Energy efficency - iTeachChem

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iTeachChem Helper

I

iTeachChem Helper•6/11/25, 12:50 PM

@Dexter

iTeachChem Helper

I

iTeachChem Helper•6/11/25, 12:50 PM

Note for OP

+solved @user1 @user2...

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Sephrina

S

SephrinaOP•6/11/25, 12:50 PM

que 133

Sephrina

S

SephrinaOP•6/11/25, 12:50 PM

and sun's energy efficency is 1kW per square meter

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 12:59 PM

1 kWh = 3.6 * 10^6 joules per day
The sun delivers 1000 joules per square meter per second
The energy that gets converted by the panels = 19% of that = 190 joules per square meter per second
= 5.4 * 10^6 joules per square meter per day (considering an 8 hour day)

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:00 PM

now just divide the required 3.6 * 10^6 by 5.4 * 10^6 to get the area required

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:01 PM

did i mess up the calculations? is the answer supposed to be below 1

Sephrina

S

SephrinaOP•6/11/25, 1:01 PM

tht gives 0.6 right

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:01 PM

uh huh

Sephrina

S

SephrinaOP•6/11/25, 1:01 PM

but ans is 25

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:01 PM

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:01 PM

lemme recheck

Nimboi [ping if answering]

NNimboi [ping if answering]did i mess up the calculations? is the answer supposed to be below 1

Sephrina

S

SephrinaOP•6/11/25, 1:01 PM

nope it is 25m square

Sephrina

SSephrina nope it is 25m square

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:04 PM

sorry im goofy

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:04 PM

the houses use 40kWh not one

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:04 PM

that's = 1.44 * 10^8 joules

Nimboi [ping if answering]

NNimboi [ping if answering]the houses use 40kWh not one

Sephrina

S

SephrinaOP•6/11/25, 1:04 PM

yh they do

Nimboi [ping if answering]

NNimboi [ping if answering]sorry im goofy

Sephrina

S

SephrinaOP•6/11/25, 1:04 PM

lmao thts ok

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:04 PM

divide that by the 5.4 * 10^6 joules that we actually get from the sun

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:05 PM

that gives around 25

Sephrina

S

SephrinaOP•6/11/25, 1:05 PM

yup tht gives 26.3

Sephrina

S

SephrinaOP•6/11/25, 1:05 PM

got it

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:05 PM

bet

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:05 PM

also

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:05 PM

zumdahl?

Sephrina

S

SephrinaOP•6/11/25, 1:05 PM

ys

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:05 PM

what chem chapter is this

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:05 PM

this is physics

Nimboi [ping if answering]

NNimboi [ping if answering]what chem chapter is this

Sephrina

S

SephrinaOP•6/11/25, 1:05 PM

thermochemistry

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:05 PM

oh

makes sense

Sephrina

S

SephrinaOP•6/11/25, 1:05 PM

chp 6

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:05 PM

there was no chemistry involved

Nimboi [ping if answering]

NNimboi [ping if answering]oh 💀 makes sense

Sephrina

S

SephrinaOP•6/11/25, 1:05 PM

lmao true

Sephrina

S

SephrinaOP•6/11/25, 1:06 PM

maths
pure maths

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:06 PM

my beloved

Sephrina

S

SephrinaOP•6/11/25, 1:06 PM

it felt like those ques with raju bought 100 mangoes

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:06 PM

:kekw:

Sephrina

S

SephrinaOP•6/11/25, 1:06 PM

one costs blah blah

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:06 PM

it was that pretty much

Sephrina

S

SephrinaOP•6/11/25, 1:06 PM

i got confused in units

Sephrina

S

SephrinaOP•6/11/25, 1:06 PM

im just a kid

Sephrina

SSephrina im just a kid

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:07 PM

u literally about to be an adult

Nimboi [ping if answering]

N

Nimboi [ping if answering]•6/11/25, 1:07 PM

think about that for a second

Sephrina

S

SephrinaOP•6/11/25, 1:07 PM

im 16 only

Sephrina

S

SephrinaOP•6/11/25, 1:08 PM

+solved @Nimboi [ping if answering]

iTeachChem Helper

I

iTeachChem Helper•6/11/25, 1:08 PM

Post locked and archived successfully!

Archived by

@888280831863451688 (888280831863451688)

Time

June 11, 2025

Solved by

@759051317124792351 (759051317124792351)