In order for generators to work, mechanical energy must be harvested. (C)
Which of the following statements is true?
Efficiency is calculated by multiplying work input and work output.
Only a few machines are 100 percent efficient.
Some machines are frictionless.
The ratio of work output to work input is always less than one.
Answer:
The ratio of work output to work input is always less than one.
1) Describe the characteristics of each air mass.
a) An air mass develops near the Equator over the Caribbean Sea.
b) An air mass develops over a large land mass in the upper latitudes of the Northern Hemisphere.
(both need to be answered)
Answer:Continental air masses are characterized by dry air near the surface while maritime air masses are moist. Polar air masses are characterized by cold air near the surface while tropical air masses are warm or hot. Arctic air masses are extremely cold.
Explanation:
a. In subtropical areas like the Caribbean Sea and the Gulf of Mexico, maritime tropical air develops.
Explain about the characteristics air mass?Large air masses are capable of engulfing substantial portions of a continent's or a body of water's land surface. They penetrate the troposphere far up.The mass as a whole experiences similar temperatures and humidity levels. Nonetheless, as an air mass shifts away it from point of origin, its temperature and humidity do change.A: In subtropical areas like the Caribbean Sea and the Gulf of Mexico, maritime tropical air develops. It is connected to thunderstorms and warm, muggy weather.
B: Continental Large, high-latitude land masses, like northern Canada or Siberia, are where polar air masses form. It comes from northern Canada or Alaska in the Northern Hemisphere. It transports dry weather to the United States as it goes south. Low humidity and temperature are both present.
Know more about the air mass
https://brainly.com/question/30762234
#SPJ1
The diagram shows the moon and Earth in space.
Which is the best label for the dotted-line arrow?
Group of answer choices
A- moon’s attraction to the Sun
B- force of Earth’s gravity
C- orbit of the moon around Earth
D- moon’s motion without gravity
Answer:
moon's motion without gravity
What is plasma?? Explain in detail.
Answer:
Plasma is a what is sometimes thought to be a fourth state of matter that is not solid liquid or gas. Hope this helps :)
Explanation:
only known planet able to support life
1
Earth
2. closest planet to the sun
7
Mars
3. hottest planet in the solar system
Jupiter
4. largest planet in the solar system
Neptune
5. large ring system
Mercury
6. blue color from methane gas
Uranus
7. once had water on surface
Venus
8. rotates on its side
Saturn
Why did the chicken cross the road?
(excepting any answers)
Answer:
to get to other side
because it could not be stopped by death
Benefits from fission as energy
Answer:
It can provide cheap energy resources for the planet. ...
It offers a low-emission energy solution. ...
It works for extended periods of time. ...
It is a reliable source of energy. ...
It provides high concentrations of energy. ...
It has the lowest annual mortality rate of any energy resource.
Explanation:
Explanation:
Low-cost energy
Although building nuclear power plants has a high initial cost, it’s relatively cheap to produce energy from them and they have low operating costs.
Reliable
One of the biggest benefits of nuclear energy is that it is a reliable power generation source.
Zero-carbon emissions
Nuclear power reactors do not produce any carbon emissions. This is a huge advantage over traditional sources of energy, like fossil fuels, which releases tons of carbon dioxide into the atmosphere.
Nuclear fusion is the holy grail of harnessing energy. If we can learn to control atomic fusion (the same reactions as those that fuel the sun), we could practically have unlimited energy.
High energy density
It is estimated that the amount of energy released in a nuclear fission reaction is ten million times greater than the amount released when burning fossil fuels
How can you explain why the sun appears to be moving through the sky during the day
Answer:From Earth, the Sun looks like it moves across the sky in the daytime and appears to disappear at night. This is because the Earth is spinning towards the east. The Earth spins about its axis, an imaginary line that runs through the middle of the Earth between the North and South poles.
