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SAT Math Videos 353 videos

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SAT Math: Calculating Thaw Power Through a Given Conversion 7 Views


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Description:

David is using a 1200-watt stove to thaw a frozen meal. If David's stove melts 3.6 grams of frozen food per second, which of the following represents the number of joules j required to melt g grams of frozen food?


Transcript

00:03

Okay shmoop ear's on math We're keeping on keeping on

00:06

David is using what's told the thought of frozen meal

00:08

David stove melt three point six grams of frozen food

00:10

per second which is percent Number of jewels j required

00:12

to melt g grams of frozen food So all right

00:17

we have the answer right here and we're kind of

00:19

noodling threw them a twelve hundred watts stove Is that

00:22

twelve hundred Give us any things that mean anything on

00:24

its own thinks oh no Right here Not yet So

00:27

well the worst part about cooking frozen meals is when

00:30

the meals are scorching hot on the outside but still

00:32

ice cold Middle Hopefully this problem can teach us how

00:35

to prevent that We know from our microwave were given

00:38

a twelve hundred what jules per second stove And we

00:40

know three point six grams of frozen food melts with

00:43

each passing second we need to manipulate this information to

00:47

work in our favor So we're going to let jake

00:49

cleverly represent jules And you know we're creative like that

00:53

So here's our little equation here Twelve hundred jewels the

00:55

second time's Just one second where it cooks Three point

00:59

sixty there So we have three hundred thirty three jewels

01:01

over grams there Okay so notice that units of seconds

01:06

can be found in the numerator and denominator So they

01:09

cancel out That leaves us with units of jewels program

01:12

which is exactly what we need So that's actually a

01:15

good start so that's it The answer is three thirty

01:17

three g there right there that's The answer It's letter

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