Your forehead can withstand a force of about 6.0 kn before fracturing, while your cheekbone can withstand only about 1.3 kn. suppose a 140 g baseball traveling at 30 m/s strikes your head and stops in 1.5 ms.

a. what is the magnitude of the force that stops the baseball?

b. what force does the baseball exert on your head? explain.

c. are you in danger of a fracture if the ball hits you in the fore- head? on the cheek?

Answers

Answer 1
The baseball of mass 140g travels at a speed of 30 m/s.
Its momentum is
P₁ = (140 x 10⁻³ kg)*(30 m/s) = 4.2 (kg-m)/s

Part a.
The momentum is dissipated in 1.5 s.
The average force, F, that dissipates the momentum is
(F N)*(1.5 x 10⁻³ s) = 4.2 (kg-m)/s
F = 2800 N = 2.8 kN

Answer: 2.8 kN

Part b.
The average force that the baseball exerts on the head is 2.8 kN, as obtained in part a.
This is true if the time to dissipate the momentum is 1.5 ms.

Answer: 2.8 kN

Part c.
Answer:
(a) The forehead will not fracture because 2.8 kN < 6.0 kN.
(b) Your cheek will fracture because 2.8 kN > 1.3 kN


Answer 2
a.) The 140g (0.14kg) ball decelerates from 30m/s to 0m/s in 0.015s. The acceleration is therefore 30m/s / 0.015s = 2,000m/s^2. Since force, is equal to mass times acceleration, the force is equal to 0.14kg * 2,000m/s^2, which is equal to 280N, or 0.28kN. b.) The baseball exerts 0.28kN of force on your head because the head is the only object applying force required to stop the ball. c.) You are not in danger of fracturing your skull because the force is less than 6.0kN. d.) You are not in danger of fracturing your cheekbone because the force is less than 1.3kN.

Related Questions

One factor that can increase sensitivity to sunlight is genetics.


Please select the best answer from the choices provided.

T
F

Answers

One factor that can increase sensitivity to sunlight (photosensitivity) is genetics, is TRUE! There is one gene in particular that is noted for causing photosensitivity is CHD2.

Most of the genes can be recessive and can be a cause for epilepsy; which is also sometimes triggered in those with photosensitivity.

Answer:

true

Explanation:

What is the connection between the liver organ uv radiation and sunlight and bone tissue?

Answers

The answer to this question would be: vitamin D

The UV is needed by the skin to make previtamin D3. Previtamin D3 or cholecalciferol made from the skin will be changed in the liver into 25- hydroxyvitamin D3 and then sent to the kidney to be changed into 1,25- dihydroxyvitamin D3. The last change in the kidney will active the vitamin D. Vitamin D has a role in the calcium absorption which was will strengthen the bone tissue.

Rita works as a medical coder for an ambulatory surgery center. Under the terms of HIPAA, is Rita considered a covered entity?

Answers

The answer is:  "Yes".
_________________________________________

Answer:

Yes.

Explanation:

Health Insurance Portability and Accountability Act (HIPAA) is a law that has been in place since 1996 and protects US citizens from problems that may occur related to health insurance coverage, in the event of entitlement, transfer of coverage, beneficiary unemployment. , standards for protecting confidential information, among other factors. Under this law, individuals who work with medical diagnostic coding, such as Rita, and those who work with medical record review are considered a covered entity.

which of the following play(s) a role in determining a persons weight?
A) heredity
B) activity level
C) BMI
D) Body composition
Thanks (:

Answers

D- body composition plays a role in determining a persons weight. Heredity doesn’t state how much someone weights. Activity level may help predict that someone’s overweight but doesn’t tell how much someone actually weights. BMI can't distinguish between fat and muscle, which tends to be heavier and can tip more toned individuals into overweight status, even if their fat levels are low.

body composition is used to describe the percentages of fat, bone, water and muscle in human bodies. Because muscular tissue takes up less space in our body than fat tissue, our body composition, as well as our weight, determines leanness.

