How many meats do you eat a day?
Author:Institute of Physics of the Ch Time:2022.09.27
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The image of the superhero is generally like this: jumping, fighting, running fast, and shot from time to time. Of course, these behaviors need to consume energy like human activities -when you get up and walk around, you will consume energy, run a kilometer, or even consume more, although it is far from human flying (outsourcing). All human energy comes from food. What if the superhero is the same? How much do they need to eat to support their high -energy movement?
Here we use Hulk Hulk and his cousin female version of the Hulk as research objects. Assuming their energy sources are food. In the official video, Hulk told his sister that the Green Giants could drink how much alcohol wanted to drink, so this assumption was quite in line with the actual situation (.
Food energy
The energy of food is generally measured in Calory. For example, the packaging paper of the independent candy will probably write the energy of each candy to provide 200 cards. The energy of common food can be found online.
But the calories of nutritionists are different from physicists. In physics, 1 calorie is the energy value required for 1 gram of water ascending to 1 degree Celsius; Caliba, that is, 200,000 calories. (Note: In order to distinguish, "big card" is generally used to represent nutritional calories, 1 big card = 1000 calories, and use the "big card" expression later.)
It's easy to confuse. However, physicists do not actually use calories, but use Joule as an energy unit. The value of 1 scorched ear is equal to the energy required to exercise 1 meter with 1 meter. Picking up a book from the ground to the table will consume about 10 scorched ears, and the 1 card is about 4 184 Jiao Er.
However, using a large card to indicate that the energy unit does not seem to be intuitive. We might as well use the meat clip as the energy of a unit -a meat clip can provide about 380 calories, that is, about 1.59 million burnt ear. In the following article, using "meat clip can" as a unit that consumes energy for superhero skills, it must be quite interesting.
Energy that consumes nothing to do
Just alive, there will be a certain amount of energy consumption: breathing, blood circulation, and even blinking requires energy consumption. The energy consumed at this time is called "BMR", which is the abbreviation of basic metabolic rates. The basic metabolism of an adult is about 1500-2000 kcal, which is 4 to 5 meat crickets.
The value of the basic metabolic rate is affected by the age, weight, and height of people. Since the Hulk is not an ordinary human, the basic metabolic rate is not ordinary. We use their height and weight to roughly estimate.
Taking the Hulk Hulk as an example, according to his body type in the movie, his height is about 2.5 meters; because it is not so intuitive, it is estimated that weight is a bit difficult. Assuming that Hulk's density is similar to ordinary people, it is about 1,000 kg per cubic meter (similar to the density of water), then we estimate the quality by volume.
We use the volume of cylinders to approximate the volume of the human body. The height of this cylinder is L and the radius of R and the radius, so we can get human volume V.
If you do not change the shape to enlarge a body (increase the height L of the cylindrical body), then there must be a proportional relationship between the height L and the radius R, where A is a constant, so the volume can be written below to write the following volume. This looks:
But what about not ordinary? If the height becomes twice the same but maintains the same shape, then the volume will be eight times the original (that is,
For the Hulk, he is not only higher than ordinary people, but also more "wide", that is, it has a larger height-radius than A. Our rough assumptions A value is about 1.5 times that of ordinary people. If the density is consistent with ordinary humans, the 2.5 -meter -high Hulk will weigh 313 kg (626 catties).
The above conditions can be used to calculate the basic metabolic rate. Using some online computing websites can get Hulk's daily basic energy consumption to 4491 calories, which is about 11.8 meat clip capacity. It feels not amazing.
The female Hulk is also very high, but it looks similar to that of ordinary people. According to the comparison of her and Hulk, it can probably be estimated that her height is about 2.2 meters. Then her weight is about 213 kg (426 catties), and the basic metabolic rate is 8 meat crickets (3 056 card). The above is the calculation of their basic metabolic rate, but these energy can only satisfy the alive of the superhero and cannot support them to do any activities.
jump
The video has such a plot: Hulk pushed his cousin down the cliff. Female Hulk can jump back relatively easily, nothing wrong. How many meats do you need to consume this skill?
