Answer: Find the answer in the explanation
Explanation:
The earth wire act as a protective conductor in which current flows to the earth. Whenever there is a faulty flow of current, the earth wire will protect an iPad with a metal casing from letting you get shocked by allowing the faulty current to flow directly to the earth.
With the use of fuse, the wire break when it detects a faulty flow of current and the device will automatically switch off because of break in circuit.
These are to protect you from electric shock from the iPad metal casing.
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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The arrow points to an example of
Wave
Question 5 options:
compression
prism
rarefaction
sound barrier
Answer:
sound barrier
Explanation:
Justin and Oscar each hit a baseball with a bat. The baseballs have the same mass, but the ball Justin hits has a greater acceleration. What might be the reason for the greater acceleration of Justin's baseball?
The acceleration is different in both cases because, the force applied is different. Acceleration is force divided by mass of the object. Thus, Justin had greater force than Oscar.
What is force ?Force is an external agent acting on body to change its motion or deform it. There are various kinds of forces such as frictional force, gravitational force, nuclear force etc.
According to Newton's second law of motion, the force acting on an object is the product of its mass and acceleration.
Thus, F = ma
Hence, as the force increases the body is accelerated more.
With the same mass for the two balls, the force used to hit it was different and thus, the acceleration differs in both cases. Therefore, Justin has the greater force.
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What uses for nanowhiskers can you imagine? (Short answer please)
Answer:
Suit (keeps you warm in cold water) removes stains on fabric
Explanation:
Chitin nanowhiskers are primarily used to reinforce polymer nanocomposites, but they are also used to prepare scaffolds, hydrogels, and sterile gauze, as sorbent materials in industry, water purification, and so on.
What are nanowhiskers?Nanowhiskers are a type of crystal nanofiber with a diameter less than 100nm and a length-to-diameter ratio greater than 100.
Fullerene nanowhiskers (FNWs) are thin crystalline fibers made up of C60, C70, endohedral, or functionalized fullerene molecules.
The Nanowhiskers repel stains by creating an air cushion around each cotton fiber. When something is spilled on the fabric's surface, the miniature whiskers actually prop up the liquid drops, allowing them to roll off.
Chitin nanowhiskers are principally sometimes used reaffirm nanocomposite, but they are also employed to make scaffolds, hydrogels, and sterile gauze, as well as sorbent materials in industry and water purification.
Thus, these are some of the uses of nano-whiskers.
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Hi guys :) I am in desperate need of help. Thanks <3
Answer:
yes me to i think its A
Explanation:
A man climbs a ladder. Which two quantities can be used to calculate the energy stored of the man at the top of the ladder.
A. The Weight of the man and the time taken only
B. The Weight of the man and the vertical distance moved only
C. The work don't by the man and the time taken only
D. The work don't by the man and the vertical distance moved only
Answer:The answer must be The weight of the man and the vertical distance moved.
Explanation: you calculate it by the force you applied times the distance you moved
In your own words, explain why the dishes remain in place when the magician pulls the cloth out from under them.
Newton's first law states that unless acted with by an external force, the dinnerware will remain immobile. The horizontal force acting on the objects on the table in this example is the frictional force between them and the table cloth, which sets them in motion.
According to Newton's second law, the force required to accelerate the tableware is proportional to the rate of acceleration. When the tablecloth is slowly pushed, the dinnerware adjusts to fit the modest rate of acceleration and moves with it. When the tableware is pulled swiftly, it needs to accelerate at a faster pace to keep up; but, the effort required to do so is larger than the frictional force available, thus it lags behind. The tableware 'stays put' when the cloth is tugged quickly.''
This question covers one of the most enigmatic aspects of our universe! Inertia is the easy answer to your question. In other words, because of inertia, when you remove the table linen off a table full of dishes, the dishes stay put. Matter's inertia is a property that characterizes its resistance to change in motion. When you're jogging and try to turn, you'll find that the faster you go or the bigger you are, the more difficult it is to shift direction.
Other examples of inertia include the following. Another example of inertia is when you are riding in a car and the driver rounds a corner and you feel pushed toward the door or over to the driver.
The dishes' inertia comes into play when the magician removes the cloth from underneath them.
The propensity of objects to resist changes in their state of motion is known as inertia. The dishes seek to preserve their original condition of rest when the fabric is quickly pulled because of inertia.
The dishes' and the cloth's friction is insufficient to rapidly overcome this inertia. As a result, the dishes initially hold in place before friction gradually takes over and causes them to slide.
