Mathematics, 09.02.2021 20:20 mihir50

The formula for the half-life of a radioactive isotope is shown below. If an isotope of radioactive polonium has a half-life of 138 days, how long does a sample take to decay from 20 g to 15 g?

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 13:10

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

Answers: 3

Answer

Mathematics, 21.06.2019 14:00

Which of the following of the following sets of side lengths could not form a triangle?

Answers: 3

Answer

Mathematics, 21.06.2019 18:20

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Answers: 1

Answer

Mathematics, 21.06.2019 23:50

Determine the area of a triangle with (see picture below)

Answers: 1

Answer

You know the right answer?

The formula for the half-life of a radioactive isotope is shown below. If an isotope of radioactive...

Questions

Physics, 27.01.2020 21:31

Suppose you are an astronaut making a space walk outside your space station when you're a jet pack runs out of fuel how can you use your empty jet pac...

Physics, 27.01.2020 21:31

Acar turns into a driveway that slopes upward at a 9 degree angle, car is moving at 6.5 m/s. if the driver lets the car coast, how far along the slope...

Mathematics, 27.01.2020 21:31

16 = -5 +z/4 , solve for z a. 69 b. -1 c. 9 d. 59...

Mathematics, 27.01.2020 21:31

What is the sale price if the original price is 112$ and the percent of discount is 32%...

Chemistry, 27.01.2020 21:31

Water molecules evaporate from a lake near the equator and rise into the atmosphere, as shown in the diagram below. as the molecules travel away from...

Biology, 27.01.2020 21:31

When people look through a telescope, air currents in the earth’s atmosphere can distort the images they see. in the 1950s, a scientist named h. w. ba...

Arts, 27.01.2020 21:31

Question 1 (true/false worth 1 points) the common meter consists of four lines of a particular number of beats that end in the rhyming pattern of a-b-...

Geography, 27.01.2020 21:31

¿cuáles son los factores que han aumentado la calidad de vida de tamaulipas?...

Chemistry, 27.01.2020 21:31

Which of the following is the major argument against the use of nuclear power to generate electricity? expense radioactive waste g...

English, 27.01.2020 21:31

The fruit tastes (blank). in the above sentence, the blank must be filled with a conjunction? a preposition? an adjective? or an adverb?...

History, 27.01.2020 21:31

All. of the folowing influenced the enlightenment except...

Mathematics, 27.01.2020 21:31

Acd usually sells for $11.00. if the cd is 20% off, and sales tax is 5%, what is the total price of the cd, including tax? a. $9.24 b....

Mathematics, 27.01.2020 21:31

The graph shows the amount of money paid when purchasing bags of candy at the zoo: a graph is shown. the x-axis is labeled from 0 to 9....

History, 27.01.2020 21:31

What ended the battle of yorktown? a. the american army began running out of food, so washington surrendered. b. the british army began...

English, 27.01.2020 21:31

Which statement best explains how the evidence of his excerpt leads to the inference that the men had intercepted a very important message?...

English, 27.01.2020 21:31

What does equiano fear will happen to him when he is taken aboard the ship...

Mathematics, 27.01.2020 21:31

To which set or sets of numbers does the number 1/5 belong? a rational numbers onlyb integers onlyc integers and rational numbers onlyd integers, whol...

Health, 27.01.2020 21:31

Which of the following signs may indicate heat exhaustion? a. muscle cramps, fatigue, and lightheadedness b. hunger, fatigue, and back pain c. overex...

Biology, 27.01.2020 21:31

The of a study establishes the boundary between finding significant support and lacking enough support for a researcher’s claima. significance...

Mathematics, 27.01.2020 21:31

Can someone plz me. how can you find the inequalities of 11/15 and 5/7. next 5/9 and 7/13. next 11/15 and 5/7. lastly 5/9 and 7/13. plz ....

More questions: Mathematics Another questions