Remember that a dependent variable is a variable that is being measured in a experiment so in this case your answer would be option C "plant height." Since how they are measuring plants height.
Hope this helps!
Answer:
Approximately 3318 disintegrations per minute.
Explanation:
The activity
of a radioactive decay at time
can be found with the following equation:
.
In this equation,
is the natural base.
.
is the initial activity of the decay. For this question,
.- The decay constant
of this sample needs to be found.
The decay constant here can be found using the activity after 10 days. As long as both times are in the same unit (days in this case,) conversion will not be necessary.
.
.

Apply the natural logarithm to both sides of this equation.
.
.
.
Note that the unit of the decay constant
is
(the reciprocal of days.) The exponent
should be dimensionless. In other words, the unit of
should also be days. This observation confirms that there's no need for unit conversion as long as the two times are in the same unit.
Apply the equation for decay activity at time
to find the decay activity after 47.2 days.
.
By dimensional analysis, the unit of activity here should also be disintegrations per minute. The activity after 47.2 days will be approximately 3318 disintegrations per minute.
HOMER - <span>hypothesize, operationalize, measure, evaluate, and replicate/revise/report."</span>
Well natural gas consists of a steam generation unit, where fossil fuels are burned in a boiler to heat water and produce steam that then turns a turbine to generate electricity.
Answer:
Ethyl Acetate with a chemical configuration of : CH3CO2CH2CH3
Explanation:
Ethyl Acetate has a density of 902 kg/m³, molar mass of 88.11 g/mol and posses a boiling point of 77.1 °C.
It is to be understood that ethyl acetate is the ester of ethanol and it is mostly produced in mass production and most especially used in the production of domestic materials especially materials like glue, efostics and dissolving agent. This is a highly toxic and flammable substance. However colorless and possess a sweet smell, it can be highly poisonous when ingested.