how are low-mass red giant stars important to our existence?

Answer:

Firstly they are, by design, easy to use in most scientific and engineering calculations; you only ever have to consider multiples of 10. If I’m given a measurement of 3.4 kilometres, I can instantly see that it’s 3′400 metres, or 0.0034 Megametres, or 3′400′000 millimetres. It’s not even necessary to use arithmetic, I just have to remember the definitions of the prefixes (“kilo” is a thousand, “megametre” is a million, “milli” is a thousandth) and shift the decimal point across to the left or the right. This is especially useful when we’re considering areas, speeds, energies, or other things that have multiple units; for instance,

1 metre^2 = (1000millimetre)^2 = 1000000 mm^2.

If we were to do an equivalent conversion in Imperial, we would have

1 mile^2 = (1760 yards)^2

and we immediately have to figure out what the square of 1760 is! However, the fact that SI is based on multiples of 10 has the downside that we can’t consider division by 3, 4, 8, or 12 very easily.

Secondly they are (mostly) defined in terms of things that are (or, that we believe to be) fundamental constants. The second is defined by a certain kind of radiation that comes from a caesium atom. The metre is defined in terms of the second and the speed of light. The kelvin is defined in terms of the triple point of water. The mole is the number of atoms in 12 grams of carbon-12. The candela is defined in terms of the light intensity you get from a very specific light source. The ampere is defined using the Lorentz force between two wires. The only exception is the kilogram, which is still defined by the mass of a very specific lump of metal in a vault in France (we’re still working on a good definition for that one).

Thirdly, most of the Imperial and US customary units are defined in terms of SI. Even if you’re not personally using SI, you are probably using equipment that was designed using SI.

By using vector, the total displacement is 36 km.

We need to know about vectors to solve this problem. Vector has magnitude and also direction. Displacement is included in vector. It can be written as

s = sx i + sy j + sz k

where s is displacement, sx is displacement on x-axis, sy is displacement on y-axis and sz us displacement on z-axis.

From the question above, we know that

east = positive x

west = negative x

s1 = 92i km

s2 = -56i km

Hence, the total displacement is

s = s1 + s2

s = 92i - 56i

s = 36i

Find the magnitude

|s| = √sx²

|s| = √36²

|s| = 36 km

Find more on vector at: https://brainly.com/question/25811261

#SPJ4

It is important to consider the percentage errors when analyzing experimental results, as it provides insight into the accuracy of the measurements taken. In this case, the smaller percentage error in the first order suggests that it may be a more reliable method for determining the wavelength of the sodium-emitted yellow lines.

Based on the data obtained in step p4, the wavelengths of the sodium-emitted yellow lines for the first order were found to be 589.36 nm and 589.47 nm for the second order.
When compared to the accepted values of 589.0 nm and 589.6 nm, the measured values had a percentage error of 0.06% and 0.13% for the first and second order respectively.
It is clear that the first order had a smaller percentage error compared to the second order, indicating that the measurements taken in the first order were more accurate. This could be due to various factors such as the alignment of the diffraction grating, the positioning of the light source, or the precision of the measuring equipment used.

To learn more about Wavelength Here:

https://brainly.com/question/12924624

#SPJ11

The orange was at a height of 3.26 m above the ground.

The third equation of motion is

v² - u² = 2aS

Given is an orange dropped from a tree and had a velocity of 8 m/s just before it hits the ground.

We can write -

[v] = 8 m/s

[a] = 9.8 m/s²

[u] = 0 m/s

Using third equation of motion, we get -

v² - u² = 2aS

64 - 0 = 2 x 9.8 x S

64 = 19.6 x S

S = 3.26 m

Therefore, the orange was at a height of 3.26 m above the ground.

To solve more questions on Kinematics, visit the link below-

https://brainly.com/question/14132842

#SPJ1

Answer: The answer is D

Explanation:

The answer to the given question is 820 Kelvin. Gauss' Law demonstrates how electric fields, E, can be produced by static electricity, q. Gauss' Law, which bears the name of German physicist Carl Friedrich Gauss, is the third of Maxwell's four equations. According to Gauss' Law, an electric charge, qv, or static electricity, produces an electric field, E. (voltage).

