Question

How much energy has your body used, in joules, if your health

device indicates that 450 Calories were burned during your workout? How many
Calories are in a dinner containing 3.5 x 100 joules

Answer 1

1. 1,882.8 joules
2. 83.652 calories

Step-by-step explanation:

Given:

Amount in calories = 450 calories

Amount in joules = 3.5 × 100 joules

Find:

1. Change in joules
2. Change in calories

Computation:

We know that,

1 calories = 4.184 joules

So,

Amount in calories = 450 calories

= 450 × 4.184

= 1,882.8 joules

Amount in joules = 3.5 × 100 joules

= [3.5 × 100] / 4.184

= 83.652 calories