Questions by John Ptacek

Questions by John Ptacek

Explain why controls are vital to scientific investigations?

asked Oct 3, 2023

1 answer

8 votes

181k views

During hot work, the fire watch shall do which of the following? A) All choices are correct B) Remain on the jobsite for a specified time period before and after hot work C) Verify proper spark containment

asked Aug 21, 2023

1 answer

36 votes

70.8k views

How does this code give me 17? (python) j = 3 z = {} z[2] = 1 z[7] = 3 z[5] = 2 for l in z: j += l print(j) I don't understand where the 17 is coming from. I thought the square brackets were basically

asked Mar 18, 2023

1 answer

28 votes

198k views

What’s bigger 12 ft or 42inches?

asked Jan 1, 2023

1 answer

16 votes

413k views

How many gallons of water will it take to fill up a swimming pool 26 ft in diameter and 4 feet deep

asked Aug 17, 2022

1 answer

7 votes

276k views

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