to keep up with the movement, resulting in the uphill tilt.

3) Creep is a type of mass wasting that is characterized by slow, continuous movement of soil or regolith.

This movement can occur over a long period of time, and may be difficult to detect unless you observe the effects of the movement, such as the uphill tilt of trees.

4) Other signs of creep may include tilted fence posts or retaining walls, as well as cracks or bulges in the ground.

These signs may indicate that the soil is moving downhill, even if the movement is not immediately visible.

5) Creep can cause significant changes to the landscape over time, and can even pose a risk to infrastructure and property.

It is important to monitor areas that are prone to creep and take steps to prevent damage or mitigate the effects of the movement.

To know more about creep visit link :

https://brainly.com/question/16966418

#SPJ11

According to Ohm's Law, the value of \(\frac{dI}{dR} \rvert \rvert R=-6\) is -3/4 or -0.75.

Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to the resistance of the conductor. It can be mathematically represented as:

V = I * R

Where:

V represents the voltage (in volts),

I represents the current (in amperes),

R represents the resistance (in ohms).

To calculate dI/dR at R = -6 using Ohm's Law equation I = V/R, we can differentiate the equation with respect to R while treating V as a constant:

\(\frac{dI}{dR} = \frac{d}{dR} \left(\frac{V}{R}\right)\)

Using the quotient rule for differentiation, we have:

\(\frac{dI}{dR} = \frac{R \frac{dV}{dR} - V \frac{dR}{dR}}{R^2}\)

Since V is a constant (V = 27), the derivative dV/dR is zero. Also, dR/dR is equal to 1. Substituting these values, we get:

\(\frac{dI}{dR} = \frac{R * (0 - 27) * 1}{R^2}\)

\(=\frac{-27}{R^2}\)

Therefore, dI/dR at R = -6 is:

\(\frac{dI}{dR} \rvert \rvert R=-6\) \(=\frac{-27}{(-6)^2}\)

\(= -\frac{27}{36}\)

= -3/4 or -0.75 (in fractional notation).

To know more about Ohm's Law

brainly.com/question/1247379

#SPJ11

The angle of refraction of the light is 28.88°

Refractive index, also called index of refraction, measure of the bending of a ray of light when passing from one medium into another. If i is the angle of incidence of a ray in vacuum (angle between the incoming ray and the perpendicular to the surface of a medium, called the normal) and r is the angle of refraction (angle between the ray in the medium and the normal), the refractive index n is defined as the ratio of the sine of the angle of incidence to the sine of the angle of refraction; i.e., n = sin i / sin r.

The refractive index of light from air to water is 1.33

Therefore n = sin i / sin r.

1.33= sin40/sinr

sinr= sin40/1.33

sinr= 0.643/1.33

sinr = 0.483

r= sin^-1(0.483)

r= 28.88°

therefore the angle of refraction is 28.88°

learn more about refractive index from

https://brainly.com/question/12469161#

#SPJ1

The angle of refraction, given that the light passes from air into water at an angle of 40.0° to the normal, is 29°

Snell's law states as follow:

index of refraction (n) = Sine i / Sine r

n = Sine i / Sine r

Where

With the above formula, we can obtain the angle of refraction as follow:

n = Sine i / Sine r

1.33 = Sine 40 / Sine r

Cross multiply

1.33 × Sine r = Sine 40

Divide both sides by 1.33

Sine r = Sine 40 / 1.33

Sine r = 0.4833

Take the inverse of Sine

r = Sine⁻¹ 0.4833

r = 29°

Thus, the angle of refraction is 29 °

Learn more about angle of refraction:

https://brainly.com/question/13393027

#SPJ1

With merely a 2. 3 m/s beginning velocity, a horizontally dart launch accelerates upward at a rate of -9.8 m/s².

The rate at which speed and distance for velocity vary over time is known as acceleration. Anything is said to have been accelerated when it goes quicker or slower in a single direction.

When an item accelerates positively, it moves more quickly than it did before. In the first instance, the moving automobile showed positive acceleration. The acceleration is accelerating in a way that is comparable with the direction in which the vehicle is speeding up and velocomotion is accelerated in a route that is compatible with the direction in which the vehicle is

Let's say a body of mass (m) is shot from a height (h) above surface of the planet. As it descends at a faster rate, it eventually reaches the ground.

Under the influence of gravity, which is acting at a distance r from the earth's core, the body begins to accelerate in that direction.

Then, ma = GMm/r²

a = GM/r²

Therefore, the value of the acceleration due to gravity (g) = GM/r2.

Any object freely falling to the surface of the earth has acceleration due to gravity is 9.8m/s².

The earth's gravitational attraction is felt by the object if it shifts away from the planet's surface. Dart's vertical acceleration is therefore equivalent to -g.

As a result, the dart's vertical acceleration is equivalent to -9.8m/s2.