This question is an application of Gauss Law, which states that the pressure P and temperature T of an ideal gas are directly proportional to one another. In other words, adiabatic increase in pressure will result in the same rise in temperature. Mathematically,

it can be written as: 

P1/ T1 = P2/ T2

Therefore, Temperature T2 = 275 kPa * 298K / 100 kPa = 820 K. Thus, the minimum compressor exit temperature possible is 820 Kelvin.

Learn more about Ideal Gas laws here:

https://brainly.com/question/25290815

#SPJ4

A mass of 2.0 kg must fall freely from \(\frac{1}{2}\) d to gain the same amount of kinetic energy as 1.0 kilograms of distance d.

Kinetic energy describes the power of moving particles within a system or an object. In contrast to potential energy, which is independent of other stationary and moving objects in its immediate surroundings, kinetic energy is related to other objects. For instance, the object's kinetic energy will be higher if it is placed at a higher height or distance.

KE = PE

PE = mgh

m = mass of the object

g = (9.8 m/s²)

h = the height  

a 1.0-kilogram mass to gain the same amount of kinetic energy:

KE₁ = KE₂

mgh₁ = mgh₂

(1.0) (9.8) (d) = (2.0) (9.8) (h₂)

h₂ = \(\frac{1}{2}\) d

Learn more about kinetic energy here: https://brainly.com/question/29523818

#SPJ4

Answer:

use newtons gravity of law by launching a watermelon in frot of the wagon

Explanation:

If the charge on object A is doubled then the electric field will remain unchanged in any of the cases. It is so because the question is asking us whether the electric field which the object is experiencing is changing or not, but in actuality, due to charge change, the magnitude of the electric field is changing only.

The electric field's magnitude may be easily determined by calculating the force per charge on the test charge. The electric field would exert a force on the item when its charge doubled since it is inversely proportional to the electric charge. so won't have any effect.

The field is supposed to have a direction corresponding to the force that it would exert on a positive test charge. The electric field emanates from a positive point charge in an outward direction, and from a negative point charge in an inward direction.

A charge is a characteristic that describes how many more or fewer electrons than protons a matter unit has.

To know more about electric field and charge go to https://brainly.com/question/15805883

#SPJ4

We will have the following:

So, the nergy is 2.3 J.

Storm water runoff has a negative impact on a lake or pond environment by bringing nutrients and silt. It would hasten the succession of ponds.

Inland freshwater lakes and ponds, commonly referred to as lentic systems, are a diverse group of habitats that exist all over the world and offer vital resources and homes for both terrestrial and aquatic creatures.

A population of creatures that dwell in ponds is known as an ecosystem. Each organism depends on the others in this freshwater environment. There are three groups that make up the biotic components of the pond ecosystem. These individuals are referred to as producers, consumers, and decomposers.

To know more about lake or pond ecosystem visit :-

https://brainly.com/question/30005890

#SPJ4

The tires rotate through a total angle of approximately 1500 degrees during the boy's trip. To find the total angle the tires rotate through during the boy's trip, we need to calculate the circumference of the wheels and convert it into the corresponding angle.

The circumference of a wheel can be calculated using the formula C = 2πr, where r is the radius of the wheel. In this case, the radius is given as 30.0 cm, so the circumference is C = 2π(30.0 cm) = 60π cm.

Since the boy rides his bicycle for a distance of 2.5 km, we need to convert it to centimeters by multiplying it by 100,000 (1 km = 100,000 cm). Therefore, the distance traveled by the boy is 2.5 km * 100,000 = 250,000 cm.

The total angle the tires rotate through can be calculated by dividing the distance traveled by the circumference and multiplying it by 360 degrees (or 2π radians) since one complete revolution corresponds to 360 degrees (or 2π radians).

Total angle = (Distance traveled / Circumference) * 360 degrees. Total angle = (250,000 cm / 60π cm) * 360 degrees. Simplifying the expression, the total angle is approximately 1500 degrees.

Therefore, the tires rotate through a total angle of approximately 1500 degrees during the boy's trip.

To know more about circumference, refer here:

https://brainly.com/question/28757341#

#SPJ11

Answer:

Sound waves

Explanation:

The sound waves are bouncing off the walls around the corner

Answer:

Please show the wave interactions to choose from so I can give you an answer

Explanation:

(If diffraction is an answer it should be that!)

