1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
larisa86 [58]
3 years ago
14

If a radiographer receives an exposure of 0.05 millisievert (msv) at a distance of 1.5 feet from the tube of a portable x-ray un

it, what will the exposure be at a distance of 6 feet from the tube?
Social Studies
1 answer:
otez555 [7]3 years ago
7 0

Answer:

0.003125 msv

Explanation:

I_1 = Initial Exposure = 0.05 msv

I_2 = Final Exposure

D_1 = Initial distance = 1.5 ft

D_2 = Final distance = 6 ft

Exposure is inversely related to the distance squared (inverse square law)

I\propto \dfrac{1}{D}

So,

\dfrac{I_1}{I_2}=\dfrac{D_2^2}{D_1^2}\\\Rightarrow I_2=\dfrac{I_1D_1^2}{D_2^2}\\\Rightarrow I_2=\dfrac{0.05\times 1.5^2}{6^2}\\\Rightarrow I_2=0.003125\ msv

The exposure at the given distance is 0.003125 msv

You might be interested in
Which direction would you go to get from Washington DC to Mexico
tamaranim1 [39]
Sothwest

Hope this helped
7 0
3 years ago
Diseases in the present age are very different from diseases of the past discuss ​
PolarNik [594]

Answer:

Control and prevention measures had decreased the incidence of many infectious diseases, and with the ability to continue to identify new antibiotics, to handle new problems, and the ongoing development of appropriate vaccines, his statement appeared to be appropriate.

In the US, similar feelings were expressed and funding for infectious disease fellowships began to decline with federal resources being directed elsewhere.

The history of the world is intertwined with the impact that infectious diseases have had on populations. Evidence of smallpox has been found in 3000-year-old Egyptian mummies. Egyptian papyrus paintings depict infectious diseases such as poliomyelitis. Hippocrates wrote about the spread of disease by means of airs, water, and places, and made an association between climate, diet, and living conditions. Investigators described miasmas as the source of infections. Fracastoro discussed the germ theory in the 1500s and three routes of contagion were proposed—direct contact, fomites, and contagion from a distance (airborne). Epidemics of leprosy, plague, syphilis, smallpox, cholera, yellow fever, typhoid fever, and other infectious diseases were the norm.

The development of the microscope by Leeuwenhoek in the 1600s allowed scientists to visualize micro-organisms for the first time. The 1800s brought knowledge of the cultivation and identification of micro-organisms. Vaccines were developed and used which introduced specific methods to our storehouse of measures for control and prevention. Pasteurization was another important contribution to disease control. An appreciation of the environment and its relationship to infectious diseases resulted in implementation of broad control measures such as community sanitation, personal hygiene, and public health education. The importance of nutrition was appreciated for its impact on infectious diseases.

The 20th century brought chemotherapy and antibiotics into our infectious disease armamentarium. Greater dependency upon vaccination programmes and health education became important allies in our efforts at reducing the occurrence of infectious disease. So Sir McFarland’s statement was not an off hand remark.

But we are now aware that emerging and re-emerging infections have become a significant worldwide problem. In 1991, the Institute of Medicine of the National Research Council in the US appointed a 19-member multidisciplinary expert committee to study the emergence of microbial threats to health. Their report published in 1992 was entitled, ‘Emerging Infections —Microbial Threats to Health in the United States’ but the concepts that they discussed certainly have worldwide application.1 They concluded that six categories of factors could explain the emergence or re-emergence of infectious diseases. These factors are: Human demographics and behaviour; Technology and industry; Economic development and land use; International travel and commerce; Microbial adaptation and change; and Breakdown of public health measures.

Explanation:

4 0
3 years ago
8. Which of the following is an example of a peripheral?
trasher [3.6K]

THE ANSWER IS D. CPU

7 0
3 years ago
How do public safety regulations protect workers
pav-90 [236]

The Industrial Revolution brought with itself a new dynamic between employer and employee. The main change of the revolution in this dynamic was the introduction of the worker's safety, as one of the main requirements that every business and workplace should have in order to operate.  The public safety regulations exist in order to protect the workers from different hazards that the job can bring. It also sets some boundaries and rules for the employer to consider and follow, in order to protect the safety of the employees.  Employers need to evaluate what things can harm the employees and implement the required protections so that no accidents occur.  Workers are also trained in terms of safety in the workplace, so that they can identify any risk and avoid it. At every work place there should be first aid's facilities and medical support, in the events of an accident. Every employee has to be insured at his/her work in case they get sick or injured while working. Public safety regulations exist to protect and benefit the workers in their workplace.

5 0
3 years ago
Read 2 more answers
Read this chart created by a student researcher.
galben [10]

Answer:

education

Explanation:

cause albert einstein is known for his knowledge

hope this helps

stay safe and healthy

peace

6 0
3 years ago
Read 2 more answers
Other questions:
  • According to Sternberg and Lubart, creative people are willing to champion ideas that they feel have potential but that most peo
    13·2 answers
  • Marx thought of inequality in terms of two main classes. in contrast, weber envisioned inequality in terms of
    14·1 answer
  • Paul had three ways to use his allowance money: spend, save, or donate. He decided to donate his money to charity. Any value giv
    12·2 answers
  • How did the U.S. gain an overseas empire?
    14·1 answer
  • What are the difference between European and Native Americans attitudes towards land use and land owner ship?
    11·1 answer
  • Which of the following is not a theory about why the minoan civilization disappeared
    14·2 answers
  • Our ability to be aware of some parts of our environment while ignoring other parts is called:
    8·2 answers
  • How do we know that wind has energy?
    14·1 answer
  • Which stage of metamorphosis starts when a caterpillar breaks out of the chrysalis? (2 points)
    13·2 answers
  • What is one reason why King Henry VIII started the Church of England?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!