A source emits sound at a fixed constant frequency f. If the temperature of the air rises, the frequency you hear is higher than f
a. True
b. False
Indicate whether the statement is true or false
False
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A ZAMS star evolves __________ and to the __________ on the H-R diagram because ________________
a. downward, left, the core expands which causes the outer layers to expand b. upward, right, the core contracts which causes the outer layers to expand c. upward, left, the core expands which causes the outer layers to contract d. downward, right, the core contracts which causes the outer layers to contract
Which of the following is considered a chemical
change? a)boiling b)dissolving c)crushing d)rusting
The sun has a core in which energy travels outward primarily by radiation
Indicate whether the statement is true or false
Car batteries are often rated in ampere-hours. This information designates the amount of ______ that the battery can supply
1.current 2.power 3.energy 4.charge 5.potential