John counted 20 heartbeats in ten seconds. What is his heart rate?
A.
120 bpm
B.
140 bpm
C.
160 bpm
D.
180 bpm

Answers

Answer 1

Answer: a. 120 bpm

Explanation:

Answer 2

John's heart rate is 120 bpm and the right option is A. 120 bpm.

What is heart rate?

Heart rate is the rate at which the heartbeat per minute.

To calculate the heart rate, we use the formula below.

Formula:

H' = Hb/t........... Equation 1

Where:

Hb= HeartbeatsH' = Heart ratet = Time

From the question,

Given:

H' = 20 heartbeatst = 10 seconds = 10/60 = 1/6 miniutes

Substitute these values into equation 1

Hb = 20/(1/6)Hb = (20×6)Hb = 120 bpm

Hence, John's heart rate is 120 bpm and the right option is A. 120 bpm.

Learn more about heart rate here: https://brainly.com/question/723406

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Related Questions

Hi! So, I'm struggling with a lot of feelings right now and I really need help I'm going to a therapist soon and I'm really scared but I just need to know what's going on. So I have been crying a lot more and It's about my school work and parents. Sometimes I just feel like dying and I seem sad all the time. I never want to get out of bed but never wanna go to sleep. Does this mean anything I'm also having really bad thoughts..

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I’m not sure it could mean your depressed or something but it’s good to see a doctor.

Answer:

this is called hormones. we all have them. you just have to eat a lot of junk food, binge your favorite shows, and blow off school for a little bit so you can focus on you.

Explanation:

just kidding. this is normal though. If you're having like... suicidal thoughts, just remember that your death will affect more than just you. and as for school, just make a group chat with your friends and classmates to pass around answers, thats what i've done since like 5th grade. And with your parents, i'd say just spend as much time out with friends or in your room doing whatever to send across the message that what they're doing isn't helping anything, or tell them yourself, thats what i did

What are examples of how drugs can be bad for your health?

Answers

drugs can be bad for your health because they greatly affect how your system and brain function depending kn the drug itself along with the person taking it and their surroundings. Some examples are, increases in illness such as anxiety, depression, and psychosis. Once a drug is in your bloodstream it circulates through your body, being distributed to different organs and the brain. The drug affects chemicals and receptors within the brain, causing different effects depending on the type of drug. Withdrawal effects can sometimes be what takes the greater toll on the body, causing things such as insomnia, nausea, and loss of appetite. Taking to much of a drug will result in an overdose and in most cases, cause death.
Drugs can affect everything in your life. It can affect the money you spend, your bodily function, and relationships you have with others. Addictive drugs impact your money income because most addicts spend money on drugs just to get through the week. Relationships can be ruined because of your actions, language, and others while using. Drugs can ruin your system in many ways. A major organ that is affected the most while using drugs is the brain.

what are the four main types of resistance forces?

Answers

Answer:

The four main resistance forces are objects with mass, inertia, and momentum; friction; gravity; and air resistance.

Explanation:

tension force, air resistance, gravity and friction

Can someone pls define these disorders? peas and carrots (please and ty)

Answers

mental illness: health conditions which can change emotions, behavior or thinking. it can also be a combination of them

phobia: an irrational fear of something

self image: what you think of yourself (mental picture of yourself)

self esteem: confidence in ones worth or abilities

optimism: confidence/ hopefulness about the future or the good outcome of something

empathy: the ability to understand another person

Answer:

(simile)Getting along very well; being compatible

Explanation:

The Scale of Perceived Exertion is also known ___________.
A.
SPE
B.
Borg's Scale
C.
Talk Test
D.
MET

Answers

SPE
Explanation: The first letter of each word simplifies to the abbreviation SPE
spe=Scale of Perceived Exertion

How do you know if your guinea pigs are fighting? How do I separate them? And will they bite me?

Answers

Answer:

Why are my Guinea Pigs fighting?

Guinea Pigs are social animals and are usually happy living with other cavies, however, bust ups do happen.

It’s not recommended to house two male pigs and a female together as this can cause the males to become aggressive.

Make sure your pets are properly sexed before you take them home so that you know you have a group that won’t cause problems and you don’t accidentally end up with a pregnant female.

