P1v1/t1 = p2v2/t2
p(0.5 m^3)/(20+273 K) = pv2/(45+273 K)
find v2
Answer:
D. Validity group
Explanation:
A validity group is not necessarily a component of a normal experiment.
A normal experiment is made up of the dependent variables, independent variables, and most times the control group.
- The dependent variable is one that relies on the outcome of the effect produced from the experimental design
- The independent variable is the one that causes a desired effect under the study.
- The control group is a group that does not receive any treatment nor attenuation of the conditions.
Wavelength = (speed) / (frequency)
= (30 m/s) / (60/sec) =
= 0.5 meter .
Well, the length of every day is 24 hours all over the world.
You must be talking about the length of daylight.
On the equator, the longest daylight (sun up in the sky) is just about
12 hours, twice a year, around March 21 and September 21.
At the north and south poles, the sun is up in the sky for SIX MONTHS.