A bird is flying with through the air with a speed of 18.0 m/s. As it flies, it holds in its claws a 2 kg fish that it
just caught moments ago. Suddenly, the fish wiggles a bit the bird loses its grip, and the fish falls 5.4 m, landing
in the lake below. What speed does the fish have right before safely splashing back into the lake?
Answers
Related Questions
Light travels at a speed of 186,000 miles a second. The distance light travels in a year is:
58,656,950,000,000 miles/year
8,865,690,000,000 miles/year
6,789,000,000 miles/year
5,865,696,000,000 miles/year
Answers
Answer:
5,865,696,000,000
Explanation:
31,536,000 seconds in a year. 31,536,000×186,000=5,865,696,000,000
That is the answer!
Please help 20 points
only real answers or I WILL REPORT YOU
The three ways waves change direction are reflection, refraction, diffraction.
In 3-5 complete sentences, compare those three ways that waves change direction.
Answers
Refraction is When a light travels from air into water it slows down causing it to change direction slightly.
Diffraction Involves a change in direction of waves as they pass-through and opening.
Refraction is when a light travels from air into the water it slows down causing it to change direction slightly.
Diffraction involves a change in direction of waves as they pass through an opening.
Suppose you move the free end of a rope up and down to create a wave. The rope is the medium How does the wave move in relation to the rope particles?
Answers
Answer:
the molecules in the rope move/vibration, vibrating the molecules around it and this vibrations we hear as sound , if you have any questions you can ask me.
Carl is making a model to demonstrate the reason Earth has seasons. He has a round lamp to represent the Sun. He drew the continents on a table tennis ball to represent Earth.
• What are two ways Earth needs to move in Carl’s model?
• How can Carl demonstrate Earth’s position relative to the Sun when it is summer in Australia?
Answers
Answer:
Explanation:
Earth needs to rotate by itself to represent its self rotation which gives us day and night. It also needs to rotate around to sun to give seasons.
Rotate ball so area marked Australia is closest to the round lamp.
Answer:
Explanation:
Earth i.e. tennis ball needs to move in circle around the Sun i.e. lamp. that gives seasons on earth. it also needs to rotate on its axis that is not perpendicular to its circle track around the Sun. that gives day and nite.
Aus in summer means tennis ball marked as Aus facing Sun with the ball's axis at an angle so that the area is closer to the Sun.
This is a science question
Answers
The air currents across the continents would determine the distribution of the air.
What are air currents?Air currents across the continents are primarily driven by temperature differences and the rotation of the Earth. The warm air near the equator rises and flows towards the poles, while the cooler air near the poles sinks and flows towards the equator.
This creates large-scale circulation patterns known as Hadley cells, Ferrell cells, and Polar cells. These cells are responsible for the trade winds, westerlies, and easterlies, respectively. Additionally, there are also local winds caused by differences in terrain, such as sea breezes and valley breezes.
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help me pls i need the answer
Answers
How do we know there has not been an increase in the number of earthquakes? Officials from the U.S. Geological Survey, the government agency that keeps track of earthquakes, point to statistics. On average, there have been no more earthquakes so far in 2010 than there were in previous years.
What Happens During Earthquakes?
In reality, it's not the number of quakes that has gained our attention, but the devastating impact quakes can have. Earthquakes are very natural—it's inevitable that they'll happen because of the way the planet works. The earth's surface is made up of tectonic plates that fit together like puzzle pieces and are always moving past each other. When two of the plates' edges get caught, stress builds up at the fault line—the crack between the plates. When the plates are finally able to break free of each other, the stress is released, and an earthquake occurs. Earthquakes of varying strengths happen every day, usually at fault lines. Some of these quakes have a high magnitude, while others are relatively weak. But it's often where an earthquake takes place that determines whether it will be something that goes largely unnoticed, or a disaster that affects thousands of people.
What Is Changing?
In the past, earthquakes were not as much of a problem because Earth's population was smaller, and cities were less populated.
"Look at some of the big [earthquakes] recently," said Debarati Guha-Sapir of the World Health Organization. Guha-Sapir cited some earthquakes that took place in areas where the population had increased in recent years, making the quakes more serious. "Had the Izmit or Bhuj quakes [of 1999 and 2001] happened 30 years ago, the events would have been relatively insignificant, as the [populations] of these cities were a third of what [they were when the earthquakes happened]. Increasing population density makes a small event into a big one."
Some of the earthquakes that took place in early 2010 occurred in highly populated areas, as well. More people are moving into megacities that happen to be built on fault lines—and many cities are on fault lines. Of the 130 cities with more than one million people, more than half are in earthquake zones, making them more prone to earthquakes.
