is this correct Which of the following is a type of radioactive radiation that has no...
Which of the following is NOT a type of radioactive emission? O beta rays O positrons O alpha rays O All of these are types of radioactive emissions. gamma rays
Which of the following statements about electromagnetic radiation is true? A.) It always travels at 3×108 m/s. B.) It consists of perpendicularly oscillating electric and magnetic fields, and the direction of propagation is perpendicular to both. C.) It consists of oscillating electric and magnetic fields that are parallel to one another and perpendicular to the direction of propagation. D.)The oscillating electric and magnetic fields are completely out of phase with one another
for Technetium-99 answer the following: Describe the Radiation type that is emitted. Describe Type of Radiation, Symbol, Mass number and Charge. Describe Radiation and Shielding Required. How the travel distance “Radioactive” Isotope in Air, Tissue, and what would be used for Shielding? Can it penetrate through the body? Describe, in greater detail than above, all medical application(s) and how it is used. Describe if there are any negative or hazards associated with element? Calculate the amount of time needed to...
Which one among the following statments is CORRECT? A.An electromagnetic wave has an electric field and a magnetic field vibrating perpendicular to each other. B.Electromagnetic waves cannot travel in empty space. C. An electromagnetic wave has an electric field and a magnetic field vibrating parallel to each other. D. Gamma rays are not electromagnetic waves.
Which one of the following statements is correct when you are choosing the type of forecasting model to use for creating forecasts of the future? Multiple Choice Leading indicators need to be used. Internal factors such as price changes, product improvements, and advertising play a much larger role than external factors. A forecasting model based solely on the model's "fit to history" is the best choice. The model that most closely matches the recent history is the best model.
Which of the following forms of electromagnetic radiation has the longest wavelength? a) microwaves b) ultraviolet c) infrared d) radio-waves Rank the following types of electromagnetic radiation in order of decreasing energy. a) X-rays > Ultraviolet > Visible > Microwaves b) Microwaves > Visible > Ultraviolet > X-rays Microwaves > Ultraviolet > Visible > X-rays d) X-rays > Visible > Ultraviolet > Microwaves
Which statement is not correct? Select one: Magnetic fields can create electric fields. O Electric currents can create magnetic fields. Magnetic flux in a region cannot be changed if the magnetic field is not changing. Using a magnet and a circular ring of wire, one can create electric currents. O
Select True or False for the following statements about electromagnetic waves. 1. The sun's radiation is most intense in the visible region. 2. X-rays can be produced in transitions involving inner electrons in an atom. 3. Gamma rays travel in vacuum at the same speed as the visible light. 4. Blue light has a longer wavelength than red. 5. Ultraviolet radiation causes common sunburn. 6. A vertical automobile antenna is sensitive to electric fields polarized horizontally. 7.Radio waves have wavelengths...
Which of the following types of radiation has the highest velocity? Select one: A. infrared B. X rays C. ultraviolet D. visible E. All radiation has the same velocity.
Which of the following factors affects the amount of radioactivity of a sample of radiur A. external pressure B. temperature C. amount of radium O D. presence of electric and magnetic fields