Q2. (c) A sample of polonium-210 was left for 414 days.
After this time it had a mass of 1.45 x 10-4 g
The half-life of polonium-210 is 138 days.
Calculate the initial mass of the sample.

Which situation will have the highest resistance? a.long wire and high temperatureb.short wire and high temperaturec.long wire and cold temperaturedshort wire and low temperature

The pilot of a helicopter hovers at an altitude of 1200 feet over a park. the angle of depression to the base of a statue is 17 degrees. the angle of depression to the nearest park exit, in line with the statue, is 14 degrees. to the nearest foot, what is the distance from the statue to the exit?

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)