Which gases are carried by red blood cells? Check all that apply.

oxygen

helium
carbon dioxide

nitrogen

hydrogen

Answers

Oxygen and carbon dioxide are the gases transported by the red blood cells. Oxygen is collected from the air in the alveoli to the blood capillaries. It binds to the heme group in the haemoglobin, which confers the red colour to the red blood cells where it is contained. Carbon dioxide moves the other way around, from capillaries to alveoli. They are transported by the red blood cells when oxygen is exchanged by carbon dioxide from the cells' metabolism. 

The gases carried by red blood cells are oxygen and carbon dioxide. Option A and C

Which gases are carried by red blood cells?

Red blood cells transport oxygen and carbon dioxide. Oxygen sticks to hemoglobin and is carried to different body parts for cells to breathe, while carbon dioxide is mainly carried as bicarbonate ions and let out in the lungs.

Red blood cells do not carry helium, nitrogen, and hydrogen. Helium, nitrogen, and hydrogen are not usually transported by red blood cells. Helium and hydrogen are not important gases for carrying oxygen in the body. Nitrogen is a part of the air we breathe, but it doesn't do much in our bodies and doesn't help with breathing or transporting oxygen in our blood.

Hence, the gases carried by red blood cells are oxygen and carbon dioxide. Option A and C

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Prompt Develop an action plan to achieve a personal flexibility goal. How can you accomplish your goal? Describe the actions necessary to complete the goal, the frequency of any exercises you would need to do, and your weekly schedule for improving flexibility. Also describe how you would know that your goal had been met.

Answers

In achieving a personal flexibility goal, you should set your schedule according to your daily routine and manage your time well to accomplish your goals. The necessary actions needed to complete your goal is setting your daily routine where your flexibility exercise fit in your daily life. Flexibility exercise would likely be yoga, Zumba or aerobics in which you would feel the stretching of every part of your body where you wanted to keep and balance your everyday routine and schedule in accomplishing your personal flexibility goal. You would know that you have reached your goal or accomplish what you have set because your body will be more flexible, you feel that your fit and your living the healthy life as best as possible.

Stretching

Stretching is an important part of the exercise. When you stretch, you elongate your muscles, improving flexibility, thus giving your joints a broader range of comfortable motion. Flexibility is associated with greater muscle balance around the active joints, which leads to better posture. Stretching also reduces the risk of injury and muscle soreness by helping to transport blood and nutrients to muscles and cartilage. Before stretching, do three to five minutes of cardiovascular exercise to warm your muscles up. You should stretch your major muscle groups by doing one to three sets of 10–60 second stretches in each position. It is important to apply a bit of tension to your muscles while stretching but not so much that it’s painful.

Though stretching is usually a good thing, there are certain circumstances under which you should refrain from stretching. These include:

when muscles are strained or ligaments are sprained.

when muscles are inflamed, hurt, or infected.

after a fracture or when muscles or joints are experiencing sharp pains.

In sum, you should generally be stretching before doing intense workouts, but if you’re in pain or start hurting while you’re stretching, it’s important to stop.

What function do capillaries serve in the cardiovascular system?
A.
carry blood to the brain
B.
return blood to the lungs
C.
help control body temperature
D.
replace old blood cells

Answers

c, they control body temp through vasoconstriction (contract when cold) and vasodilation (widen when hot)

Capillaries are the smallest and most numerous blood vessels in the cardiovascular system. They play a crucial role in facilitating the exchange of oxygen, nutrients, and waste products between the blood and the surrounding tissues. However, their primary function in the context of the cardiovascular system is to help control body temperature. Thus, option C is correct.

Capillaries are located in close proximity to body tissues and are responsible for regulating heat exchange between the blood and the tissues. When body temperature rises, capillaries dilate, allowing increased blood flow to the skin and facilitating the release of excess heat through the process of vasodilation. This helps in cooling down the body and maintaining its temperature within a normal range.