Thus, the careful balance between inertia and friction results in this seemingly supernatural effect, producing a visually stunning illusion.
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What is the term for the light that hits a mirror?
angle of incidence
incident ray
Normal line
reflected ray
Incident Ray
This is a ray of light that strikes a surface
Answer:
Incident Ray
Explanation:
I just took the quiz.
what is the main difference between a theory and a law?
Answer:
A hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept
Explanation:
Answer:theory is yet to be prove over and over again and law is something thta has been proven and can repeat its self
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
summary about reference point and displacement
Answer: A frame of reference is a reference point with a set of directions. Your position is where you are located with respect to your reference point. The displacement of an object is how far it is from the reference point. It is the shortest distance between the object and the reference point.
Explanation:
4. The Himalayan Mountains tower as high as 8,854 m above sea level. The rate of plate motion is about 10 cm per year. Use the diagram to explain how the Himalayas formed. Predict how they might look in 10 million years.
Answer:
Forty million years ago, the continent of India, which was being carried northward by the Indo-Australian plate, collided with Asia forming the Himalayan mountain range (fold mountains). Since the initial encounter, the subcontinent of India has moved 2,000 kilometers farther north at a rate of 5 centimeters a year, sliding beneath Asia as it moves. In 10 million years India will plow into Tibet a further 180km. This is about the width of Nepal.
Answer:Since the initial encounter, the subcontinent of India has moved 2,000 kilometers farther north at a rate of 5 centimeters a year, sliding beneath Asia as it moves. In 10 million years India will plow into Tibet a further 180km. This is about the width of Nepal.
define acceleration
Answer:
In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object
Explanation:
i took the test
Which best describes electromagnetic waves?
A. transverse waves made up of electric and magnetic fields
B. longitudinal waves made up of vibrations that move through matter
C. mechanical waves that travel as ripples in water
D. sound waves that can only travel in a medium
Answer:
A
Explanation:
hope this helps!!!!!!!
Answer:
A
Explanation:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
they are transverse waves.
If a 1,500 kg car and a 4,000 kg truck were moving at the same speed down a steep hill, what statement is false?
A: The truck will have greater kinetic energy and be more difficult to stop.
B: The car has less mass, and therefore less kinetic energy, when compared to the truck.
C: Both vehicles would have their greatest kinetic energy as they reached the base of the hill.
D: The car's potential energy will be greatest when at its highest speed.
Answer:a
Explanation:because if you have a bigger or heavier truck I can be harder to stop then a car
The car kinetic energy not potential energy is greatest when at its highest speed.
Kinetic Energy:
It is the energy of the object which is due to the motion of object. The formula of kinetic energy is
\(\bold {KE = \dfrac 1{2} m v^2}\\\)
Where,
m - mass
v - velocity
The kinetic energy of the object is directly proportional to the mass of the object and square of the velocity of the object.
So, A, B and C are correct statement.
Therefore, the car kinetic energy not potential energy is greatest when at its highest speed.
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The range of wavelengths present in the different types of electromagnetic radiation is called the electromagnetic spectrum. The electromagnetic spectrum is illustrated in the diagram provided. Different portions are labeled. Which portion has the longest wavelengths?
Answer: C is the answer
Explanation:
In the given diagram Portion C has the longest wavelengths.
What is the electromagnetic spectrum?The electromagnetic spectrum is the range of all types of electromagnetic radiation. Electromagnetic radiation is a form of energy that travels through space in the form of waves. This energy is produced by the movement of electric and magnetic fields, and it includes a range of wavelengths and frequencies.
The electromagnetic spectrum includes a wide variety of types of electromagnetic radiation, ranging from low-energy radio waves to high-energy gamma rays.
The different regions of the electromagnetic spectrum include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
Each region of the electromagnetic spectrum has its own unique properties, such as its wavelength, frequency, and energy.
For example, radio waves have long wavelengths, low frequencies, and low energies, while gamma rays have short wavelengths, high frequencies, and high energies. The different types of electromagnetic radiation have different applications in areas such as communication, medicine, and astronomy.
Therefore, The correct option is portion C having the longest wavelengths.
