On cold, clear nights horses will sleep under the cover of large trees. How does this help them keep warm?
Q: Leila is building an aluminum-roofed shed in her backyard to store her garden tools. The flat roof…
A: Temperature during winter= -10 degree Celsius Temperature during summer = 38 degree Celsius…
Q: Many American homes have an outdoor pool for the children. On a hot summer day, why do the children…
A: American uses outdoor pool for children. Children find relief in the pool
Q: Explain why burns caused by steam at 100°C on the skinare often more severe than burns caused by…
A: Given information: It is given that the burns caused by steam at 100 oC on the skin are more severe…
Q: How can you cause heat to flow from a body at lower temperature to one at higher temperature?
A: Heat can flow from a body at high temperature to a body at low temperature by any one or combination…
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: A stone floor feels very cold to bare feet in the winter but a carpet in the same room feels…
A: A stone floor feels very cold to bare feet in the winter but a carpet in the same room feels…
Q: It’s a hot day, and your apartment is rather warm. Your roommate suggests cooling off the apartment…
A:
Q: As the sun shines on a 1500kg concrete slab, the slab absorbs 3.4kj of energy. Concrete's specific…
A: Give, mass of concrete slab =1500 kg =1500×103 gramHeat absorbs =3.4 kJ =3.4×103 Jspecific heat of…
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: You are cold, so you cover yourself in a blanket. A half an hour later you fell much warmer. Explain…
A: The blanket does two very important things to make it harder for that heat to leave you: The…
Q: A sleeping 68 kg man has a metabolic power of 69 W . How many Calories does he burn during an 8.0…
A: Here Mass of man = 68 kg Power = P = 69 W Time = t = 8 hrsWe have to calculate the energy burn in…
Q: freezing
A: Water has a very high heat capacity and act as a thermal buffer so it prevent food from freezing.
Q: Rhys has to sew a button on his shirt, but he finds that he can't thread the needle (i.e. the cotton…
A: As the needle is made up of steel, we can use the coefficient of linear expansion to calculate the…
Q: It is important for the body to have mechanisms to effectively cool itself; if not, moderate…
A:
Q: The human body can maintain its customary temperature of 37°C on a day when the temperature is above…
A: Heat transfer is a branch of thermal physics that gives us the idea of generation of heat and…
Q: Why do you feel uncomfortably warm on a hot and humid day?
A: We feel uncomfortably warm on a humid day because as the humidity increases the rate of evaporation…
Q: Vanessa's 80-year-old grandmother sets her thermostat at 26°C (80°F) and wears a sweater on balmy…
A: Ans:- Most elderly people have poor blood flow to the skin, thus, their skin become cold, so…
Q: 1). Compare the heat needed in taking 1 kg of gold from 25° C to 2700° C to taking 1 kg water from…
A:
Q: For thermal energy to move from a cold object to a warm object, what must happen?
A: In natural flow, heat flow from hot object to cold object, without aid of any device.
Q: If you apply an ice pack to an injured knee , will your body temperature decrease ?
A: No, The body temperature will not decrease.
Q: A 0.7-kg glass bowl (celass= 0.2 kcal/kg°C) and a 0.7 kg iron pan (Ciron= 0.11 kcal/kg°C) have a…
A: Given data *The mass of the glass bowl is mg = 0.7 kg *The specific heat capacity of glass is cg =…
Q: An old method for breaking boulders was to put them in a hot fire and then to douse them with cold…
A: This is because of sudden thermal expansion and contraction
Q: You are cold, so you cover yourself in a blanket. A half hour later, you feel much warmer. Explain…
A:
Q: During winter, when nights can be really cold, you will find that placing a large tub of water in a…
A: Specific heat refers to the amount of heat required to increase the temperature per unit mass of an…
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: A new liquid substance has been discovered that freezes at 38 Celsius and has a latent heat of…
A:
Q: Hi! can you give me a brief explanation about calorimetry?
A: Calorimetry is a type of science which deals with the change in energy of the system when it…
Q: You're considering purchasing a new sleeping bag whose manufacturer claims will keep you warm to…
A: Given that the bag's thickness is 4.0 cm, the rate at which the body generates heat is 100 W, and…
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