Conversely, when body temperature drops, capillaries constrict, reducing blood flow to the skin and minimizing heat loss through the process of vasoconstriction. This helps in conserving heat and preventing the body from getting too cold.

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Which of the following government services doesn't encourage community safety?

Car seat installations
recycling
fire prevention programs
cultural festivals

Answers

cultural festivals doesn't encourage community safety.

Answer:

The answer is D

Explanation:

Match the diseases with the body systems they relate to.
Pneumonia, endometriosis, fibromyalgia, dermatitis

Muscular system>
Integumentary system>
Respiratory system>
Reproductive system (female)>

Answers

Muscular system:  fibromyalgia
Reproductive system (female): endometriosis
Resporatory system: Pneumonia
Integumentray system: dermatitis

The correct answers are:

Muscular system: Fibromyalgia

Fibromyalgia is a complicated condition made up of symptoms that affect the muscular as well as the central nervous system causing widespread chronic pain throughout the body.

Integumentary system: Dermatitis

Dermatitis which is also known as eczema, is an inflammation of the skin resulting in itchiness, red skin and rashes.

Respiratory system: Pneumonia

Pneumonia is a infection of the lung where the lung sacs fill with pus resulting in coughing and wheezing.

Reproductive system (female): Endometriosis

Endometriosis is when the tissue that lines the womb grows on other pelvic organs causing bleeding and pain.


A 10-year-old girl is scheduled for her yearly physical with her pediatrician. At the time of the visit, the patient complains of watery eyes, scratchy throat and stuffy nose for the past two days. The provider performs the physical. He also performs an expanded problem history and exam and treats the patient for a URI. What CPT® code(s) is/are reported for this visit?

Answers

CPT 99213, Under Established Patient Office or Other Outpatient Services. The Current Procedural Terminology (CPT) code 99213 as maintained by American Medical Association, is a medical procedural code under the range - Established Patient Office or Other Outpatient Services.99393, 99213-25
CPT 99393, Under Established Patient Preventive Medicine Services. The Current Procedural Terminology (CPT) code 99393 as maintained by American Medical Association, is a medical procedural code under the range - Established Patient Preventive Medicine Services.
Modifier 25 (significant, separately identifiable evaluation and management [E/M] service by the same physician on the same day of the procedure or other service) is the most important modifier for pediatricians in Current Procedural Terminology (CPT®).

Red blood cells _____.

1) are made mostly of water
2) carry oxygen
3) fight disease
4) are only found in arteries

Answers

1) are made mostly of water

not 2, because it also carries carbon dioxide out of the body, 
not 3, because white blood cells fight diseases
not 4, because it can also be found in veins and capillaries

hope this helps

Wear shoes with a ______________________on the sole to prevent slipping on ladder rungs or steps.



A.Closed back and sufficient tread

B.Open back and sufficient tread

C.Closed back and sufficient sole

D.Open back and sufficient sole

Answers

the answer is C.Closed back and sufficient sole

The right answer is Closed back and sufficient sole.

It is important to follow the three-point rule when climbing or descending a ladder or stepladder, ie two hands and one foot or one hand and two feet must be in contact. with the equipment.

To comply with this rule, the user must not carry tools in his hands. He can hang them on his belt, use a rope or hoist to drop them at the desired place or ask for help to transport too bulky materials.

In order to ensure the stability of the equipment and the safety of the worker, the body must remain between the uprights. A person's center of gravity is about the center of the body, at the height of the waist. Do not try to reach a point too far by stretching the arm, the risk of losing the balance is too high, rather move the ladder or stepladder.

Furthermore :

* wear protective footwear with sole and heel made of non-slip material and be clean, free of mud or snow, to prevent slipping;

* Always face the ladder or stepladder to get on or off only one person at a time can get on or off the equipment.

