The half-life of 30P is 2.50 minutes. If a sample of 30P has nuclei present, what is its activity?

a.

b.

c.

d.

e.


b.

Physics & Space Science

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An absorption spectrum is also called a bright line spectrum

Indicate whether the statement is true or false

Physics & Space Science

What are the dimensions of acceleration?

What will be an ideal response?

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Two cars go around a banked curve at the proper speed for the banking angle. One car has tires with excellent traction, while the other car has bald slippery tires

Which of these cars is more likely to slide on the pavement as it goes around the curve? A) the car with the new tires B) the car with the bald tires C) Neither car will slide. D) It depends on if the pavement is wet or dry.

Physics & Space Science

What motivated Arrhenius to calculate how changes in carbon dioxide might affect the climate?

A. He was seeking to understand the consequences of burning fossil fuels. B. He knew that the carbon dioxide concentration was increasing and sought to understand how that would affect the climate. C. He was seeking to understand why the world was rapidly warming up. D. He was seeking to understand the causes of ice ages.

Physics & Space Science