Even without a female, two males living together can end up fighting. When they move into a new home they’re likely to try to assert their dominance over each other. This can seem aggressive but might not be a full-blown fight and it can be a necessary process.

Your Guinea Pigs may circle each other, shake and bare their teeth. If one backs down that should be the end of the process. But it can get more physical if they lunge at each other and carry out non-sexual mounting.

If this happens, keep a close eye on them. Again, one may give in and the fight for dominance will end but if no one gives in it can escalate to biting and you’ll have a dangerous situation on your hands.

Bites can draw blood and cause serious injuries. If they’re biting you’ll need to separate them.

If the Pigs have been living with each other for a while and are unlikely to be fighting for dominance it may because they are unhappy or in pain.

It can be difficult to identify what is causing the problem but check your pet for any obvious sign of illness or injury, make sure the cage is clean and they have enough food, space and things to play with.

One Guinea Pig might have just got too grumpy and lashed out. You will need to separate them for a day and reintroduce them to see if it happens again.

What to do if your Guinea Pigs are fighting

First, identify if it is a proper fight or if they’re asserting dominance.

If they are fighting you’ll need to separate them. Read the next section below to learn how to do it safely.

Once they’re separated it can be a good idea to keep them in separate rooms for a night. Make sure neither is injured from the fight and that they’re generally healthy.

Check the cage is big enough, clean and has objects they can interact with, and be sure they’re eating and drinking normally.

After a night apart, you can try to reintroduce them. They might circle each other but if everything has blown over they may be fine to live together again, however, you’ll need to keep an eye on them for a few days after the fight.

If they do start fighting again you should separate them and it may be worth taking the aggressor to the vet. There is a chance your Pigs might not be able to live in the same cage.

How to stop a Guinea Pig fight

When Guinea Pigs are fighting it’s easy for an owner to get caught in the crossfire and end up with a nasty bite. Before you attempt to break up a fight make sure you have thick gloves or a towel to protect your hands.

If you feel you can grab the aggressor, try to get to it quickly before it harms the other Pig. You may be able to put something between them, such as cardboard, to break up the fight but they can be difficult to separate.

Once you have hold of one of them, follow the steps above and separate them so they’re different rooms and can’t see or hear each other.

Can you put male Guinea Pigs in the same cage?

Yes, as long the cage is big enough for two cavies. Guinea Pigs are social animals and housing them together can prevent loneliness.

When they first meet or move in together they may need to assert dominance. It’s rare that fights break out and even rarer that two male Pigs aren’t compatible but it does happen.

How do I stop my Guinea Pig from biting?

If your Guinea Pig is biting toys or objects in a cage, that’s not a problem. But bites to its cage-mates, you or other handlers are an issue.

Pigs can bite when they are scared, unhappy or in pain.

One of the best ways to avoid bites is to acclimatise your pet to its surroundings and being handled when it is young or first moves into your home.

Try putting your hand in its cage to let your Pig sniff it and climb on it. Once it is comfortable, pick it up and take it out of the cage.

Don’t hold it too far from the ground otherwise it will get scared.

Guinea Pigs can have sensitive areas that you’ll want to avoid putting pressure on while they’re being held. They may let you know with a little nibble.

Yes read above. Also you could get a book about them and their care

If you are anorexia, diabetic, and sick without a reason, what does that mean? PLZ answer as soon as possible!!!!!!!!!!!!!!!!!!!!!!!

Answers

Most of the time anorexic people are super self conscious so they starve themselves to become skinnier. Diabetes is an inherited disease that requires you to take pills and eat food so your blood sugars don’t get low. A lot of the time your sick because you were with someone who is sick. Hope that’s enough info!
anorexia is a eating disorder where you don’t eat what you should so it makes your sick and under weight. diabetic is when your body dosnt make enough insulin so you have to have a shot that gives you that everyday and sick without reason i have no idea what you meen

what is duration in physical activities

Answers

Answer:

Adults should do at least 2 hours and 30 minutes each week of aerobic physical activity at a moderate level OR 1 hour and 15 minutes each week of aerobic physical activity at a vigorous level. Being active 5 or more hours each week can provide even more health benefits.

Explanation:

Adults- 2 hr 30 min
Teens- 60min
Kids-60min
Brainliest?
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