If a rock concert has a sound level of 120 dB associated with it and a cheering crowd has a sound level of 90 dB associated with it, how many times greater is the rock concert's intensity compared to the cheering crowd's intensity?
1.30
2.90
3.300
4.1000
4
Physics & Space Science
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The hottest star in the Orion Nebula is about the same mass as the Sun
Indicate whether the statement is true or false
Physics & Space Science
Microwaves have ________ wavelengths and ________ energies compared to the visual band
a. shorter, higher b. longer, lower c. shorter, lower d. longer, higher
Physics & Space Science
Choose the correct terms to make the statement correct: ___Chemical/Biological__ evolution occurs before __chemical/biological____ evolution
Fill in the blank(s) with correct word
Physics & Space Science
Gas in a container expands at a constant pressure of 3 atm. Find the work done (in J) by the gas if the initial volume is 5 liters and the final volume is 10 liters
a. 0 b. 150 c. 15 d. 1 500 e. 1.5
Physics & Space Science