Question

an ice cream has marked a value of 700Kcal. How many kilowatt hour of energy will it delivered to the body as it is digested​

Answer 1

Answer:

$\bigstar$ Given:

⇒ An ice cream has marked a value of 700Kcal

$\bigstar$ To Find:

⇒ How many kilowatt hour of energy will it delivered to the body as it is digested​ (in KWh)

$\bigstar$ Solution:

$\rm 1 kcal = 10^3cal=1000cal = 4200 J$

$\blue{\boxed{\boxed{\rm 1kcal = \dfrac{4200}{3.6*10^6}\; \;KWh }}}$

$\sf Therefore,\; for\; 700kcal$

$\implies \rm 700kcal = \dfrac{700*4200}{3.6*10^6}\; \;KWh$

$\sf On \;further \;Simplification \; we \;get\;,$

$\rm \implies 0.81KWh$

$\orange{\boxed{\boxed{\sf{0.81KWh}}}}$

Answer 2

0.81 KWh

Explanation:

Given:

Value of Ice Cream = 700Kcal

To Find:

The kilowatt hour of energy will it delivered to the body as it is digested.

Solving:

=> 1 kcal

=> $10^{3}$ cal

=> 1000 cal

=> 4200 Joules

Formula Used For Finding 1 kcal:

1 kcal =  $\frac{4200}{3.6*10^{6} }$ KWh

In the question we are given 700 kcal:

Finding For 700 kcal:

= 700 kcal = $\frac{700*4200}{3.6*10^{6} }$ KWh

Solving Further:

= 0.81 KWh

Therefore, 0.81 Kilowatt Hour of energy will be delivered to its body as it is digested.