What is the curie point - Study guides, Class notes & Summaries

Sonography Canada CORE (Physics) | 2023/24 questions and answers what is a transducer? - anything that converts one form of energy to another form of energy what does an ultrasound transducer do? - converts electropotential energy into mechanical and mechanical energy into electropotential energy what is the curie point? - if a crystal is heated beyond the curie point (360 degrees for PZT) the crystal can lose piezoelectric effects what material is traditionally used for ultrasound tras...

Nuclides with the same atomic number but different numbers of neutrons are called? -ANSWER Isotopes Two nuclides with the same atomic numbers are called? -ANSWER Isobars Two nuclides with the same number of neutrons but different atomic numbers are called? -ANSWER Isotones What is a radionuclide? -ANSWER A nuclide that emits particular or photon energy to achieve a more stable energy state Another name for a helium ion containing two protons and two neutrons is? -ANSWER an alpha part...

what is a transducer? -ANSWER anything that converts one form of energy to another form of energy what does an ultrasound transducer do? -ANSWER converts electropotential energy into mechanical and mechanical energy into electropotential energy what is the curie point? -ANSWER if a crystal is heated beyond the curie point (360 degrees for PZT) the crystal can lose piezoelectric effects what material is traditionally used for ultrasound trasnducers? -ANSWER Lead ziconate titanate (PZT) ...

The Curie temperature is the temperature at which? - ANS Ferromagnetism is lost What value is required to convert dose in a gas chamber to dose in the medium? - ANS Mass stopping power ratio Laplacian operator, ^2 is? - ANS -_- Mutation doubling dose for humans is __ Gy - ANS 1 Guy Lead shielding in a diagnostic x-ray wall is ___ mm - ANS 1 mm Greatest dose from 14 Mv no's comes from - ANS recoil protons Double precision arithmetic ref...

The activity of a radioactive source The term "Curie" defines: a. The exposure of a radioactive source b. The intensity of a radioactive source c. The activity of a radioactive source d. The output of a radioactive source Reddening of the skin, loss of hair, blistering Which of the following are symptoms of an acute extremity overexposure? a. Nausea, vomiting, diarrhea b. Fatigue, nausea, reddening of the skin c. Diarrhea, blistering, loss of hair d. Reddening of the skin, los...

HESI A2 HESI BIO. 1. Which of the following is not true of mitosis? A. Mitosis produces daughter cells B. Mitosis has five main stages C. Mitosis can only be done by haploids D. Following mitosis, daughter cells are identical to parent cells 2. In meiosis, the chromosome number is reduced from: A. 46 to 23 B. 46 to 33 C. 28 to 14 D. 24 to 12 3. Cellular respiration takes place in which of the following? A. Golgi apparatus B. Mitochondrion C. Chloroplast D. Ribosome 4....

RADIATION STATE TEST EXAM LATEST UPDATE GRADED A A X-ray machine after turning off still emits radicactivity due to a process known as the Compton effect. False The disintegration or breaking up of an radiation is called radioactive decay. True Old depleted radiography sources can be treated as ordinary trash and thrown in the garbage False The strength of a source is calied the activity The time required for one-half of the unstable atoms to decay is known as half-life The spread of radio...

Specific emission Constant for Co60 is? 14R/Hr/ci @ 1ft Specific emission Constant for Ir192 is? 5.2 R/Hr/ci @ 1ft What is the Half Life for Ir192? 74 days What is the Half life for co60 ? 5.3 years In the beginning of Radiography, Wilhelm Conrad Rontgen scientist won the Nobel prize and how did he get to do this ? in 1896 while investigating phosphorescence in uranium salts, he accidentally discovered radioactivity . as he was investigating the work of Mr ...

Fixed mAs/ variable kVp chart - Answer adjust kVp by multiplying by 2 (+/-) for every increment of ONE centimeter or inch of size difference Fixed KVP/ variable mAs chart - Answer adjust mAs by multiplying (+) by 2 for every 4-5 centimeter or inch size difference digital image quality factors - Answer brightness, contrast resolution, spatial resolution, distortion exposure indicator, noise brightness - Answer intensity of light coming through monitor contrast resolution - Answer how ...

Chapter 01 - Basic Concepts of Chemistry 1. A hypothesis is a ________. a. well-tested unifying principle that explains a body of facts b. setofexperimentsdesignedtotestatheory c. tentative explanation or predication based upon experimental observations d. setofquantitativedata e. concise statement of behavior that is always the same under the same conditions ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: c 1 True 1.1 Chemistry and Its Methods Dynamic Question 2. All of the followi...