By (a) extending the object's travel distance, an inclined plane decreases the force required to move the object.

At this point, describing a force as a push or a pull is perfectly acceptable. There is no such thing as a force that an object "has in it" or "contains." A force is applied to one thing by another. The idea of a force encompasses both living and non-living things.  A force has the ability to alter or increase the velocity of a massed object. A simple way to express force is with a push or a pull.. The fact that a force has both a magnitude and a direction makes it a vector quantity.

Contact forces and remote action There are two distinct kind of forces. Your consistent use of force is obvious. Push and pull are basically forces. When you push or pull against an object, you apply force to it.

To know more about Force visit:

https://brainly.com/question/13191643

#SPJ4

Answer:

Lenz's law, in electromagnetism, statement that an induced electric current flows in a direction such that the current opposes the change that induced it. This law was deduced in 1834 by the Russian physicist Heinrich Friedrich Emil Lenz (1804–65).

Answer:

A constant feeling of pressure

Answer: A constant feeling of pressure

ANSWER

The problem cannot be determined or solved

EXPLANATION

This is the information we have:

• initial speed, v0 = 28 m/s

• acceleration, a = 2 m/s^2

We have to find:

• final speed, v

• final position, x

To find the final speed of an object we'd use the following formula:

And to find the distance an object traveled we'd use:

Note that for both we need to find how long the object was moving. In this problem, we don't have that information so we cannot determine the final speed or the distance the car traveled.

For example, the speed and distance at t = 2 seconds is not the same as at t = 20 seconds. Ideally, the car could keep speeding up indefinitely at the same acceleration.

Therefore, witht he given information the problem cannot be solved

Answer:

-2.1 m/seconds velocity

Answer:

Transfer of charge by touching is called conduction.

Answer:summer

Explanation:

Answer:

first day of summer

Explanation:

Answer:

electric cars

Explanation:

although electric cars are more expensive, you will save money on rhe gass bill because you won't need to pay for gas. they also make less harmful toxins for the earth

The law of conservation of mass is responsible for having the same number and kind of atoms at the beginning and end of the reaction.

It states that matter is neither created nor destroyed in a closed system. That is, when a chemical reaction takes place, the amount of each element in the starting material and product must be the same. For example, carbon atoms in coal become carbon dioxide when burned. A carbon atom changes from a solid structure to a gas, but its mass remains the same.

Mass Conservation Formula-

⇒ Mass of Reactants = Mass of Products

The law of conservation of mass is of great importance in the study and practice of chemical reactions. If a scientist knows the quantities of a particular reaction and the identities of the reactants, they can predict the number of products produced.

To know furthermore about Conservation Of Mass at

https://brainly.com/question/10663959

#SPJ4

Answer:

MOMENTUM= FORCE*MASS

= 140*5

= 700 kg⋅m/s

The correct statements about the wave include are distance a is the wavelength (Option B) and the number of dots per unit length is the frequency (Option D).

Wavelength is the distance between two successive points in a wave that are in the same phase (e.g., two consecutive peaks or troughs). In this case, distance a represents that distance. The number of dots per unit length is the frequency: Frequency is the number of wave cycles that pass a given point per unit of time. It is related to the number of dots per unit length in the representation of the wave.

To summarize, the correct answers are that distance a is the wavelength and the number of dots per unit length is the frequency.

Learn more about wavelength: https://brainly.com/question/4148390

#SPJ11

Explanation:

Optics is a branch of physics that is the study of light and vision. ... The branch of physics dealing with the nature and properties of electromagnetic energy in the light spectrum and the phenomena of vision. In the broadest sense, optics deals with infrared light, visible light, and ultraviolet light.

Answer:

B

Explanation:

Gravity, the attractive force between all masses, is what keeps the planets in orbit. Newton’s universal law of gravitation relates the gravitational force to mass and distance

The force of gravity is what gives us our sense of weight. Unlike mass, which is constant, weight can vary depending on the force of gravity (or acceleration) you feel. When Kepler’s laws are reexamined in the light of Newton’s gravitational law, it becomes clear that the masses of both objects are important for the third law, which becomes a3 = (M1+ M2) × P2. Mutual gravitational effects permit us to calculate the masses of astronomical objects, from comets to galaxies.