To know more about acceleration visit:

https://brainly.com/question/2303856

#SPJ4

The magnitude of the electric field at that point is 2 × 10⁷ N/C.

The electric field at a point can be determined from the force experienced by a charge at that point, using the equation:

E = F/q

where;

In this case, the force experienced by a charge of 1 μC (or 1 × 10^-6 Coulombs) is 0.02 N, so the electric field can be calculated as follows:

E = F/q = 0.02 N / (1 × 10^-6 C)

E = 2 × 10⁷ N/C

Learn more about electric field here: https://brainly.com/question/14372859

#SPJ1

Answer:

:) :::::::::::::::::::::::::::::::))))

R=10+15+30

55 is the answer to the question

I probably don't have to tell you that the other answer is nonsense, but I'll do it all the same, just in case... Half-life is defined as the time it takes for some radioactive substance to decay to half its original amount.

If it takes n half-lives for some substance with a starting amount of A to decay to a final amount of B, then

\(B = \dfrac{A}{2^n}\)

1. If the half-life is x, then after 1 half-life, 5000 units of this substance decays to 2500 units. After another half-life, this decays to 1250. After another, this in turn decays to 625.

So 3 half-lives are required.

In terms of the equation above, we solve for n such that

\(625 = \dfrac{5000}{2^n} \implies 2^n = 8 \implies n=3\)

since 2³ = 8.

2. Count how many times you halve 15,000 to end up with 3750:

15,000/2 = 7500

7500/2 = 3750

===>   2 half-lives

In other words,

\(3750 = \dfrac{15,000}{2^n} \implies 2^n = 4 \implies n=2\)

3. After 1 half-life, you would end up with

12,000/2 = 6000

and after another half-life,

6000/2 = 3000

i.e.

\(\dfrac{12,000}{2^2} = \dfrac{12,000}4 = 3000\)

4. After 1 half-life, you have

26,000/2 = 13,000

After 2 half-lives,

13,000/2 = 6500

After 3 half-lives,

6500/2 = 3250

After 4 half-lives,

3250/2 = 1625

i.e.

\(\dfrac{26,000}{2^4} = \dfrac{26,000}{16} = 1625\)

5. If the half-life is 3 years, then 15 years = 3 half-lives.

In the last 3 years, 20,000 would have decayed to 10,000.

In the second-to-last 3 years, 40,000 would have decayed to 20,000.

In the first 3 years, 80,000 would have decayed to 40,000.

i.e.

\(\dfrac{x}{2^3} = 10,000 \implies x = 8\times10,000 = 80,000\)

A continental polar air mass is characterized by its cold, dry, and stable nature, typically resulting in clear skies and fair weather conditions. It has limited moisture content and originates from polar regions, far from the influence of warm oceanic air masses.

A continental polar (CP) air mass typically exhibits the following characteristics: Cold: CP air masses originate from polar regions, so they are generally cold in nature. They form over large landmasses, far from warm oceanic influences. Dry: Since CP air masses form over land, they have minimal moisture content. These air masses lack significant interaction with bodies of water, which limits their ability to pick up mois ture. Stable: CP air masses are often associated with high pressure systems, resulting in stable atmospheric conditions. The colder air is denser, which restricts vertical motion and limits the development of convective storms and precipitation. Clear skies: The stable nature of CP air masses inhibits the formation of clouds and promotes clear skies and generally fair weather conditions. Potential for temperature fluctuations: CP air masses can undergo significant temperature changes, especially when moving across contrasting geographic regions. This variability can lead to rapid temperature shifts and influence local weather patterns.

Learn more about polar regions here:

https://brainly.com/question/31369861

#SPJ11

Answer:

Read the explanations ●

Explanation:

Electric power is the rate which energy is transformed to or from a part of an electrical circuit. A battery can deliver energy or a circuit element , the power is equal to the voltage difference across the element multiplied but the current...

Answer:

See explanation below -

Explanation:

Electrical power is, by definition, the rate at which electrical energy is absorbed in a circuit. However, we are asked the electrical power with respect to current.

This is a perfect example of Ohm's law, or the formula of power. It defines the relationship between power, voltage and current, as such -

P = VI

As you can see, electrical power is directly proportional to the current.

Now the potential difference is also recognized as the voltage, and is similarly directly proportional to the electrical power.

Hope that helps!

Answer:

Explanation: We need to find the equivalent of the given imaginary number with 22 power:

Using exponent properties, we can rearrange this as:

Simply how they share electrons distinguishes the various bond kinds. Polar bonds share unevenly, ionic bonds don't share at all, and covalent bonds share equally.

Simple electron sharing patterns distinguish the various bond types.Covalent bonds are created when electrons are shared. Despite the fact that both thermosetting plastics and thermoplastics are polymers, how they react to heat is different. Thermoplastics can melt in the presence of heat after curing, whereas thermoset plastics retain their  and remain solid in the presence of heat. Both their weight and chemical stability are low. excellent thermal insulation and low thermal conductivity. Glass fibers and mineral fillers are typically heavily incorporated into thermoset resins. Polymers called elastomers can be stretched far beyond their original length and can be quickly and compressed to almost their original dimensions.