For all jumps, people's movements begin and end at a rate of 0, and the height is Δy. At this time, there is only one variable that needs to be considered, that is, changes in gravity potential energy. This volume represents the energy stored due to the gravitational effects of a mass (person) and the earth, and the following formula is calculated through the following formula:
In the expression, G is the amount of gravity field. The value on the earth is 9.8 Newton per kilogram. We have previously calculated the weight of the female Hulk, and we only need to estimate the height of her jumping from the bottom of the cliff. The cliffs in this scene are on the seaside, so I don't think it is too high, about 10 meters, so you can calculate the jump to consume 20 874 scorch ear energy, but it is 0.013 meat crickets. Although it is just one of the energy.
catapult
From the trailer, you can also see that the two can throw boulder. How much energy does this skill be?
In fact, this calculation process is very similar to jumping -only two different points. First of all, the quality of the person's weight is needed to the quality of the boulder; secondly, the boulder is not vertical, and the motion of the boulder has a horizontal speed. So even if the boulder is at the highest point of the trajectory, in addition to gravity potential energy, it has kinetic energy. We use the equal form below to calculate:
The maximum height of the calculation of the stone, I can only be estimated to be about 6 meters through the lens of the clip. Eventually, the level of computing levels at the horizontal distance (about 30 meters) and time (1.2 seconds) is 25 meters per second.
It can be concluded that the gravity energy of the boulder is about 80 000 000 scorch ear, and the horizontal kinetic energy is about 425,000 000 coke. The total energy of the addition of the stone requires 505,000 000 coke, which is 0.32 meat cricket energy. That is, you can throw the stones once you eat two mouthfuls.
In fact, you can feel that the Hulk is not just "throwing stones", it can be regarded as "launching stones" -when Hulk grabs a large stone with a diameter of about two meters and throws it out, this boulder is thrown out, this boulder, this boulder, Like meteors entering the atmosphere, the speed is too fast or even heated the surrounding air. In reality, such obvious thermal effects will only be observed on objects that exceed the speed of speed, about 343 meters per second. At this speed, Hulk needs to eat at least 1612 meat clips to complete the throw. Slap
One of the representative skills of Hulk is the palm of the hand. This skill is not like the team we are expressing or liked, or just the clap of social norms. This thunderic palm can basically be regarded as an explosion. Its power can use air or other things to hit the enemy. How much energy does it need when Hulk taught the cousin?
During their training, Nvkk once used such a palm to repel the distance from Hulk. Such a strong palm has some problems: the energy after the palm is strong as the light. What about the object? Or is it scattered to a large area to affect all nearby objects? I chose to analyze the latter.
Assuming that the energy erupted by a palm is spreading in semicircular diffusion, which means that all the objects in the 180 -degree vision of the female Hulk will be affected. When the shock wave expands outward, the range becomes larger.
We assume that the intensity of energy distribution is based on coke ear per meter, so as the distance R of the female Hulk increases, the strength value can be represented in the following formula:
Among them,
This value can be estimated by observing Hulk's impact. When he was impacted, he retreated about 4 meters within 0.5 seconds, which was the speed of his backward rate of 8 meters per second. Hulk's weight is 313 kg, which can calculate the change value of his kinetic energy to 10,000. But in fact, Hulk's kinetic energy is only a part of the role of the palm of the palm. The energy obtained by Hulk
If you estimate that
Based on the rough calculation above, we can estimate that the female Hulk needs to consume meat crickets every day. For the daily basis, her basic metabolic rate is 8 meat clips. If you contain your daily trivial behavior such as walking, up to the stairs, and speaking, you need to be close to 14 meat crickets. But what if she wants to launch skills? Obviously need more.
Assuming that in a fight, she threw three boulders, jumped five times, and beat twice. Suppose she can throw at supersonic speed like Hulk, but because she is still at the learning stage, she can only throw a megalith in diameter at half of the speed, so the energy reserves she needed every day is 833 million burnt. , About 52.2 meat clips. This amount is not a problem for the supply of snack bars, but eating 52 meat clips a day may be a bit greasy.
If some types are added to get the same energy, she needs to eat 198 bananas, or 794 carrots, 104 donuts, 87 cheese pizza, 24 butter or 1323 glasses of celery juice. Of course, I don't recommend that ordinary people eat so many things within a day.
Author: Rhett Allain
Translation: zhenni
Graduate: Tibetan idiot
Original link: How many peanut buttter Sandwiches do take to fuel ahulk?
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Translation content only represents the author's point of view
Does not represent the position of the Institute of Physics of the Chinese Academy of Sciences
Edit: Tibetan idiot
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