* Never mount more than one, even if the total weight does not exceed the maximum capacity allowed;

* avoid overloading the ladder or stepladder. Check the maximum allowable load indicated on the manufacturer's label

use a ladder of sufficient length to work without having to stand on the last two rungs

* never use a horizontal ladder to replace a ramp or as a means of access;

Write advice to a friend on how to determine whether his sister is showing signs of alcohol abuse. Describe what to do if your friend thins his sister does have a problem.

Answers

if you sense that a friend is showing signs, id suggest asking the friend small questions, not BIG OBVIOUS ONES, that will eventually lead up to your answer, OR you could do some investigating and talk to some of the friends close ones, asking them if they know anything. hope this helps! if you'd like i could help you further

Alcohol abuse is a general term for any level of risk, from increased drinking to alcohol dependence. Alcohol abuse can cause physical or mental health damage, even in the absence of addiction, so it is normal for your friend to be concerned that your sister may be living in alcohol abuse.

In this case, to find out if your friend's sister is living with alcohol abuse, the best thing to do is to see if she has:

Strong desire or compulsion to drink; Difficulties in controlling alcohol intake in relation to its onset, termination, or amount; Psychological change when alcohol use is stopped or reduced, or alcohol is used to relieve or prevent symptoms of psychological change. Evidence of tolerance as increasing doses to achieve the same effects as previous lower doses; Progressive loss of interest in previously performed activities or other sources of pleasure due to alcohol use; Continued use even with clear evidence of harmful consequences.

After noticing these factors, your friend should talk to his sister, ask her what's going on, present the dangers that alcohol brings to her life, and ask if she wants professional help to quit this addiction.

When selecting equipment, the most desirable characteristic is that the equipment . The most undesirable characteristic is that the equipment is

Answers

Final answer:

Selecting business equipment necessitates a balance between modern efficiency and avoiding rapid obsolescence. Desired characteristics include reliability, productivity, and resources that support evolvability and resilience, while undesirable traits involve clinging to outdated technology that hinders performance.

Explanation:

When selecting equipment for a business, it is essential to strike a balance between acquiring the very latest models and relying on outdated technology. The most desirable characteristic is that the equipment efficiently meets the current needs of the business, ensuring high productivity, efficiency, and reliability without necessitating frequent replacements. On the other hand, the most undesirable characteristic is that the equipment is obsolescent, hindering performance and potentially causing costly downtime.

The selection should be informed by the equipment's performance characteristics, including accuracy, precision, and selectivity, among others. Additionally, factors such as evolvability, which allows for future upgrades and adaptations, and the trade-off between upfront costs and long-term benefits should be considered. The goal is to ensure that any equipment acquired contributes positively to the resilience and competitiveness of the business while being cost-effective.

Please identify......

Answers

a)  Prefrontal cortex

b)  Hippocampus

c)  Cerebellum

Hope it's helpful and correct

If it is , don't forget to mark me as brainliest.

Which description best defines health? being physically fit, eating a good diet, and not having any major diseases being in the middle, rather than at either extreme, of the health continuum maintaining a balance of physical, mental/emotional, and social well-being eating well, having friends, liking yourself, and living for a long time N

Answers

The second answer seems to fit best though it defines good health rather than just health
it would be the second answer your right

Which statement BEST describes how muscles respond to weight training?

Answers

the correct answer is d

Answer:

D

Explanation:

100% on quiz

People who are lactose-intolerant

A. can never eat anything that's made with a dairy ingredient.
B. cannot handle the protein, fats, minerals, and vitamins in milk.
C. cannot break down the lactose found in milk.
D. are allergic to dairy.

Answers

The answer is c. they cant break down the lactose in milk


i think the best answer is c

The USAN stem for cholesterol-lowering agents is:

A.
–olol.

B.
–afil.

C.
–statin.

D.
–vir.

Answers

The correct answer is:  [C]:  –statin.
__________________________________________________

Answer:

C.–statin.

