How is energy essential to our way of life?

Answers

Answer 1

because ot helps us to do our work. it is the capacity of doing work. the energy like mechanical energy, chemical energy etc have been helping humans from almost origin of our life. transformation of energy also helps us grately. in this way energy is essential to our way of life.

Related Questions

calculate the speed of a sound wave produced from a guitar if it creates 38 compressions each second with 0.57 meter wavelength

Answers

Good job kid that's right

What si the name of the state change water is going through as it boils?

Answers

it evaporates into a vapor

~~~hope this helps~~~
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whats the basic particle that makes up matter

Answers

The most basic and broken down particles you can find that make up all matter are atoms. While many mistake them as molecules, atoms are the most fundamental building blocks of matter. Even molecules are made up of atoms. Hope this helped!

When a book is resting on a level table and you are not pushing on it , is there a frictional force between the book and table ?

Answers

No because there is no movement to cause friction.

I don’t think so because there is no moving at all which means no friction

In a heat engine, if 700J of heat enters the system, and the piston does 400J of work, what is the final internal thermal energy of the system if the initial energy is 1200J?

Answers

Hello!

Answer:

1500 J

Explanation:

We are going to use the first law of thermodynamics which can be summarized as:

Δ[tex]U=Q-W[/tex]
[tex]U2-U1=Q-W[/tex]

So, we have that:

[tex]U1=1200j \\ W=400 \\ Q=700j[/tex]

[tex]U2=Q-W+U1[/tex]

By substituting we have:

[tex]U2=700 J - 400 J + 1200J=1500J[/tex]

Have a nice day :)

How does the current in a circuit change if the resistance is doubled?

Answers

if the resistance is increased then the energy output of the circuit would decrease

The current is halved is the correct answer

how does applying force to an object affect its motion

Answers

The force you apply to an object and its motion are directly proportional. The more net force is used against an object, the more it will (or be likely) to move. (this does not factor in friction or resistance which honestly, is just another variable)

Batteries should only be removed from the premises by a licensed battery hauler for recycling. A) True B) False

Answers

its true you !!!!!!!!!!!!!!!!!!!!!!1

Answer:

True

Explanation:

Batteries carry acids and electrolytes which if comes in contact with human skin can cause severe effects and sometimes it can become fatal. Therefore a great care is needed while replacing batteries. To avoid any danger and harmful circumstances, batteries should always be replaced by a licenced battery haulers for recycling.

The difference in the composition of the terrestrial planets and the gas giants can be explained by the different condensation ____________________ in the regions near and far from the sun during the formation of the solar system.

Answers

Terrestrial rocky planets are mostly made of metals, which need higher temperatures than gases in order to condense.
According to the Solar Nebula theory, temperatures high enough to condense metals were closer to the Sun, while towards the outside of the System, temperatures where lower.
This is the reason why terrestrial rocky planets are closer to the Sun, while gaseous planets are further from the Sun.

Hence, the difference in the composition of the terrestrial planets and the gas giants can be explained by the different condensation temperature in the regions near and far from the Sun during the formation of the Solar System.

the difference in the composition of the terrestrial planets and the gas giants can be explained by the different condensation TEMPERATURES in the regions near and far from the sun during the formation of the solar system.

What is the electric potential of a 2.2 µC charge at a distance of 6.3 m from the charge? Recall that Coulomb’s constant is k = 8.99 × 109 N • ___ V
What is the electric potential at a distance of 99 m from the charge?___ V

Answers

According to Edge, the answers is

3100 V

and

200v

Final answer:

The electric potential of a 2.2 µC charge at a distance of 6.3 m is 3.14 × 10^6 V. At a distance of 99 m, the electric potential is 2.02 × 10^4 V.

Explanation:

To calculate the electric potential, we can use the equation V = kQ/r, where V is the electric potential, k is Coulomb's constant (8.99 × 10^9 N • V^-2 • m^2 • C^-2), Q is the charge, and r is the distance from the charge.

For a charge of 2.2 µC at a distance of 6.3 m, we can plug in the values to find:

V = (8.99 × 10^9 N • V^-2 • m^2 • C^-2)(2.2 × 10^-6 C)/(6.3 m) = 3.14 × 10^6 V

Similarly, for a distance of 99 m, the calculation would be:

V = (8.99 × 10^9 N • V^-2 • m^2 • C^-2)(2.2 × 10^-6 C)/(99 m) = 2.02 × 10^4 V

because the universe is expanding what happens to the light from other galaxies as it reaches earth

Answers

it is red shifted hope i helped

It is red shifted, red shifted light means that objects in space are receding away from us.

What are non examples of Asexual reproduction

Answers

Bacteria and Binary Fission-
Many single-celled organisms rely on binary fission to reproduce themselves. All bacteria reproduce by binary fission.
Budding and Hydras-
Hydras are a type of freshwater cnidarian related to jellyfish, sea anemones and corals. Hydras reproduce asexually by developing small, genetically identical polyps that protrude from the parent. These polyps break off from the parent to form a new organism in a process called "budding."
Parthenogenesis and Copperheads- Though most of the organisms that use asexual reproduction are invertebrates, several species of vertebrate animals do make use of it. Some, like copperhead snakes, can reproduce asexually as an alternative to their typical sexual reproduction. Through a process called parthenogenesis -- literally "virgin birth" -- copperhead females can give birth to live young without having been inseminated by a male, even when males are available, according to National Geographic. In this form of parthenogenesis, the polar body, or a cell produced alongside the female's egg, acts as a sperm cell and essentially "fertilizes" the egg. Parthenogenesis has been observed in several species of reptiles, birds and sharks, and is especially common in insects.

We have that Non examples of Asexual reproduction will be the reproduction that requires two cells to reproduce.

Examples

BuddingHumansBirdsinsects

From the question we are told

What are non examples of Asexual reproduction

Generally

Asexual reproduction this are the type of reproduction in which a single sex cell is able to reproduce The Traditional union of sex cells in this case is not needed This can be found in plants and microorganisms

Therefore

non examples of Asexual reproduction will be the reproduction that requires two cells to reproduce.

Examples

BuddingHumansBirdsinsects

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Chalk and talc are insoluble. what do you think thus term means

Answers

When the term insoluble is used in general, it usually refers to solubility in water.
Thus this means that chalk and talcum powder, both , are not soluble in water.
When these two are are soluble in other solvents, the solvent is specified.
Hope this helps. :)

n the picture of a planet in orbit around its star area a is double that of area b. What is true of the time the planet takes to travel A1A2 as compared to B1B2

Answers

The Kepler's laws predict the planetary motion, so there are three laws for this, namely:

1. The orbit of a planet is an ellipse with the Sun (the sun is a star!) at one of the two focus.

2. A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.

3. The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.

So, let's use second law. The Sun sweeps out equal areas during equal intervals of time means that if A = B, the time the planet takes to travel A1A2 is equal to the time the planet takes to travel B1B2, but given that A = 2B, then takes twice the time to travel A1A2 compared to B1B2.

Answer:

twice as much

what is the mass of a 4900 N bobsled

Answers

A single kilogram is equivalent to 9.8 newtons, meaning that to find the weight of the bobsled, you would simply divide the weight by 9.8. Doing this we find that the bobsled is 500kg

4900 / 9.8 = 500

Answer:

500 Kg.

Explanation:

The problem is giving us the weight of the object the weight is different from the mass of an object

Weight is the mass of any object multiplied by gravity (the value of gravity is approximately [tex]9.8\frac{m}{s^2}[/tex] ).

The unit of weight are newtons that equals

[tex]N= Kg.\frac{m}{s^2}[/tex]

[tex]W= m.g[/tex]

we cleared the mass of the formula

[tex]W=m.g\\ m=\frac{W}{g} \\ m= \frac{4900N}{9.8 \frac{m}{s^2} }= 500 Kg[/tex]

If light intensity obeyed an inverse square law you would expect to find the intensity of light to decrease as the square of the distance increases?
True or false

Answers

Inverse square law: [tex] \frac{I_{2} }{I_{1}}= (\frac{d{2} }{d_{1}})^2 [/tex]
where
[tex]I_{1}[/tex] is the intensity at distance 1
[tex]I_{2}[/tex] is the intensity at distance 2
[tex]d_{1}[/tex] is distance 1
[tex]d_{2}[/tex] is distance 2

The inverse squared law state that intensity decreases in inverse proportion to the distance squared. So if light obeyed that rule, it will decreases its intensity as the square of the distance increases.

We can conclude that the correct answer is: true.

this is a true statement