Learn more about covalent bond here:

https://brainly.com/question/12661797

#SPJ4

Answer:

rotation

Explanation:

Im pretty sure. Please heart and mark brainliest

Answer:

cycle

Explanation:

either rotation or cycle. I would think.

Explanation:

1st- states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. 

2nd- states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it. (most important law)

3rd- states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. (law of action/reaction)

To calculate the magnitude of the acceleration of the sofa in units of m/s2, we need to use Newton's Second Law of Motion, which states that the force acting on an object is equal to the mass of the object times its acceleration, F = ma.

We also need to account for the force of friction, which opposes the motion of the sofa and is equal to the coefficient of kinetic friction times the normal force, or Ff = μkFN.

Since the sofa is sliding across a horizontal floor, the normal force is equal to the weight of the sofa, or FN = mg. Therefore, the force of friction is Ff = μkmg.

Now we can plug in the given values and solve for the acceleration of the sofa:

F - Ff = ma

486.99 N - (0.23)(83.47 kg)(9.8 m/s2) = (83.47 kg)a

Solving for a, we get:

a = (486.99 N - (0.23)(83.47 kg)(9.8 m/s2))/(83.47 kg)

a = 3.82 m/s2

Rounding to two decimal places, the magnitude of the acceleration of the sofa is 3.82 m/s2.

To learn more about acceleration here:

https://brainly.com/question/460763#

#SPJ11

In order to calculate a planet's orbital period, we must know the dimensions of its orbit. The correct answer is C.

To calculate a planet's orbital period, we need to know the dimensions of its orbit, specifically the semi-major axis. The semi-major axis is the average distance between the planet and its parent star (assuming a circular or nearly circular orbit). The orbital period of a planet is determined by its distance from the star and the mass of the star.

The tilt of the planet's axis (option A) affects the planet's seasons but does not directly impact its orbital period. The radius of the planet (option B) is not directly related to its orbital period either. The velocity of the planet (option D) can vary along its orbit, but it is not sufficient on its own to calculate the orbital period. Hence the correct answer is C.

To know more about planet's orbital period, here

brainly.com/question/17246360

#SPJ4

Answer: ratty

Explanation: u r ratty

The length of the minute hand of a wall clock is not relevant to finding the distance traveled by the end of the pointer in a given amount of time. The only important factors are the length of the hour hand and the amount of time that has passed.

If the length of the hour hand is X cm, then the distance traveled by the end of the pointer in 2 hours can be calculated as follows:

Distance traveled = (X * π * 2) cm

Here, π is the mathematical constant approximately equal to 3.14. The factor of 2 in the formula represents the number of hours that have passed. Therefore, to find the distance traveled in 2 hours, you would need to know the length of the hour hand and substitute it for X in the formula above.

Answer:

A mousetrap makes use of a simple machine called a lever.

Explanation:

In a second-class lever the effort force is at the other end, with the load in the middle. In a third-class lever, the load is at the end and the effort force is between the fulcrum and the load. When you set the mousetrap, you are using a second-class lever. Sorry if I get this wrong. I am in 5th grade! ♥

The kinetic energy of the car is 125000 J (joules).

The kinetic energy (KE) of an object is given by the formula KE = 1/2 * m * v², where m is the mass of the object and v is its velocity. Plugging in the values for the car, we get:

Therefore, the kinetic energy of the car is 125000 joules.

Kinetic energy is the energy an object possesses due to its motion. It is defined as one half of the mass of the object multiplied by the square of its velocity. Kinetic energy is a scalar quantity and is measured in joules (J) in the International System of Units (SI). The greater the mass and velocity of an object, the greater its kinetic energy. When an object loses its motion, its kinetic energy is transformed into other forms of energy.

To learn more about kinetic energy, here

https://brainly.com/question/999862

#SPJ1

Answer:  metals, non metals and semi metals

Explanation:

Speeding tickets are not the best punisher for reducing speeding behavior because not everyone perceives tickets as bad .So  option C is correct.

Here are some other reasons why speeding tickets may not be the best punisher for reducing speeding behavior:

To learn more about enforcement visit: https://brainly.com/question/28831464

#SPJ11

if a volume of air is warmed it expands due to increased translational kinetic energy as it expands it will start to cool.

We can then conclude that at constant pressure, temperature and volume are directly proportional: temperature increases, volume increases; decrease temperature, decrease volume.

In this case, the higher the temperature, the greater the kinetic energy that acts on the molecules of this gas, so when the gas expands, these molecules find more space and collide less, which will cause the gas to cool.

See more about volume at brainly.com/question/1578538

#SPJ12