00:02
Hi there.
00:03
In this question, we are trying to convert from kilojoules to calories.
00:10
And we are given an equality that tells us that one calorie is equal to 4 .18 joules.
00:24
Okay, so that could get us from joules to calories, but we need a first get from kilojoules to joules.
00:32
So we need a relationship between kilojoules and joules.
00:38
Well, the prefix kilo means 1 ,000.
00:41
Whether it's with jewels, meters, grams, whatever you put the metric prefix kilo with, it means 1 ,000 of those.
00:49
So there are 1 ,000 joules and 1 kilojoules.
00:53
Okay, so we have two equalities to get us those two steps that is going to take to get from kilojoules to calories.
01:01
Let's go ahead and set this up using dimensional analysis and solve.
01:05
There are 1 ,001 kilojoules given to us in the problem, and we want to convert that to calories.
01:13
So in my first step, i need to convert from kilojoules to joules.
01:17
So i'm going to use that second equality there.
01:21
And i want kilojoules to cancel...