Explanation:
please brainliest
When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
help please :((
////
/
Answer:
c)
Explanation:
b) and d) are incorrect because there is only one wave, but there are two fields.
a) is incorrect because the electric field and magnetic field are not parallel, they are perpendicular, or 90 degrees to one another, so this means:
c) is correct.
What type of energy transfer is taking place as the coils in a toaster heat?
Answer: A toaster uses infrared radiation to heat a piece of bread (see How Thermoses Work for information on infrared radiation). When you put your bread in and see the coils glow red, the coils are producing infrared radiation.
Conduction
Because
When operating in this mode, heat is transferred between two entities that are really in contact.
Where are the reproductive parts of a plant located?
Leaves
Flower
Roots
Stem
Answer:
FlowerExplanation:
The flowers are the reproductive parts of a plant. Stamens are the male reproductive part and pistil is the female reproductive part.Earth's atmosphere is composed of
A.
iron, oxygen, and silicon.
B.
nitrogen, oxygen, and trace amounts of other gases.
C.
water, liquid oxygen, and trace amounts of other liquids.
D.
carbon dioxide, ozone, and magnesium.
Answer: B
Explanation:
:)
2. What happens to the wavelength as the frequency increases?
Answer:
the wavelength gets shorter
Explanation:
The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.
Black to move and capture a hanging piece . Select the best move
A) Nxg3
B) Bxg3
C) Qxg5
Answer: A
Explanation:The Pawn moves directly forward, never backward or to the side. Pawns capture a piece that is one square diagonally forward. Though Pawns normally cannot move diagonally, this is the only way they capture.
Based on the information provided, the best move to capture a hanging piece would be: A) Nxg3
What would be the best move to capture a hanging piece ?Nxg3 would be the best move to capture a hanging piece.
This move involves sacrificing the knight to capture the hanging piece, which could be a bishop or pawn, depending on the position of pieces. After Nxg3, the opponent may capture the knight with different piece, but the player who made the move will have successfully captured the hanging piece.
However, it's important to note that the best move ultimately depends on the overall strategy of the player and the position of the other pieces on the board.
To know more about chess, refer
https://brainly.com/question/1401793
#SPJ1
Could someone please help?
the Conservation of Momentum states that the momentum of the system before the collision the momentum of the system after the collision
why is it difficult for a car to round a curve at high speed
Answer:
Because the force required to produce this acceleration equals the mass of the car x acceleration, the group of the car is the same but the acceleration is a lot more hence a much bigger force is required. So this is why it's harder for cars to corner at a high speed rather than lower.
Answer:
Vehicles are heavy and have a lot of inertia. This means that if you drive too fast on a curve, your vehicle will keep going straight instead of going around the curve, no matter how hard you drive or slow down to keep it in your lane. Centrifugal force creates a strong outward pull on your vehicle. So all you need to do is slow down before entering a corner. Reducing your speed when you are already on a bend can cause your car to skid.
Let’s say you want to buy a pair of shoes that cost $150 and you ask your parents to help you pay for them. Your dad offers to give you the full $150, but you have to pay him $25 a month, plus an additional $5 a month in interest until you pay it off. Your mom offers to give you $75 towards the shoes, no time limit of when to pay her back and you don’t have to pay any interest. Which option do you think is the best?
Answer:
I think it is your mom
Explanation:
Because you don't have to pay interest
How can you make a sound louder?
adding more frequency
removing energy
removing frequency
adding more energy
Answer:
BY adding more energy
Explanation:
Because by adding energy it will cause the string/sound to vibrate more which can cause more air particles to more and longer making the sound louder.
which statement describes how adding oil effects the mechanical efficiency of a car's engine?
Answer:
Mechanical efficiency accounts for losses due to engine friction and ancillaries such as the lubricant pump, coolant pump, fuel pump and cooling fan. Engine friction arises whenever there is relative motion between parts. Journal bearings on the crankshaft, connecting rods and camshaft as well as piston rings and piston skirts are important sources
Explanation:
Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
1. explain why mid-sized cars and SUVs have different rollover fatality rates.
