PLS help me with this its due soon!!
Devon ran a race on a flat track. He did not keep a constant speed during the race. The diagram below shows how fast he was running at different points on the track.
At which point on the track did Devon have the most energy of motion?
Answers
Answer: he ran with the most energy from the first to the second point…(2.1 m/s - 4.5 m/s)
Explanation:
Related Questions
Metals are malleable which means they can ______________ break easily conduct electricity be melted into a liquid form be hammered or pressed permanently out of shape without breaking or cracking
Answers
Answer:
melt?
Explanation:
shhh
Answer:
can be formed into other shapes, such as thin sheets or foils
Explanation:
Suppose a 4,000-kg elephant is hoisted 20 m above Earth’s surface. What will the elephant’s gravitational potential energy be? (Show your work in the space below.)
Answers
Answer: 784000 J or 784 KJ
Explanation:
U = m * g * h
U = 4000 * 9.8 * 20
U = 784000 J
Hope this was helpful:D
Write a report on waves. Some questions you might consider are: What makes a wave? Why are some waves small and some large? How are waves classified? Are there different kinds of waves? What happens when a wave meets the shore? Where in the world do you find the best waves for surfing?
Answers
Answer:
The waves have energy that wave back and forth because the waves are never still, they are always moving. There are different types of waves because sometimes (like a tsunami) the waves are affected by other things like the earth plates. Portugal is one of the best places to surf because they have waves that can reach up to 6 to 15 feet high!
Explanation:
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
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.
hen catching a football, your fingers should shape a
a W
b M
c Triangle
d Open circle
PLEASE ANSWER ASAP
Answers
Answer:
c.triangle
Explanation:
this is because I played football in be and the teacher told up it should be a triangle
When an external object’s frequency matches that of an adjacent object’s natural frequency, (blank) may occur.
Answers
Answer; Resonance is an increase in amplitude of a vibration that occurs when external vibrations match an object's natural frequency. The Tacoma Narrows Bridge may have collapsed because of resonance.
Explanation:
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
Answers
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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What do you think would happen to the boiling point of water if you were to cook pasta near the Dead Sea in Israel, which is 1,296 feet below sea level? Would it take a longer or shorter time than cooking the spaghetti in London, England, which is at sea level? Does the pot of boiling water in Israel contain more or less heat than the pot in London?
Answers
Answer:
I think it will be the same.
write a short reflection about a time where you've seen waves (can be water waves at the ocean or in a bathtub or strings /ropes, ect( and describe what you remember about the amplitude, frequency, and wavelength of these waves and how they might have changed. Use those terms in your story and describe what they mean.
Answers
Answer:
On my summer vacation, we went to the beach and we went out into the ocean the height of the wave or the amplitude they would vary. The wait or frequency between two waves was sometimes short or long but the waves had a short delay between them or wavelength
During my summer vacation, we visited the beach and ventured into the water, where the wave height or amplitude might change. Sometimes there was a little delay or a large delay between two waves, but the waves had a smaller wavelength between them.
What is wavelength?
Wavelength is the separation between the matching points of two successive waves. When two points or particles are described to be "corresponding points," it means that they are both in the same phase and have completed the same portions of their periodic motion.
Wavelength is often determined from peak to crest or from depression to trough in wave motion (waves with points oscillating at right angles to their advance direction); from compression to compression either from rarefaction to rarefaction in longitudinal waves.
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1 sentence telling me the topic of the story. In your own words.
3 sentences you copy straight from the magazine with "quotation" marks around it. This sentence proves that the topic is what you stated in the first sentence.
1 sentence telling me the conclusion. In your own words.