In many of these cities, officials have drawn up laws requiring that buildings be designed and constructed to endure earthquakes. But some cities, particularly those in developing countries, lack the resources to do this. There, people are rapidly putting up substandard buildings that can't withstand the force of the shaking earth. For example, the Haiti earthquake took place near the nation's crowded capital. There was a great deal of destruction because there were "too many people crammed into a city that wasn't meant to have that many people and have an earthquake," said University of Miami geologist Tim Dixon.
Another reason quakes seem worse is that we're paying more attention. Everyone noticed when the Haiti earthquake was quickly followed by the Chile earthquake. Many people watched the news and the Internet for updates on these disasters, unable to believe that they were seeing two major earthquakes in such a short period of time. But eventually, the earth will have a period when earthquakes are minor or in unpopulated areas. Then people won't notice quite so much anymore.
"People are paying attention to the violent planet we've always lived in," said Dennis Mileti, a seismic researcher. "Come back [at a time when] there have been no [noticeable] earthquakes, [and] most people will have forgotten [about them] again."
According to the article, what is one reason why it seems as if the world is experiencing more earthquakes than usual?
Answers
Answer: because there has not been one in years
Explanation: there was not on now 2023, 2022, 2021, 2020, and 2019
Answer:
The number of earthquakes has not increased because earthquakes didn't happen in the USA for a while.
Explanation:
Which of the following is NOT laboratory evidence of a chemical reaction?
A. Large chunks of sodium chloride are placed in a mortar and pestle. The sodium chloride is broken into smaller pieces.
B. Hydrochloric acid is poured in a test tube containing a piece of magnesium. Bubbles of gas form.
C. A solution of silver nitrate is added to a solution of sodium chloride. A solid white substance forms.
D. A solution of sodium sulfide is added to hydroiodic acid. A rotten smell is given off.
Answers
Answer:
A. Large chunks of sodium chloride are placed in a mortar and pestle. The sodium chloride is broken into smaller pieces.
Explanation:
This is an example of physical change where the physical properties of the substance are altered without any formation of a new substance. So, it is not an evidence of a chemical reaction.
What are the effects of radiation on different surfaces such as an ice- covered lake, a forest, an ocean, or an asphalt road?
Answers
Radiation can affect different surfaces in different ways depending on various factors. For instance, ionizing radiation can break apart water molecules in an ice-covered lake and damage plant cells in a forest, whereas non-ionizing radiation can support photosynthesis and growth. In the ocean, radiation can have both positive and negative effects, and exposure to high levels of ionizing radiation can cause damage to the asphalt of a road over time.
What is the effect of radiation?The effects of radiation on different surfaces can vary depending on a number of factors, including the type of radiation, the intensity of the radiation, and the properties of the surface material.
When radiation interacts with matter, it can cause a range of effects, including ionization, excitation, and heating. These effects can lead to changes in the physical and chemical properties of the material.
For example, when ionizing radiation (such as gamma rays or X-rays) interacts with water molecules in an ice-covered lake, it can break apart the water molecules and produce highly reactive free radicals. These free radicals can then go on to react with other molecules in the water, leading to changes in the chemical composition of the ice. The effects of radiation on a forest would depend on the type of radiation and the type of trees and plants present. High levels of ionizing radiation can damage or kill plant cells, leading to a reduction in growth and productivity. Non-ionizing radiation (such as visible light) can be used by plants for photosynthesis and growth.
In the case of an ocean, radiation can have a range of effects depending on the depth of the water and the type of radiation. For example, visible light can penetrate several hundred meters into the ocean, allowing photosynthetic organisms such as phytoplankton to thrive. On the other hand, ionizing radiation from radioactive materials can accumulate in the bodies of marine organisms, potentially leading to long-term health effects.
On the other hand, the effects of radiation on an asphalt road would depend on the type of radiation and the composition of the road. For example, exposure to high levels of ionizing radiation can lead to the breakdown of the chemical bonds in asphalt, potentially causing the road to become brittle and crack over time. Additionally, radiation exposure can lead to the formation of free radicals in the asphalt, which can react with oxygen in the air and cause the road surface to become discolored or faded.
Therefore, the effects of radiation on different surfaces can vary depending on a range of factors, including the type of radiation, the intensity of the radiation, and the properties of the surface material.
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please help need help hurry due in 30 minutes
Answers
Answer:
No, I don't agree with the friend.
Explanation:
I don't agree because the energy doesn't just "disappear it's converted to kinetic energy. due to the friction some of the energy in the system is converted to heat energy making it look like it "disappeared".
Energy can't be created nor destroyed so it definitely can't just disappear though it can be converted or transformed.