2.explain why mid-sized cars and SUVs have the same fixed-object fatality rates.
Plz answer these questions im begging you to answer both will report if u only answer one.
Answer:
1: Their higher center of gravity increases their risk of rollovers. Their larger mass increases their braking radius, reduces visibility, and increases damage to other road users in collisions. Their higher front-end profile makes them at least twice as likely to kill pedestrians they hit.
2: In recent years automakers have reduced the threat SUVs and pickups pose by more closely aligning their energy-absorbing structures with those of cars. Fuel economy can be improved without sacrificing safety.
Explanation:
What does it mean to say that friction resists motion? And how is inertia similar to Newton’s 1st law?
Answer:
1.Friction is a catchall word that refers to any force that resists relative tangential motion (or intended motion). "Relative tangential motion" is a fancy way to say "slipping" or "sliding". Its direction is opposite the relative velocity (or intended velocity).
2.Newton’s first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain at rest or remain in motion. Inertia is related to an object’s mass.
Explanation:
Label the parts and include the measurements.
wave # crest trough wavelength
1 1 cm 1 cm 2 cm
2 3.5 cm 3.5 cm 2.5 cm
3 .5 cm .5 cm 3 cm
4 2 cm 2cm .5 cm
Concluding question: State which wave you think has the highest frequency and which might have the lowest frequency. Explain the reasons for your selections.
Answer:
it's 3
Explanation:
Use the data in the table to explain how you could determine the volume of the block.
To find the volume of the block, subtract the initial water volume from the final water volume, convert the change in water volume to cubic centimeters, and consider it as the volume of the block.
To find the volume of the block using the measurements provided.
1. Calculate the change in water volume:
The initial water volume is given as 62.3 mL, and the final water volume is given as 89.5 mL. To determine the change in water volume, we subtract the initial volume from the final volume: 89.5 mL - 62.3 mL = 27.2 mL. This value represents the increase in water volume caused by placing the block in the graduated cylinder.
2. Convert the change in water volume to cubic centimeters:
Since 1 mL is equivalent to 1 cubic centimeter (cc), we can directly convert the change in water volume from milliliters to cubic centimeters. In this case, the change in water volume is 27.2 mL, which is also equal to 27.2 cc.
3. Determine the volume of the block:
When the block is placed in the graduated cylinder, it displaces some amount of water, resulting in an increase in water volume. By measuring this increase in volume, we can determine the volume of the block itself. In this case, the change in water volume of 27.2 cc represents the volume of the block.
By following these steps, we can find the volume of the block based on the provided measurements.
Therefore, By deducting the initial water volume from the final water volume and converting the difference in water volume to cubic centimeters, the block's volume can be calculated. the volume of the block is 27.2 cc.
To learn more about measurements click:
https://brainly.com/question/28109798
#SPJ1
000000
EEEEEEEEEEE
What is the outcome (dependent) variable in this experiment?
A. The types of materials
B. The number of lightbulbs
C. The number of amps
D. The type of battery
Answer:
I believe it's B, the number of lightbulbs.
Explanation:
The other things in the question flow INTO the lightbulb. The outcome is the lightbulb after the other items being used to do something to the lightbulb, and the outcome is whatever happens to it.
Where is energy coming from to move the propeller in this image?
a wind turbine with three long propeller blades
Public Domain
Clouds
Grass
Rocks
Wind
In which state is the best known source of petrified wood located? A Arizona B Alaska C California D Colorado
Answer:
Arizona.
Explanation:
Petrified Forest National Park is an American national park in Navajo and Apache counties in northeastern Arizona. Named for its large deposits of petrified wood, the park covers about 346 square miles (900 square kilometers), encompassing semi-desert shrub steppe as well as highly eroded and colorful badlands.
Moving the ball with short pushes by the inside or outside of either foot is defined as:
A.Kicking
B.Dribbling
C.Heading
D.Trapping
Answer:
dribbling
Explanation:
Answer:
b
Explanation: