Would a brick or feather fall faster? | Physics | Khan Academy

2024/05/1206:26:22 science 294259

Would a brick or feather fall faster? | Physics | Khan Academy - DayDayNews

Would a brick or feather fall faster? | Physics | Khan Academy - DayDayNews

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Wang Jianping: One article per day: "Theory of Perception." Part 9" (105) Why is a problem a problem? Why is there a problem? Existence has existed for hundreds of millions of years. Is there something wrong with existence? Logically speaking, there is definitely no problem. If t - DayDayNews

Wang Jianping: One article per day: "Theory of Perception." Part 9" (105) Why is a problem a problem? Why is there a problem? Existence has existed for hundreds of millions of years. Is there something wrong with existence? Logically speaking, there is definitely no problem. If t

A major turning point for mankind will occur: all problems will no longer be a problem

06/09 1687

Every spring and summer is the time when most young birds learn survival skills such as leaving the nest to fly and foraging for food. Due to rain, strong winds, physical strength and other reasons, many young birds will accidentally fall from the trees when learning to fly. . Wh - DayDayNews

Every spring and summer is the time when most young birds learn survival skills such as leaving the nest to fly and foraging for food. Due to rain, strong winds, physical strength and other reasons, many young birds will accidentally fall from the trees when learning to fly. . Wh

Don't pick up the birds on the roadside! Please let them go home on their own

06/10 1497

This article is original to the Translational Medicine Network. Please indicate the source when reprinting. Author: Lily Introduction: Fat cells can be divided into "white" and "brown" - white fat cells are responsible for storing fat, and their weight accounts for about 15%-20% - DayDayNews

This article is original to the Translational Medicine Network. Please indicate the source when reprinting. Author: Lily Introduction: Fat cells can be divided into "white" and "brown" - white fat cells are responsible for storing fat, and their weight accounts for about 15%-20%

"Nature" rekindles brown fat cells and eliminates excess fat

06/09 1715

Recently, researchers such as Broad Institute of MIT and Harvard David Liu published a review in Cell to introduce the research progress in this field. - DayDayNews

Recently, researchers such as Broad Institute of MIT and Harvard David Liu published a review in Cell to introduce the research progress in this field.

Cell | David Liu and others review the research progress of gene editing vectors

06/09 1876

It might be tempting to use a cup with a green “Plant-Based” label for a cup of coffee, or see that the plastic utensils in your takeout are “100% compostable.” Some comfort. So could a plastic made from plants rather than petroleum actually melt harmlessly in the environment? - DayDayNews

It might be tempting to use a cup with a green “Plant-Based” label for a cup of coffee, or see that the plastic utensils in your takeout are “100% compostable.” Some comfort. So could a plastic made from plants rather than petroleum actually melt harmlessly in the environment?

"Science" Have you ever used environmentally friendly plastics made from plants?

06/10 1657

We’ve seen blue skies on sunny days, black skies on rainy days, gray skies on cloudy days…but what about green skies? It seems that it is only possible in science fiction movies, or on some alien planet beyond the earth. Will there be green skies on the earth we live on? The worl - DayDayNews

We’ve seen blue skies on sunny days, black skies on rainy days, gray skies on cloudy days…but what about green skies? It seems that it is only possible in science fiction movies, or on some alien planet beyond the earth. Will there be green skies on the earth we live on? The worl

Is the green sky suddenly appearing in the United States an ominous sign?

06/09 1472

Have you ever thought about the possibility of regenerating those brain cells you sacrificed in college? Medicine is being rewritten and we may be able to repair our brains, and it's something anyone can do. - DayDayNews

Have you ever thought about the possibility of regenerating those brain cells you sacrificed in college? Medicine is being rewritten and we may be able to repair our brains, and it's something anyone can do.

Can the brain regenerate? 5 ways and habits to reverse brain aging

06/09 1890

The spring itself is elastic. After being compressed, the spring will have the tendency to return to its initial state, and therefore has elastic potential energy. We can think of it as the energy stored in the overall system of the spring. So the question is Question: If a compr - DayDayNews

The spring itself is elastic. After being compressed, the spring will have the tendency to return to its initial state, and therefore has elastic potential energy. We can think of it as the energy stored in the overall system of the spring. So the question is Question: If a compr

Put a compressed spring into strong acid. After the spring dissolves, where does the energy of the spring go?

06/09 1513

When it comes to invasive alien species, the first thing that comes to everyone's mind is that they have no natural enemies and reproduce wildly, seriously threatening the local ecological balance. Since the spring of 2022, a large number of invasive alien species have appeared i - DayDayNews

When it comes to invasive alien species, the first thing that comes to everyone's mind is that they have no natural enemies and reproduce wildly, seriously threatening the local ecological balance. Since the spring of 2022, a large number of invasive alien species have appeared i

A large number of white mud ants appear in Qingdao! A boat catches 200 kilograms a day, and not only are they inedible, but they also eat clams

06/09 1094

On July 6, the team of Professor Luan Sheng from the University of California, Berkeley, published a paper in Nature entitled. A receptor-channel trio conducts Ca. - DayDayNews

On July 6, the team of Professor Luan Sheng from the University of California, Berkeley, published a paper in Nature entitled. A receptor-channel trio conducts Ca.

Nature | Luan Sheng's team has made important breakthroughs in the fields of plant sexual reproduction and signal transduction

06/10 1171

Pictured above is Physarum polycephalum, a protist, specifically a slime mold. The term "slime mold" does not refer to a specific single group, but is a broad term referring to several types of eukaryotes that behave similarly. Regardless, they possess intelligence, although it l - DayDayNews

Pictured above is Physarum polycephalum, a protist, specifically a slime mold. The term "slime mold" does not refer to a specific single group, but is a broad term referring to several types of eukaryotes that behave similarly. Regardless, they possess intelligence, although it l

Intelligent slime mold

06/11 1668

01. Nostalgia is a spaceship heading to Mars. ——Douyou 02. Since childhood, I have been taking care of the stars of all generations alone. ——Bai Helin's "Loneliness" 03. The stars should laugh, the universe is a remote place anyway. ——Pasternak 04. All my desires and contemplatio - DayDayNews

01. Nostalgia is a spaceship heading to Mars. ——Douyou 02. Since childhood, I have been taking care of the stars of all generations alone. ——Bai Helin's "Loneliness" 03. The stars should laugh, the universe is a remote place anyway. ——Pasternak 04. All my desires and contemplatio

Golden sentence#星星——All my desires and contemplations are the slowly exhaled air currents of this universe.

06/11 1169

Today, an insight into the vision of a once young cosmic artist shows the dust continuum and molecular lines of carbon monoxide and water seen in the pair of SPT0311-58 galaxies. (Image source: ALMA (ESO/NAOJ/NRAO)/S. - DayDayNews

Today, an insight into the vision of a once young cosmic artist shows the dust continuum and molecular lines of carbon monoxide and water seen in the pair of SPT0311-58 galaxies. (Image source: ALMA (ESO/NAOJ/NRAO)/S.

Water was discovered in ancient galaxies, which surprised astronomers. What happened?

06/11 1154

Text/Picture Yangcheng Evening News all-media reporter Wen Cong has completed about 700 experimental projects, filling many gaps in my country's scientific research field... Next month, the China Spallation Neutron Source (CSNS) will have been in operation for four years. With th - DayDayNews

Text/Picture Yangcheng Evening News all-media reporter Wen Cong has completed about 700 experimental projects, filling many gaps in my country's scientific research field... Next month, the China Spallation Neutron Source (CSNS) will have been in operation for four years. With th

Filling in many scientific research gaps! The China Spallation Neutron Source will be in operation for four years丨The party flag is flying high at the grassroots level

06/11 1511

In fact, we are not unfamiliar with the term mycotoxins. They generally exist in grains. The detection of mycotoxins can be carried out on-site. When choosing instruments for testing, we must choose brands with good quality. - DayDayNews

In fact, we are not unfamiliar with the term mycotoxins. They generally exist in grains. The detection of mycotoxins can be carried out on-site. When choosing instruments for testing, we must choose brands with good quality.

Introduction to applicable industries of mycotoxin detectors

06/11 1040

How should we choose testing instruments? When choosing together, we should focus on the quality of the product. Speaking of instruments, online residual chlorine analyzers have a wide range of uses. They are not only very accurate in detecting residual chlorine content, but can - DayDayNews

How should we choose testing instruments? When choosing together, we should focus on the quality of the product. Speaking of instruments, online residual chlorine analyzers have a wide range of uses. They are not only very accurate in detecting residual chlorine content, but can

Instructions for using online residual chlorine analyzer

06/11 1125

On June 22, Bitcoin exceeded $10,000. The short-term leeks chose to wait and see, and Bitcoin continued to break through 11,000, 12,000, 13,000... - DayDayNews

On June 22, Bitcoin exceeded $10,000. The short-term leeks chose to wait and see, and Bitcoin continued to break through 11,000, 12,000, 13,000...

There are ten buckets of Bitcoin milk, eight buckets are won by the four countries, one bucket is given by Brother Chicken, and one bucket is shared by everyone in the currency circle.

06/16 1554

In Buddhist temples, the main hall is the main hall, which is also called the main hall. The Main Hall is the core building of the entire temple and is also the place where monks gather to practice morning and evening. - DayDayNews

In Buddhist temples, the main hall is the main hall, which is also called the main hall. The Main Hall is the core building of the entire temple and is also the place where monks gather to practice morning and evening.

What does the Mahavira Palace mean? Which three Buddhas are worshiped?

06/16 1913

The statue of Sakyamuni Buddha in the Mahavira Hall mainly has three postures: the first one is sitting in lotus position with the left hand placed horizontally on the left foot, which is called Dingyin, which means meditation; the right hand is straight and drooping. - DayDayNews

The statue of Sakyamuni Buddha in the Mahavira Hall mainly has three postures: the first one is sitting in lotus position with the left hand placed horizontally on the left foot, which is called Dingyin, which means meditation; the right hand is straight and drooping.

What does the word "Daxiong" in Daxiong Hall mean?

06/16 1521

After the end of the winter player transfer window last month, Arsenal was one of the teams that was "all out but not in", and one of the players who left was the striker the team is currently missing, former captain Auba. Meiyang and the club reached an agreement to use the rema - DayDayNews

After the end of the winter player transfer window last month, Arsenal was one of the teams that was "all out but not in", and one of the players who left was the striker the team is currently missing, former captain Auba. Meiyang and the club reached an agreement to use the rema

He wants to wear number 14! Arsenal transforms Martinelli into a forward, hoping to inherit the king of Highbury

06/16 1379

However, their learning experience and learning methods can be used for reference and learning. I hope students will read this article carefully and find the learning methods and methods that suit them. - DayDayNews

However, their learning experience and learning methods can be used for reference and learning. I hope students will read this article carefully and find the learning methods and methods that suit them.

How do students who are among the top 100 students in the province in college entrance examination scores study? I was so inspired after reading this!

06/16 1084

Audiences who like to watch "Doraemon" may have had this question. In the story, Fat Tiger, as the child king of this area, is a figure who is feared by Nobita and others. Everyone is afraid of him and is afraid of getting fat. Tiger's fight. - DayDayNews

Audiences who like to watch "Doraemon" may have had this question. In the story, Fat Tiger, as the child king of this area, is a figure who is feared by Nobita and others. Everyone is afraid of him and is afraid of getting fat. Tiger's fight.

One of the unsolved mysteries of "Doraemon": Why is Doraemon afraid of the fat tiger?

06/16 1064