Question 56 An example of kinetic energy is  Group of answer choices natural gas. chemical energy. a coiled spring. a tree. running water.

Convert the following numbers of calories or kilocalories into joules and kilojoules (Remember: kilo means 1000.) a. 75.2 kcal b. 75.2 cal c. 1.41 × 10³ cal d. 1.41 kcal

4. A particular food contains only fat, carbohydrates and protein and has a total of 388 Calories. If 40% of the total Calories comes carbohydrates and 25% of the total Calories comes from protein, how many grams of a) carbohydrates b) protein and c) fat are present in this food item? Post Lab Activity- Critical thinking/Problem Solving Energy and Matter 1. Use your knowledge of changes of physical state of matter, to answer the following. a. Why do wet clothes dry more quickly during a hot summer day than a cold wintery day? TV MAR. tv 25

A sample of aluminum absorbs 136 J of energy and the temperature increases from 24.11 °C to 30.41 °C. What is the mass (g) of the sample? The specific heat of aluminum is 0.902 J/g °C. O 41.8 g O 77.3 g O 54.1 g O 23.9 g

1

How much heat is required to raise the temperature of 16.1 g of water from -25 °C to 175 °C? heat: 3.20565966 Incorrect keal

When a person eats to gain energy for activities, your body uses a Gravitational Potential Energy b. Elastic Potential Energy Chemical Potential Energy