3 sentences you copy straight from the magazine with "quotation" marks around it. This sentence proves that the conclusion is what you stated in the sentence above this one
The average woodpecker smashes its beak against a hard surface more than 10,000 times a day. Any human who jolted their head like this would likely end up with a concussion. This traumatic brain injury is caused by a blow to the skull. So why doesn’t the constant hammering turn woodpeckers’ brains into mush? For years, it was assumed that woodpeckers had some kind of cushioning in their heads to protect their brains during pecking. Many scientists suggested that spongy bone in the birds’ skulls absorbed and lessened the shock of each impact (see Myth Buster: Hard Headed). This idea was repeated in scientific articles, textbooks, and informative plaques at zoos. Even though the concept “is often presented like a clear-cut fact, there haven’t been any real tests to prove it,” says Sam Van Wassenbergh. He’s a biologist who studies biomechanics, or how living things move, at the University of Antwerp in Belgium.SHOCK ABSORBER: Van Wassenbergh uses a spring-loaded hammer to show why a shock-absorbing skull would make a woodpecker less efficient at pecking. When you think about it, says Van Wassenbergh, the shock-absorbing skull idea doesn’t make much sense. Woodpecker drills into the wood in search of insects to eat. When the bird’s head accelerates forward, the movement generates kinetic energy. This energy of motion is transferred to the tree when the bird slams its beak against the trunk. If a woodpecker’s skull had to cushion, it would absorb some of this energy and decrease the force of the peck. Why would a bird that survives by pecking evolve to do it less effectively? Van Wassenbergh and his team decided to see what was really going on. First, the researchers recorded videos of woodpeckers’ heads in motion. To capture this rapid movement, the scientists needed special high-speed cameras. Each peck lasts only a fraction of a second! Van Wassenbergh’s team recorded videos of six woodpeckers from three species and analyzed the footage. The researchers used a computer to track three points on each bird’s head: one on the skull and two on the beak. The scientists hypothesized that if the birds’ skulls had shock absorbers, the footage would show a “squishing” of the space between the skull and beak—like when a spring compresses. But that didn’t happen. Instead, the birds’ heads moved as one stiff unit, like a hammer. Next, the team wanted to demonstrate why this adaptation would be helpful to the birds. Using computer models, the scientists simulated woodpecker skulls with and without shock absorbers. Then the researchers compared the force of the pecks. “The pecking performance was greatly reduced in the skull with a shock absorber,” says Maja Mielke, a biologist who worked on the study. With shock absorbers, says Mielke, “the poor birds would need to pound even harder to reach the same results.” For a woodpecker, having a shock-absorbing skull would simply be a waste of energy. Science World originally published this diagram in our May 10, 2021, issue. It was based on scientists’ beliefs about woodpecker anatomy at the time. Here it is again—updated based on new research. MYTH: The skull is made of spongy bone that cushions and protects the brain from impactBUSTED! The skull is hard enough to protect the bird from injury, but it doesn’t cushion The eyes have a special membrane that protects them from flying splinters and wood dust.MYTH: Neck muscles are strong and stiff enough to absorb the shock of each peck BUSTED! Stiff neck muscles do not absorb shock—in fact, they help increase the force of each peck.MYTH: The tongue wraps completely around the outside of the skull, providing an additional level of cushioning, and can extend to probe for food inside holes made by the birdBUSTED! The tongue does not provide any observable cushioning. The beak is connected to the skull with thick bone that prevents jolts and vibrations. NEW RESEARCH SHOWS: The woodpecker’s brain is small, which helps prevent concussions that might occur in a larger animal. If woodpeckers’ skulls don’t absorb shock, then why doesn’t constant pecking damage the birds’ brains? To answer this question, the researchers calculated how harmful the blows from pecking actually are. It turns out the hits aren’t that dangerous because the birds’ brains are so small. “Small masses can tolerate stronger impact forces without being damaged,” says Mielke.
Answers
Answer:
The topic of the story is about how woodpeckers can peck without causing damage to their brains.
"The average woodpecker smashes its beak against a hard surface more than 10,000 times a day."
"This traumatic brain injury is caused by a blow to the skull."
"So why doesn’t the constant hammering turn woodpeckers’ brains into mush?"
The conclusion of the story is that woodpeckers don't get brain damage from pecking because their brains are small, which allows them to handle the force of the pecks.
"Small masses can tolerate stronger impact forces without being damaged,"
"The hits aren’t that dangerous because the birds’ brains are so small."
"To answer this question, the researchers calculated how harmful the blows from pecking actually are."
Explanation:
list both types of energy before skydiver jumps out of the plane and as the sky diver is diving.
Answers
Answer : This is an example of Kenitic and potential energy
Explanation:
kenitic: the act of moving or motion
potential: not. moving YET
he was not moving when he was on the plane and had potential energy cause he wasn't getting pulled down and kenitic energy was when he was getting pulled down from force of gravity when he was getting pulled to the ground when he was skydiving
Describe what the action and reaction relationship is all about in Newton’s Third Law
Answers
What is the independent variable and dependent variable in this question: Does the type of paper affect the distance a paper airplane flies?
Answers
Answer:
independent: type of paper
dependent: distance
Explanation:
the independent variable determines what will happen to the dependent varieble, just as the type of paper determines how far the plane will fly
le me know if you need help figuring out how to make something in little alchemy.
Answers
Answer:
ok
Explanation:
why might parents allow their kids to opt out of gym class?
a. They think kids should take other subjects in school.
b. They think exercise in school is important.
c. They want their kids to learn teamwork in school.
d. They don’t want to pay for school equipment.
Answers
I think its A
i like your username btw
Answer:
I thinks d because some parents don't want to pay all the fees
Black to move and capture a hanging piece . Select the best move
A) Nxg3
B) Bxg3
C) Qxg5
Answers
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.
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How does the height of the cliff impact the acceleration (velocity/time) of a cliff diver?
