Inverse square law - Study guides, Class notes & Summaries

How many stars are in our galaxy? - correct answer 4 x 10^11 What is our cosmic address? - correct answer Earth Solar System Interstellar Neighborhood Milky Way Lanieakea Observable Universe Infinite Universe What is an astronomical unit? - correct answer The average distance between the Sun and the Earth As a blackbody becomes hotter, it also becomes ______ and ______. - correct answer More luminous, bluer. If an electromagnetic wave's frequency increased, then - correct ...

Which of the following radiolucent landmarks is useful when mounting films in the mandibular anterior area? - Lingual Foramen According to the inverse square law, when changing the PID length from 8 to 16 inches, the beam's intensity is - 1/4 as intense Patients should wear a thyroid collar during which type of radiographic exposure? - Intraoral radiograph Personnel radiation monitoring devices are worn to - Record the occupational exposure received by the operator

A digital display device with higher megapixels has better spatial resolution A. True B. False correct answers True An advantage to viewing the AMLCD screen is that the image quality is equally good viewed from any anlge A. True B. False correct answers False A liquid crystal is a material in a___ state A. Liquid B. State between a liquid and a gaseous state C. Solid D. State between a liquid and a solid state correct answers D. State between liquid and a solid state A___ test t...

Acceleration is the measure of the change in what? a. density b. motion c. velocity d. mass e. speed - c. velocity One half second after starting from rest, a freely falling object will have a speed of about a. 20 m/s b. 10 m/s c. 5 m/s d. 2.5 m/s e. None of the above - c. 5 m/s The slope of a velocity vs. time graph tells you a. position b. maximum velocity c. average velocity d. acceleration e. maximum position - d. acceleration Which of the following is a private research la...

Which of the following radiolucent landmarks is useful when mounting films in the mandibular anterior area? - Lingual Foramen According to the inverse square law, when changing the PID length from 8 to 16 inches, the beam's intensity is - 1/4 as intense Patients should wear a thyroid collar during which type of radiographic exposure? - Intraoral radiograph Personnel radiation monitoring devices are worn to - Record the occupational exposure received by the operator The most common radio...

What is the inverse square law when it comes to radiation -:- Standing back by double the distance from a source of radiation (d to 2d) will quarter the dose to the radiologist or radiographer. It means that when you double the distance from the source of radiation, the intensity of radiation is diminished to a 1/4 of what it was originally. which exposure technique do the american academy of oral and maxillofacial radiology and the american association of dental schools recommend? ...

As sound travels through air, it does so as a - ANSWER-longitudinal pressure wave The period of a sine wave - ANSWER-is shorter for higher frequency sounds Pressure can de defined as - ANSWER-force divided by area Intensity can be defined as - ANSWER-power per unit area The inverse square law means that - ANSWER-intensity decreases by a factor equal to the square of the change in distance Based on the equal loudness curves figure (2-18, p33), a 100 Hz tone would need to be approxi...

What role do therapeutic modalities play in rehabilitation? - - decrease pain - increase ROM - improve tissue healing - improve muscle recruitment Types of Therapeutic Modalities - - thermal (heat and cold) - electromagnetic (electrotherapy, diathermy, ultraviolet, and infrared light - mechanical (traction and compression) Cryotherapy (cold/ice) - - decrease blow flow/tissue metabolism - increase threshold for pain perception *ice, cold water/packs, vapocoolant sprays Thermothe...

The Inverse Square Law is commonly used in which environmental health program areas to calculate the intensity or strength of a substance at a specified distance from the point source? a. radiation, lighting, and noise b. noise, air emissions, and radiation c. radiation, fluoridation in water, lighting, and noise d. lighting, sewage contamination in stream, and air emissions -:- A If 15x + 3 = 7x - 13, then x equals a. - 2.0 b. +2.0 2 | P a g e | G r a d e A + | 2 0 2 4 / 2 0 2 5...

Which of the following radiolucent landmarks is useful when mounting films in the mandibular anterior area? - Lingual Foramen According to the inverse square law, when changing the PID length from 8 to 16 inches, the beam's intensity is - 1/4 as intense Patients should wear a thyroid collar during which type of radiographic exposure? - Intraoral radiograph Personnel radiation monitoring devices are worn to - Record the occupational exposure received by the operator The most common radio...