a cook you hold one end of a metal pot against a hot flame and then notice that the end in your hand soon becomes very hot. Explain using your knowledge of physics whether

Q: Give an example to illustrate why you cannot accurately judge the temperature of an object by how…

A: The temperature of an object measures the coldness or hotness of the object, whereas heat is in the…

Q: Which cube releases heat more easily and why? The brick or iron cube? Explain why brick or iron…

A: Brick and Iron

Q: Which of the following statements is NOT true? O The amount of heat needed to increase the…

A: Heat added = specific heat × mass × change in temperatures. Hence  Higher the specific heat, the…

Q: if you are wearing clothes to prevent heat from escaping your body in the winter, how do you explain…

A: Wearing clothes helps in holding air in little pockets close to the body. This air gets warmed by…

Q: Heat is added to a substance. Is it safe to conclude that the temperature of the substance will…

A: Heat added to any matter could lead to a change, in the temperature of the matter or in the state of…

Q: what is the ratio of the

A: Mass of object 1, =m/2 Mass of object 2=m Specific heat of object 1, =2S Specific heat of object…

Q: Consider a person outdoors on a cold night. Construct a problem in which you calculate the rate of…

A:

Q: hagine yourself on the beach in a hot sunny day, most (if not all) of the heat ou are absorbing…

A: Imagine yourself on the beach in a hot sunny day. Most dominant heat transfer mechanism.

Q: 9) It is the morning of a day that will become hot. You just purchased drinks for a picnic and are…

A: Thermal conductivity is the measure of the ability of a given material to conduct or transfer heat.

Q: What would happen to the temperature of the gas

A:

Q: On a cold day, you grab a piece of metal and a fallen tree limb, both with bare hands. Both have…

A: Given: A metal and tree limb at the same temperature.

Q: Wood conducts heat very poorly—it has a very low conductivity. Does wood still have a low…

A: Red-hot coals still have low conductivity. Hence, a person can walk safe barefoot (or touch) on…

Q: Two bodies A and B are of same mass and same amount of heat is given to both of them. If the…

A: Given: Two bodies A and B having same mass and same amount of energy.  Definition of Specific Heat.…

Q: Two identical bubbles of gas form at the bottom of a lake, then rise to the surface. Because the…

A: Bubble A undergoes adiabatic compression. Bubble B undergoes isothermal compression.

Q: You put a piece of ice into a glass of lemonade at room temperature. Which statement cor- rectly…

A: we know transfer of heat always takes from hotter object to the colder object.

Q: The mass of Turkey is 25lbs Specific Heat of Turkey is 2850; kgCo The initial Temperature of Turkey…

A: The specific heat capacity of a material is the amount of heat required to increase or decrease the…

Q: A 1,280 kg car going 29 m/s is brought to a stop using its brakes. Let's assume that a total of…

A:

Q: Despite having a temperature of thousands of degrees Celsius, the sparks produced during welding do…

A: To explain why heat is not the same as temperature, first we should have the idea of these two…

Q: A burning stove with a large flat rectangular surface on top has enough space for cooking, if…

A: Given, k =79.5  A = 2100 cm2= 0.21m2 Tin = 168o C Tout = 26o C x = 40.8 cm = 0.408 m

Q: a) If you want to keep you cup of coffee as warm as possible when you drink it, should you add the…

A: a) Here, you should add the cold cream right after you pour the coffee. The reason is the…

Q: 1. Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs…

A:

Q: (g) Figure Ql.(g) below shows the transfer of heat from the sun to the earth. Identify the type of…

A: The heat transfer is of three types:  Conduction : This type of heat transfer takes place in solids…

Q: At night, the surface of the earth cools, mostly by radiation. The surface radiates energy upward;…

A: Why does being under a tree keeps the ground warmer?

Q: A student pushes a cardboard box across a carpeted floor and afterwards notices that the bottom of…

A: Introduction: Every material has got roughness on its surface. This roughness is a result of the…

Q: measuring the specific heat of a metal, you used the highest measured temperature for calculating…

A:

Q: As a cook you hold place a metal pan(with a wooden handle attached to it) on top a hot flame and…

A: Given As a cook you hold place a metal pan(with a wooden handle attached to it) on top a hot flame…

Q: After driving a car for a long time, you can feel how warm the engine is when you place your hand on…

A: After driving a car for a long time, the hood becomes warm due to the conduction of heat from the…

Q: Lucky for us, our Earth is warmed by the Sun during the day. Every night though, Earth radiates some…

A:

Q: You are cold, so you cover yourself in a blanket. A half hour later, you feel much warmer. Explain…

A:

Q: To help prevent frost damage, 6.7 kg of water at 0°C is sprayed onto a fruit tree. Hint…

A: The heat required for the change in temperature of an object is given by Q = mc∆T, where m = the…

Q: Explain why it takes longer to cook a large cheese pizza (400g) than it does to cook a small cheese…

A: Amount of heat required to increase the temperature of  m kg substance by ∆T degrees is given by -…

Q: A cold block of metal feels colder than a block of wood at the same temperature. Why? A hot block of…

A: The metal block conducts heat from hand to the block. When the hand is in contact with metal block…

Q: To measure the heat capacity of an object, all you usually have to do is put it in thermal contact…

A: Given: The initial temperature of the water is 20° C. The mass of the water in the cup is 250 g. The…

Q: On a hot summer day, a student turns his fan on when he leaves his room in the morning. When he…

A: The fan makes us feel cooler due to the process of evaporation taking place on the skin of our…

Q: After class, I walk my dog around the block. Describe how the heat is being transferred in this…

A: The mode of heat transfer is due to heat by convention.