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Exposure to what, exactly? The most common kind of exposure that is used is exposure to electromagnetic radiation, especially in the higher intensities. One SI unit is the Gray (Gy). 1 Gray is equivalent to 1 Joule of energy absorbed by 1 kg of matter. More useful is the SI unit Sievert (SV), which accounts for type of radiation and all other pertinent factors.
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What is a proper unit?
A proper unit is a unit of measurement that is commonly accepted within a specific system of measurement, such as meters in the metric system or pounds in the imperial system. Proper units are used to quantify and express physical quantities accurately and consistently.
Why are several units associated with the same physical quantity?
Multiple units may be associated with the same physical quantity due to historical reasons (different regions developing their own units) or different systems of measurement (metric vs imperial). In some cases, units may be related by simple conversion factors, allowing for flexibility in expressing measurements.
Can a quantity have units but still be dimension less give example?
Yes, a quantity can have units but still be dimensionless if the units cancel out when they are raised to the power of 0. For example, specific volume (volume per mass) has units of m^3/kg, but when you divide volume by mass, the units cancel out and it becomes dimensionless.
Can a quantity have units but still be dimensionless?
No. "Dimensionless" means there are NO units involved.
What unit is best for expressing the density of a solid?
The best unit for expressing the density of a solid is typically grams per cubic centimeter (g/cm^3) or kilograms per cubic meter (kg/m^3), depending on the scale of measurement and convenience. These units represent the mass of the solid per unit volume.
Which is an example of proper units for expressing exposure rate?
R/hr
What are the units expressing force?
Force is measured by Newton. SI unit for that is N
What is the SI unit fro expressing the quantity?
There are different units for different quantities.
What units are best for expressing the density of a solid?
Cm^3. THE 3 IS WRITTEN AS AN EXPONENT.
What is the importance of your choice of units in expressing the value of the ideal gas law constant?
If any other units are used, the value will be different. --Depending on the units you chose the value of the constant differs
What are the proper units of mass?
The kilogram.
What is the SI units for expressing quanities?
Meter (m), kilogram (kg), second (s), ampere (A) and so on.
What is the SI unit for expressing gravitation?
"Gravitation" doesn't really have units. Weight, which is the force experienced by an object due to gravity, is a force, so it's expressed in force units: newtons. A newton is a kilogram - meter per second squared expressed in SI base units.
What are all the proper units of mass liquid volume and solid volume?
Proper units of mass include grams (g) and kilograms (kg). Proper units of liquid volume include liters (L) and milliliters (mL). Proper units of solid volume include cubic meters (m^3) and cubic centimeters (cm^3).
Meaning of forty?
Four times ten; thirty-nine and one more., The sum of four tens; forty units or objects., A symbol expressing forty units; as, 40, or xl.
How many roentgens would one receive with an x-ray exposure of 0.02?
An exposure of 0.02 what? No units are given, so conversion to roentgens cannot be made.
What are disadvantages of standard units?
One disadvantage of standard units is that they may not always accurately represent the specific quantity being measured, leading to potential inaccuracies in calculations or comparisons. Additionally, standard units may not be easily understood or relatable to individuals who are not familiar with them, making communication of measurements more challenging. Finally, relying solely on standard units may limit flexibility in expressing measurements in alternative or more appropriate units for a given context.