what two forces are there when you skydive

Answers

Gravity is pulling you down and friction is slowing you down so you don't plummet to the ground at super high speeds.

1). The force of bravado, machismo, and testosterone, propelling you forward, to DO THIS and impress your woman.

2). The force of reason and self preservation, telling you that this is crazy, and you must NOT jump out of a perfectly good airplane that's not on the ground.

problems with solar energy include

Answers

the inability of current technology to capture large amounts of the Sun's energy the inability of current technology to store captured solar energy inconsistencies in the availability of the resource lack of demand for solar energy.

Final answer:

The problems with solar energy include its intermittency and the high upfront cost of battery storage systems. The production of photovoltaic cells generates hazardous waste, and deployment of large-scale solar systems can harm undeveloped habitats. Also, solar energy cannot directly power all sectors like cars and airplanes due to its diffuse nature.

Explanation:

There are a number of challenges and problems associated with the use of solar energy. Some primary issues include its intermittency, as solar energy capture is not constant, and can be particularly low during the nighttime or in seasons with less sunshine. This inconsistency can be offset by battery storage, but such storage solutions add substantial cost, need regular maintenance, and require the environmentally unfriendly process of battery replacement.

Another concern is the environmental impact of photovoltaic (PV) cells, the main technology for generating solar energy. The process of manufacturing PV cells requires the use of chemicals and solvents, generating some hazardous waste. Besides, the deployment of large-scale solar arrays in undeveloped areas or fragile ecosystems like deserts can cause habitat destruction. Solar thermal systems, another form of solar energy, also pose problems as they use potentially hazardous fluids for heat transfer and need significant amounts of water for cleaning and cooling.

Finally, solar energy can't directly power some sectors and applications such as cars and airplanes due to its diffuse nature, making it not entirely substitutable with other energy sources. While the sun provides an abundant source of energy, transitioning to a solar-powered society poses significant challenges.

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Food borne pathogens are harmful to the human body in any amount

Answers

Not true. For all diseases caused by pathogens (even viruses), there is a minimum infectious dose needed to cause disease.

It does vary between different pathogens & between the condition of the host (immunocompromised vs. healthy), but if the minimum infectious dose is not met- then the body is typically able to snuff out the intruders before they can do any real damage.

Hope that helps!

what are the approximate orbital periods of Phobos and Deimos respectively

Answers

I think its about 2.5 years

How much heat is absorbed by a 66g iron skillet when its temperature rises from 7oC to 20oC?

Answers

The heat absorbed is calculated using the following equation:
Q = mCΔT

Q = heat absorbed
m = mass = 66 g
C = specific heat of iron = 0.449 J/g.°C
ΔT = temperature change = 20 - 7 =13°C

Therefore,
Q = 66*0.449*13 = 385.242 J

A remote control car travels at a uniform speed of 3.5 m and reaches its destination in five minutes. How far did the remote control car travel

Answers

The speed of the remote control carriage is uniform = 3.5m / s.
The elapsed time is 5 minutes.
You can use the formula
speed = distance / time.
Clearing the distance, which is what we want to find, we have:
distance = speed*time.
However, the speed is in units of seconds and the time in units of minutes. To perform the operation we need to have everything in the same units.
So.
5minutes x 60seconds / 1minute = 300 seconds
Finally:
distance = 3.5m / s * 300s = 1050 meters.
The remote control car traveled 1050 meters

a ball is thrown horizontally from the roof of a building 45m tall and lands 24m from the base what is the initial speed?

Answers

To find the initial speed of a ball thrown horizontally from a 45m tall building, we first calculate the time of flight using the vertical motion equation and then determine the initial horizontal speed using the range and time of flight.

Finding the Initial Speed of a Horizontally Thrown Ball

To calculate the initial speed of a ball thrown horizontally from the roof of a building that is 45 meters tall and lands 24 meters from the base, we can use the kinematic equations of motion for projectile motion.

Step 1 - Time of Flight

To find the time it takes for the ball to hit the ground, we use the vertical motion equation:

s = ut + 0.5*at^2

Since the ball is thrown horizontally, the initial vertical velocity (u) is 0 m/s. s is the height of the building (45 m) and a is the acceleration due to gravity (9.8 m/s2).

By substituting the known values, we can solve for t.

Step 2 - initial Horizontal Speed

Now, knowing the time of flight, we can find the initial horizontal speed(vx) using the horizontal motion equation:

Range = vxt

The range is given as 24 m. Therefore, vx = Range / t.

Final Answer

After calculating, we get the initial horizontal speed of the ball, which is necessary to cover the horizontal distance within the derived time of flight.

A 12 volt parallel circuit is drawing 2 amps what is the total amount of power consumed?

Answers

The answer is C. 24 watts
Please mark as Brainliest, thanks.

the half-life of iodine-131 is 8 days. if a sample originally contains 0.96 g of the isotope, how much will remain after 16 days

Answers

The half-life of a substance is the time the substance takes to decay until the amount of the sample is half of its initial amount.

In this problem, the half-life of iodine-131 is 8 days. This means that after 8 days, only half of the initial sample will be left. After another 8 days (16 days), the sample will be reduced by another factor 1/2, so only 1/4 of the initial sample will be left.

Since the initial sample was 0.96 g, after 16 days the amount of iodine left is
[tex]m= \frac{1}{4}(0.96 g) =0.24 g[/tex]

After 16 days, there will be approximately 0.24 grams of iodine-131 remaining in the sample.

How the half-life of iodine

The half-life of iodine-131 is 8 days, which means that every 8 days, the amount of iodine-131 in a sample will be reduced by half.

After 16 days, which is two half-lives, the amount of iodine-131 remaining can be calculated as follows:

First half-life: 0.96 g / 2 = 0.48 g remaining

Second half-life: 0.48 g / 2 = 0.24 g remaining

Therefore, after 16 days, there will be approximately 0.24 grams of iodine-131 remaining in the sample.

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Franklin’s hometown is flooding due to a severe storm. He is evacuating the area in his vehicle. What should he do if he comes across a flooded area or flowing water?

Answers

Franklin must not drive through a flood for there may no road at all under the water, unless he is familiar with the road and the flowing water is below one foot.

Moreover, if negotiating a flooded section of road, he must drive in the middle where the water will be at its shallowest and he must not drive through water against approaching vehicle to consider other drivers.

Franklin should not attempt to cross any areas with flowing water because he could get injured or swept away. Franklin should also not drive on flooded roadways because it can be hard to tell how deep the water is and his vehicle could easily get stuck. If his car does get stuck, Franklin should leave it immediately.

The earth takes 1 year to revolve around the sun at 1 A.U. distance (an astronomical unit = 93,000,000 miles). If a planet were 4 A.U. from the sun, how many years would it take to make 1 orbit?

Answers

Kepler's third law states that the square of the orbital period is proportional to the cube of the semi-major axis of its orbit. In equation form, P^2 / a^3 = constant. For the earth, (1 y)^2 / (1 AU)^3 = 1, so the constant is 1. For a planet 4 AU from the sun:
P^2 / (4 AU)^3 = 1P^2 = 64P = 8 years

Unsaved Earth is located in a region known as __________.
options:
a.the asteroid belt

b.the Kuiper Belt

c.the Oort Cloud

d.the Goldilocks Zone

Answers

The answer is the Goldilocks Zone.

The Goldilocks zone refers to a zone around the star that is habitable. This means that it is not too hot and not too cold.

The Kuiper belt is located beyond Neptune. The Oort cloud is even further out in the solar system, past Pluto. The asteroid belt is located in between the orbit of Mars and Jupiter.

A parent isotope has a half life of 1 million years. If a rock contained 20 mg of the parent isotope when it formed, how much parent isotope would be left after 2 million years?

Answers

about 5mg or 10 hope this help have nice day

a blank is an electric circuit that produces a magnetic field.
whats the blank?

Answers

Answer:

Explanation: A coil is an electric circuit that produces a magnetic field

Other Questions

A teacher's failure to uphold the legal and professional responsibilities associated with the care of young children is called John Hancock was one of the founding fathers committed to liberty. How did he demonstrate this commitment?F. By writing the Articles of Conferation G. By serving as commander in chief of the confederate army H. By organizing Committees of Correspondence J. 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