I hope that helped :)
hope this helped
How will the total energy change as the car moves from point A to B to C? Assume that none of the energy is lost as friction or heat energy.
A The total energy will increase as the kinetic changes to potential and back again.
B Kinetic energy will change into potential energy and back again, but the total energy will stay the same.
C The total energy will decrease because the potential energy will change into kinetic energy.
D The total energy will decrease since it is losing potential energy at point E.
Answers
Answer:c
Explanation: i am on study island and had that
Your friend Lisa comes to you saying, “I want to borrow $7,000 for a new car and the auto dealership came back to me with this offer. I don’t understand what this all means. And...why will I end up paying $8,119.78?” How would you respond to Lisa so that she understands the conditions of the loan offer?
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The total amount you'll end up paying is $8,119.78, which is more than the amount you're borrowing. This is because the interest on the loan adds up over time.
What are the conditions of the loan provider?They are offering you a loan of $7,000 with an interest rate of 6.5%. The loan term is 48 months, which means you have four years to repay the loan.
Based on these terms, your monthly payments will be $170.41.
However, the total amount you'll end up paying is $8,119.78, which is more than the amount you're borrowing. This is because the interest on the loan adds up over time.
To put it simply, the dealership is lending you $7,000, but they are also charging you 6.5% interest on the amount you borrow. This means that for every month you keep the loan, you'll pay some interest, which adds up over time. By the end of the 48-month loan term, you'll have paid back the $7,000 you borrowed, plus the additional $1,119.78 in interest.
So, before you decide to accept the loan offer, it's important to understand the total cost of the loan and whether the monthly payments fit into your budget. You may also want to shop around and compare loan offers from different lenders to find the best deal for you.
Therefore, you'll have paid back the $7,000 you borrowed, plus the additional $1,119.78 in interest. which is greater than the borrowed.
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Which types of electromagnetic waves are most likely to cause atoms and
molecules in the human body to ionize?
A. Infrared and radio
B. X-rays and gamma rays
C. Ultraviolet and infrared
D. Gamma rays and microwaves
Plz help fast
Answers
Answer: Its B
Explanation:
Answer:
B
Explanation:
I hope this question is now on the correct level. I don’t understand the chart, 14, and 16.
Answers
16: The farther north/south the city is the more direct/non-direct sunlight it receives.
Explanation:
Since LA is in the northern hemisphere, in June it would experience summer therefore, it must be June when the measurement was taken.
(brainliest please i need one more to rank up)
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:
PLEASE HELPP, pleaseee trying to get a good grade
Answers
Answer:
The total time she took to complete the race decrease because she stopped
Answer:
a and c if its multiple choice
Explanation:
give me brainiest
Where is the location of an earthquake's epicenter?
Answers
Explanation:
The center of the circle will be the location of your seismograph the epicenter of the earthquake is somewhere on the edge of that circle
What is a major drawback of nuclear energy? (1 point)
Answers
Answer:
Nuclear waste
Explanation:
It is extremely radioactive and can remain radioactive for hundreds of years.
Nuclear disasters are also very important and one of the major downsides of nuclear energy. Take Chernobyl for an example, the radiation produced by nuclear energy can cause plants animals and humans to suffer from diseases, mutations, and malfunctions. They also cosmetically damage skin and the environment with chemicals.
Two solid marbles A and B with a mass of 3.00 kg and 6.50 kg respectively have an elastic collision in one dimension. Before collision solid marble A (3.00 kg) was at rest and the other solid marble (6.50 kg) had a speed of 3.50 m/s. Calculate the magnitudes of velocities of two solid marbles vA and vB after collision.
Answers
Answer:
va = 4.79 m/s
vb = 1.29 m/s
Explanation:
Momentum is conserved:
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(3.00) (0) + (6.50) (3.50) = (3.00) v₁ + (6.50) v₂
22.75 = 3v₁ + 6.5v₂
For an elastic collision, kinetic energy is conserved.
½ m₁u₁² + ½ m₂u₂² = ½ m₁v₁² + ½ m₂v₂²
m₁u₁² + m₂u₂² = m₁v₁² + m₂v₂²
(3.00) (0)² + (6.50) (3.50)² = (3.00) v₁² + (6.50) v₂²
79.625 = 3v₁² + 6.5v₂²
Two equations, two variables. Solve with substitution:
22.75 = 3v₁ + 6.5v₂
22.75 − 3v₁ = 6.5v₂
v₂ = (22.75 − 3v₁) / 6.5
79.625 = 3v₁² + 6.5v₂²
79.625 = 3v₁² + 6.5 ((22.75 − 3v₁) / 6.5)²
79.625 = 3v₁² + (22.75 − 3v₁)² / 6.5
517.5625 = 19.5v₁² + (22.75 − 3v₁)²
517.5625 = 19.5v₁² + 517.5625 − 136.5v₁ + 9v₁²
0 = 28.5v₁² − 136.5v₁
0 = v₁ (28.5v₁ − 136.5)
v₁ = 0 or 4.79
We know v₁ isn't 0, so v₁ = 4.79 m/s.