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which one of these that doesn't belong with each other Lithosphere, Plates, Convection Crust
In pea plants, the allele for round peas, R, is dominant over the allele for wrinkled peas, r. What is the phenotype of a pea plant with genotype Rr? **Make a punnet square for help**
A) Wrinkled
B) Slightly wrinkled
C) Some round and some wrinkled
D) Round
Answer: D) Round
Explanation:
Phenotype is what the plant looks like, so with a genotype of Rr, the plant would be round. R (round) is dominant over r (wrinkled). The plant is heterozygous round.
You can't do a Punnett square because you don't know the genotypes of the parent plants.
Image of page linked
What is the number of daylight hours of daylight difference in the summer for two regions located at different latitudes in the northern hemisphere?
A red blood cell has a diameter of approximately 8 micrometers, or 0.008 um.
A model represents its diameter as 8 um. What is the ratio of model size to
actual size?
O A. 1:1,000
B. 1:100
O C. 100:1
OD. 1,000:1
thank youuuuu
A red blood cell has a diameter of approximately 8 micrometers, or 0.008 um. if a model represents its diameter as 8 um.
The ratio of the model size to the actual size would be
What is a unit of measurement?
A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.
As given in the problem a red blood cell has a diameter of approximately 8 micrometers, or 0.008 um. if a model represents its diameter as 8 um.
Size of the model /actual size = 8 /.008
=1000: 1
Thus, the correct answer is option D.
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What is it called when wavelengths spread out by passing through an object such as a prism?
A)dispersion
B)refraction
C)reflection
D)absorption
can someone help me please :)
Answer:
water chichet and flea
Explanation:
i dont know how to spell sorry
divided by the resistance is known as _____.
a. Einstein's equation
b. Faraday's law
c. Newton's law
d. Ohm's lawaces that are not moving past each other.
Answer:
Ohm's lawaces that are not moving past each other.
Explanation:
I think...
Let Me Know If It's In fact Correct
PLS ASAP Summarize the two stages of cellular respiration. Be sure to explain where in the cell each stage occurs.
Answer:
⚫---------Hello---------⚫
Your answer should be:
The first stage of cellular respiration occurs in the cytoplasm. This is where glucose is broken down into smaller molecules. A small amount of energy is also released. The second stage occurs in the mitochondrion. This is where the small molecules combine with oxygen to produce water, carbon dioxide, and a large amount of energy.
Explanation:
I hope this answered your question
Feel free to tell me if it didn't.
I would highly appreciate a brainliest!
Have a wonderful day!
Answer:
Sample Response: The first stage of cellular respiration occurs in the cytoplasm. This is where glucose is broken down into smaller molecules. A small amount of energy is also released. The second stage occurs in the mitochondrion. This is where the small molecules combine with oxygen to produce water, carbon dioxide, and a large amount of energy.
Explanation:
edge 2022 TnT
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
Match the correct sentence together.
Questions:
10 pounds 20 feet =
37 pounds 10 feet =
29 newtons 10 meters =
30 newtons 2 meters =
Answers:
200 foot-pounds
60 newton-meters
290 newton-meters
20 foot-pounds
370 foot-pounds
how many chickens would it take to ki ll an elaphant
??????????????????????????????????????????????????????????????????????????
Answer:
2207
Explanation:
A male elephant is about 6000kg, while the roosters of the golden comet chicken average on about 2,72kg. So if we divide 6000 by 2,72 we get about 2206 roosters for a draw. By this logic it would take 2207 chicken to kill an elephant
Your science teacher has provided the following materials to investigate the factors that affect the strength of electric and magnetic forces.
• large iron nail – 5 mm diameter
• 100 cm of thinly wrapped copper wire
• D battery
• electrical tape
• wire strip
• thumb tacks -assorted sizes
• paperclips – assorted sizes
Design an investigation you could carry out to determine the factors that affect the strength of electrical and magnetic forces.
The strength of the electric field can be estimated as force per electric charge, whereas the strength of a magnetic field depends on the force of electrons and velocity.
Whta is a magnetic field?A magnetic field can be defined as magnetic work exerted on electric charges that are in motion (movement).
Conversely, an electric field is an area where an electric current is applied and electron force can be estimated per Volts per Meter.
In conclusion, the strength of the electric field can be estimated as force per electric charge, whereas the strength of a magnetic field depends on the force of electrons and velocity.
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25 POINTS! Q1) A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?
Q2) A skateboarder starts at the top of a halfpipe ramp, skates through the middle, and up the other side. Match the following to describe what is happening at each of the three points in the skater's movement.
Middle
End
Beginning
1.
Maximum kinetic energy
2.
Potential and kinetic energy is equal
3.
Maximum potential energy