Answers
Answer:
Higher cliffs don't accelerate your fall acceleration is constant during free fall. The pull of gravity decreases infinitesimally at higher elevations, but it pulls you with an equal force from the first second of you jump off until you decelerate when you fall hit the water. hope this helped
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MERRY CHRISTMAS! HAPPY HANUKKAH ALL THAT
Answers
The velocity of the vehicle is equal to 406.5 m/s. The velocity in Km/hr is 1463.4 Km/hr.
What is the velocity?Velocity can be demonstrated as a vector measurement of the direction of the object and the rate of motion of an object. The velocity of an object can be described as the change in the body's position w.r.t. time.
Velocity can be expressed as a vector quantity as it consists of magnitude as well as direction. A mathematical formula common and simplest way to find velocity.
v = d / t
Where v is the velocity, d is the distance covered and t is the time taken by the body.
The S.I. unit for velocity can be represented as m/s and can be expressed in terms of miles per hour (mph), and kilometers per hour (kph).
Given, the distance traveled by the vehicle, d = 100 m
The time taken by vehicle = 0.246 sec
The velocity of the vehicle, v = 100/0.246 = 406.5 m/s
We know that 1km = 1000m then 1 m = 10⁻³ Km
1 hour = 60 ×60 = 3600 s
1s = 1/3600 hr
Therefore, velocity, \(\displaystyle v = 406.5 \times \frac{3600}{1000} Km/hr\)
v = 1463.4 Km/hr
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Velocity = Distance / Time = 100 m / 0.246 s = 406.50 m/s
To convert m/s to km/hr, we need to multiply the velocity by 3.6:
Velocity in km/hr = Velocity in m/s x 3.6 = 406.50 m/s x 3.6 = 1463.80 km/hr
The steps I took to convert from m/s to km/hr were to multiply the velocity in m/s by 3.6, which is the conversion factor between meters per second and kilometers per hour.
Please Help Me!!!!!!
Answers
Answer:
C: Electrical to chemical
the electricity turns into chemical energy to light the candle.
How are air temperature and air pressure related?
Low air temperature causes the air particles to be packed together, creating high air pressure.
Low air temperature causes the air particles to spread out, creating low air pressure.
High air temperature causes the air particles to rise, creating low air pressure.
High air temperature causes the air particles to stay close to the ground, creating high air pressure.
Answers
Answer:
You already answered yourself
Students have a small steel ball and a large steel ball, and they have a short ramp and a tall ramp.
The students want to find out if a ball's size affects how far it can roll. They also want to find out if the height of the ramp affects how far the ball can roll.
They do the following experiment: (second image)
The students finish conducting their tests and conclude that using a taller ramp and a larger ball will make the ball roll further. Is their conclusion based on a reliable experiment?
A.Yes, because they used the same color balls.
B.No. They did not do an additional test to compare the results using the short ramp.
C.No. The small ball should have been pushed with more force.
D.Yes, because they changed the height of the ramp.
Answers
Answer the larger ball will reach late.
Explanation:the smaller ball will reach before because it's density is low because of its small size and the small ball will reach before because it's lighter
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.
Answers
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.
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
Answers
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
Sorry, another question on this packet! What are my drawing supposed to look like on these questions?
Answers
Answer:
Draw an underwater maps of the things
Explanation:
Just follow the instructions and draw a picture that doesn't include water, life ect.
PLEASE HELP!!! I NEED TO FINISH RN AND I'M OVERLOADED WITH WORK!! WILL GIVE BRAINLIEST TO QUICKEST AND CORRECT ANSWER!! 12 POINTS!!!! SCIENCE! (couldn't find the science category)
summarize why the earth has different seasons. Include the words tilt, axis, direct and indirect sunlight, and revolution.
Answers
Answer:
Well Earth spins on its axis which moves around the sun and the Earth's spin on the axis which creates seasons, But also Direct and Indirect sunlight is the other reason for seasons!
Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping
Which of the statements relate to cell theory?
A. The sales is the basic unit of structure and all organisms.
B. Cells have similar functions
C. All cells come from other cells.
D. All non-living things are composed of cells
PLEASE HELP
Answers
NEED HELP FAST!
select drop box.
questions and options are in pictures.
Answers
Answer:
First is incrcersing mangnetic field second photosphere
Explanation:
sorry if the first one is wrong
Genes are organized on matching pairs of _______.
Answers
Answer:
homologous chromosomes
Explanation:
A mass of 80 g of KNO3 is dissolved in 100 g of water at 50 ºC. The solution is heated to 70ºC. How many more grams of potassium nitrate must be added to make the solution saturated? Explain your reasoning
Answers
50 g more potassium nitrate must be added to make the solution saturated at 70 °C.
Solubility:
It is the degree of dissolved substance at room temperature or 25 °C per \(\bold {g/100\ cm^3}\).
Saturation:
If no more solute or solid substance is dissolved in the solution, then the solution is called saturated.
Saturation increase with the increase in temperature because the kinetic energy of the particles is increased.
Therefore, 50 g more potassium nitrate must be added to make the solution saturated at 70 °C.
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