01 May Question-1: Which of the following is caused by, or is an example of, conv
Question-1: Which of the following is caused by, or is an example of, convection? Select one or more: i. A microwave oven cooking food. ii. An afternoon sea breeze. iii. An element on an electric stove heating a frying pan. iv. The Sun’s heat travelling through space. v. Ice cubes in a glass of water, cooling the water at the bottom of the glass. vi. All the water in an electric jug is heated by the element at the bottom of the jug. Question-2: Match the situation with the main method of heat transfer. i. Bread in a toaster is cooked into toast. ii. A heater placed on the floor in a room will soon warm all the air in the room. iii. Water feels colder than air of the same temperature. iv. Your face feels warm when facing towards a nearby campfire. v. A fan-forced oven cooks food faster. vi. A car bonnet feels hot when you touch it. vii. The metal handle of a pot of boiling water gets warm. viii. Turtles warm up by basking in the Sun. Question-3: The Sphynx cat is a breed of housecat which lacks the fluffy coat of more traditional breeds. The body of a Sphynx cat feels warmer to touch than the body of a normal cat. Which of these sentences explains why? i. Since it has no fur, the Sphynx cat’s skin is more easily warmed by the Sun. ii. Having no fur means that the Sphynx cat’s body heat can rise (due to convection) much easier than from a normal cat. iii. A normal cat’s fur is an insulating layer, so when you touch it, your skin is insulated from the cat’s body heat. iv. The Sphynx cat has a higher body temperature to keep it warm, since it doesn’t have any fur. Question-4: Sheep have a core body temperature of 39oC. Sheep will develop hypothermia if their core body temperature falls below 37oC. The thermal conductivity of sheep’s wool is 0.038 W.m-1.K-1. The specific heat capacity of a sheep is 4180 J.kg-1.K-1. A sheep has a mass of 68 kg. Calculate the amount of heat this sheep must lose to develop hypothermia. Question-5: A careless farmer sends this sheep out to graze on a very cold winter day when the temperature is -10oC. The sheep’s coat has a thickness of 3.9 cm and a surface area 1.6 m2. Calculate the rate of heat loss from the sheep on this cold day. Assume that heat is lost only through the sheep’s wool coat. Question-6: Calculate how long it will take this sheep to develop hypothermia if left outside on this cold d
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.