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A helicopter hovers 200. 0 meters over the ground and releases a relief packet. How much time does it take for the food packet to reach the ground?

Answers

Answer 1
Answer:

This solution assumes that there are no air resistance and no wind and thus no drag to the object itself

Based on the information given:

  • inital height = 200
  • final height = 0 or groundlevel
  • no intial velocity
  • acceleration: -g or 9.8m/s^2  (gravitional acceleration)

With that information at hand, we use the physics equation:

      x = x_(intial-height) +v_(intial-velocity)+(1)/(2)at^2

  • a: acceleration
  • t: time taken for the fall
  • x: (with no subscript) is the final height

Now let's plug in all the known variables and solve.

     .0 = 200-(1)/(2)*9.8t^2\n (1)/(2)*9.8t^2 = 200\n4.9t^2 = 200\nt = 6.389s

Thus it takes the food packet approximately 6.389 seconds to hit the ground.

Hope that helps!

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_________ of the population of the United States is obese. A. 10% B. 25% C. 33% D. 50% Please select the best answer from the choices provided. A B C D

Answers

33% of the population of the United States is obese. Thus the correct answer is C.

What is the population?

The term population refers to the number of people living in a country or particular location. Generally, the population will be calculated on living organisms living in the area. For an example, the population of the United, states is 329.5 million as of 2020.

Situation of obesity refers to excessively fat present in the body which can cause risks to life and danger to well-being. The most cause of obesity is sedentary or inactive lifestyle of an individual.

According to the evidence more than one-third people of in America is under the category of obesity which decreases the average health of an Adult in the country leads to chronic diseases and disturbs the health of the country.

Therefore, option C 33% is appropriate.

Learn more about the population, here:

brainly.com/question/27991860

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The best answer is C, 33%. Normally I would explain why, but luckily for you this is just a simple fact question. I did some research myself and it turns out men in the United States are 32.2% fat, and the woman are 35.5%.

Hopefully my answer is useful to you. Please mark brainliest if useful to you. You can do it!

Which of the following statements is true of negative eugenics? A. It discourages reproduction by those considered genetically inferior.
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C. It classifies births according to gender.
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A. Hope this helps you

WHY DO CATS PURR ASAP I WILL MARK BRAINLIEST IF YOU DO TEN SENTENCES


50 POINTS

Answers

Answer:

Purring is a kind of defence mechanism, and a way for your cat to remain calm when they're stressed . Just as your cat's purring can make you feel calmer, it helps to soothe them too. That's why a lot of cats purr on the vet's table - even when they aren't happy. Purring is more than just a method of non-verbal communication.

Explanation:

Answer:

Although we assume that a cat's purr is an expression of pleasure or is a means of communication with its young, perhaps the reasons for purring can be deciphered from the more stressful moments in a cat's life. Cats often purr while under duress, such as during a visit to the veterinarian or when recovering from injury. Thus, not all purring cats appear to be content or pleased with their current circumstances. This riddle has lead researchers to investigate how cats purr, which is also still under debate.   Scientists have demonstrated that cats produce the purr through intermittent signaling of the laryngeal and diaphragmatic muscles. Cats purr during both inhalation and exhalation with a consistent pattern and frequency between 25 and 150 Hertz. Various investigators have shown that sound frequencies in this range can improve bone density and promote healing. Cats have adapted to conserve energy via long periods of rest and sleep, it is possible that purring is a low energy mechanism that stimulates muscles and bones without a lot of energy. Perhaps cats' purring helps alleviate the dysplasia or osteoporotic conditions that are more common in their canid cousins. Although it is tempting to state that cats purr because they are happy, it is more plausible that cat purring is a means of communication and a potential source of self-healing.

Short answer: Cats purr as a way to calm themselves, to communicate, self-heal.

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Answers

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Answers

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