Explanation:

USAN is a US product naming system. These systems are intended to provide simple, unique and proprietary names that provide consumers with a logical and informative classification of the name of household products circulating in the country. For cholesterol lowering products USAN uses the designation "–statin."

the capacity of which energy system is most enhanced in response to a regular endurance training program a) phosphagen system b) aerobic glycolysis c) anaerobic glycolysis d) fatty acid oxidation

Answers

the answer is b aerobic glycolysis

The capacity of which energy system is most enhanced in response to a regular endurance training program is anaerobic glycolysis. Thus, option C is correct.

What is Glycolysis?

Glycolysis is a process by which glucose is converted to two molecules of pyruvate.

Glycolysis deals with the breakdown of glucose resulting in the formation of pyruvate,two molecules of ATP and  2 molecules of NADH.

Thus, option C is correct.

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As your muscles begin to warm up you need to be more cautious about performing flexibility exercises because your body can overboard, causing injury

A) true

B) false

Answers

True!
you can i hurt yourself if you don’t want up
That statement is true
You need to be careful because there is a chance that you will pull your muscle or joint if you too overboard in your stretching.
Some things to consider to prevent this are :
- Do not bounce when you stretch, because it could cause a tear in the tissue
- Stop as soon as you feel a sharp pain 

One of the benefits of regular exercise is that lowers your——heart rate
A.strained
B.active
C.cardio
D.resting

Answers

resting heart rate so D.

I believe it's D.resting.
One of the benefits of regular exercise is that lowers your resting heart rate.

(03.03 MC) You just saw a video ad that shows a man talking about the diet pill he uses. He doesn’t appear to be reading a script, and the words at the bottom of the screen tell you he is not an actor. What technique has the advertising company used to persuade you to use the diet pill?

- Bandwagon
- Plain folks
- Scientific evidence
- Glittering generalities

Answers

The technique seems to be plain folk because he "isn't pretending" and they want to make you feel like you can relate to them
it plain folks cuz i just did the quiz and got it right boii


Before doing business with a supplier, a food establishment should do what?

Answers

do a background check on the employees and the supplier, and insure it isn't illegal, or unsanitary.

Answer: perform an initial supplier assessment and food safety programs review

Explanation:  got it right on edge.

What is the best choice to be safe while riding your bicycle?

Answers

i am not sure i understand the question. but if it you are asking what i think you are the answer could be one o the following.
using protective gear, such as knee pads, helmet, and hang grips. having water bottle, knowing the directions to where you wish to go, and a reflective light on the back.

Answer:

Wear a helmet to protect your head.

Explanation:

Although helmet use by cyclists is not mandatory, many experts recommend and influence the use of the equipment. The recommendation is based on the fact that bicycle accidents are common and overturns exist. Like any two-wheeled vehicle, the bike is subject to falls and there is nothing to stop the rider from banging his head on the sidewalk or asphalt. For this reason, we can say that the best safety option when riding a bike is to wear a helmet and to protect the head.

Less than half of teens have tried marijuana in their lifetimes

Answers

False, the true fact is that 90% of kids in high school will be offered a drug...

list of best practices to help patients avoid unexpected cost due to balance billing.

Answers

A list of best practices to help patients avoid unexpected cost due to balance billing may include applying laws to both HMOs and PPOs, holding consumers harmless from extra provider charges, prohibiting providers from balance billing, and adopting adequate payment standards and dispute resolution processes to resolve payment disputes between providers and insurers.

During resistance training, how quickly should you move?
A .

Answers

you should be lifting at 2 seconds per lift, while slowly lowering over time

Which of these should always be included in a personal health plan for fitness? Select the three correct answers. A. Goals B. Suffering C. Frequent measurements D. Initial assessment

Answers

A,C,and D
Hope they help

Answer: Initial assessment, Frequent measurements, Goals

Explanation: you need to have goals for initial assessments and for frequent measurements.

Hope this helps :-)

good coding specialist share. which of the following characteristics?????

Answers

Attention to detail, thorough understanding of medical processes, ability to analyze large amounts of information.
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