Solving for v₂:
v₂ = (22.75 − 3v₁) / 6.5
v₂ = 1.29 m/s
plss s ss s s s s s s s s
Answers
The half-life of sodium-24 is 15 minutes. What was the original mass of Na-24 if 5.0 g remains after 1 hour?
20 g
40g
80g
100g
Answers
40g remains after an hour.
answer
40g
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.
Answers
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!
Which of these is NOT a position in hockey?
a
Goalie
b
Wing
c
Defenseman
d
Shortstop
Answers
Answer:
shortstop
Explanation:
cause there are 5 positions ( i think)
Center, Wingers, Defensemen, Goalie, Forwards.
¯\_(ツ)_/¯
Answer:
d.shortstop
Explanation:
what are two ways erosion affects California land
Answers
Answer:
Two ways erosion affects California land are rising sea levels and soil erosion. Rising Sea Levels can cause homes to go under water and soil erosion can cause the ground to not be harvestable.
Explanation:
Erosions can have a huge effect on many things consisting in California.
Answer:
Water pollution and increased runoff
Explanation:
Erosion can cause soil infected with fertilisers, pesticides, ets. can travel to water bodies, causing that water to be polluted.
Erosion can send particles to block pores in the ground, "patching up" the ground, letting water stay on the ground instead of seeping underground, eventually leading to runoff.
brick has a mass of 100 G and a volume of 25 cm squared, if you chop the brick in half what is the density of one half of the brick?
Answers
Answer: Density is defined as mass divided by volume, therefore: 100g/25cm3 = 4 g/cm3.
Explanation:
Answer:
Density is defined as mass divided by volume, therefore: 100g/25cm3 = 4 g/cm3.
Plz help me fill out this table
Answers
Dean Potter is known for slacklinging across a 615 meter deep ravine in Yosemite National Park with no safety gear. If his mass is 67 kg, how much potential energy did he have?
Answers
Explanation:
the gravitational potential energy applies.
the formula :
PE = m×g×h
mass × gravitational acceleration × height
in our case
PE = 67 kg × 9.81 m/s² × 615 m = 404,221.05 J
The work input = _____.
F i ÷ d i
F o ÷ d o
F o × d o
F i × d i
Answers
The work input = Fi × di
How to solve for work input?To solve for work input, you need to know the force acting on an object and the distance it moves in the direction of the force. Work input is defined as the product of force and distance, given by the formula:
Work Input = Force × Distance × cosθ
Where θ is the angle between the force vector and the direction of motion. If the force is applied in the direction of motion, then θ = 0 and cosθ = 1, so the formula simplifies to:
Work Input = Force × Distance
For example, if you are pushing a box with a force of 50 newtons over a distance of 10 meters, the work input would be:
Work Input = 50 N × 10 m × cos(0°) = 500 Joules
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Answer: F i × d i
Explanation:
Choose all the answers that apply.
Stars:
usually seem bright if they are close to Earth
are terrestrial bodies
use their own matter to create nuclear reactions
generate their own energy
are classified primarily by temperature
Answers
Answer:
use their own matter to create nuclear reactions
generate their own energy
are classified primarily by temperature
usually seem bright if they are close to Earth
Explanation:
The answers that apply for the stars are 1,2,4 and 5. Stars usually seem bright if they are close to Earth.
What is a star?A star is a heavenly body made up of a brilliant spheroid of plasma held together by gravity. The Sun is the closest star to Earth.
Many additional stars may be seen with the normal eye at night, but due to their great distance from Earth, they appear as stationary points of light in the sky.
The answers that apply for the stars are as follows;
1. Usually seem bright if they are close to Earth.
2. Stars are terrestrial bodies.
4. They generate their own energy.
5. Stars are classified primarily by temperature.
The answers that apply for the stars are 1,2,4 and 5.
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What can you tell about the location of the Sun from this illustration of the Milky Way? A) It is outside of the Milky Way. B) It is near an outer arm of the Milky Way. C) It is on the right side of the Milky Way. D) It is within the Central Bulge of the Milky Way. Hint
Answers
Answer:
D) It is within the Central Bulge of the Milky Way.
Explanation: