Fruit blossoms are permanently damaged when the temperature drops below about -4 °C, a “hard freeze.” Orchard owners sometimes spray a film of water over the blossoms to protect them when a hard freeze is expected. Give a reason for the protection.

Q: A rectangular window that is 1.20m wide and 1.8m high has a thickness of 6.2 mm and thermal…

A:

Q: How much heat must be added to a 2 kg block of ice at -11°C to change it to water at 24°C? A) 230…

A: Heat added is

Q: 17.) A tall unclothed athlete with a skin temperature of 34°C stands in a dark room with a…

A: As per bartleby guidelines i have solved first question out of multiple questions posted. if you…

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: On a very hot day, it’s possible to cook an egg on the hood of a car. Would you select a black car…

A: Body or surface having black color have more absorbing capacity of radiation and will reflect very…

Q: At what net rate does heat radiate from a 275−m2 black roof on a night when the roof’s temperature…

A:

Q: A cut-away drawing of a thermos bottle (also known as a Dewar flask), which is a device designed…

A: When two substances of different temperatures are mixed together then the transfer of heat takes…

Q: When Jenny stepped from the grass onto the black asphalt she noticed that there was a distinct…

A: specific heat capacity is defined as the amount of heat required to raise the temperature of 1 gram…

Q: 8. A 2.50-kg piece of aluminum that has a temperature of –150 °C is added to 1.30 kg of water that…

A: mass of aluminum (m) = 2.5 kg Initial temperature of aluminum = - 150oC mass of water = 1.30 kg…

Q: On a very cold sunny day, you wear a black coat and a transparent plastic coat. Which coat should be…

A:

Q: On a clear, cold night, why does frost tend to form on the tops, rather than the sides, of mailboxes…

A:

Q: It is possible to approximate the outside temperature based on how fast crickets are chirping.…

A: The points will be:

Q: Why will spraying fruit trees with trees with water before a frost help to protect the fruit from…

A:

Q: 12. A 0.400-kg of ice is initially at temperature of -12.0 °C. How much heat is required to melt…

A: mass of ice = 0.400 kg initial temperature of ice = -12oC final temperature = 0o C

Q: Why can’t you establish whether you are running a high temperature by touching your own forehead?

A:

Q: At what rate is heat lost through a 1.7m x 1.4m rectangular glass windowpane that is 1.0cm thick…

A: Given Data: Area of the windowpane is A = 1.7 m x 1.4 m. Thickness of the windowpane is l = 1 cm.…

Q: The temperature on Mars averages −47.2°C. What is that temperature in Fahrenheit, using  TF = 9/5TC…

A: Given data:  Temperature in Celsius scale Tc = −47.2°C Required: Temperature in Fahrenheit

Q: The rizal monument stands at exactly 13 meters tall when it is 30°C at dawn. Due to the intense heat…

A:

Q: In very humid climates where there are numerous bodies of water, such as in Florida, it is unusual…

A: It is given to have an idea about phase change and latent heat.

Q: A 10-kg iron ball is dropped onto a pavement from a height of 100 m. If half of the heat generated…

A:

Q: In an electrically heated home, the temperature of the ground in contact with a concrete basement…

A: Given information: Here, To and Ti are the temperature of the wall’s outside and inside surface…

Q: After you measure the dimensions of a plot of land with a steel tape on a hot day, you return and…

A: The metal expands and contracts according to the temperature it subjected to. The metal expands if…

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: Calculate the amount of heat loss (in Watts) through an uncovered window in a home. The temperature…

A: Given data: Calculate the area.

Q: A patient of mass 78 kilograms is spiking a fever of 105 degrees F. It is imperative to reduce the…

A: Given data as per question T1  =  105F T2   =   98.6F m   =   78kg

Q: When you step out of a swimming pool on a hot , dry day in the southwest , you feel quite chilly.…

A: When heat flows from our body, we feel chilly.

Q: In an electrically heated home, the temperature of the ground in contact with a concrete basement…

A:

Q: A 76.0-kg person suffering from hypothermia comes indoors and shivers vigorously. How long does it…

A: The shivering creates the energy of 425 W.  Therefore, from the expression of the heat transfer and…

Q: A coffee cup calorimeter contains 48.00 grams of water at 25.0°C. Two additional samples of water…

A: When heat energy is supplied to or absorbed from an object, according to the energy conservation…

Q: On a special "X" temperature scale, the ice point is at -100°X and the steam point is at 300X.  A…

A: Given value--- On a special "X" temperature scale, the ice point is at -100°X and the steam point…

Q: 20) At room temperature, a typical person loses energy to the surroundings at the rate of 62 W. If…

A:

Q: An aluminum cylinder can of diameter 20 cm is 3 mm thick at the bottom. It contains water at 60…

A: Given data The diameter of the aluminum can is d = 20 cm The thickness at the bottom is t = 3 mm =…

Q: On cold, clear nights horses will sleep under the cover of large trees. How does this help them keep…

A:

Q: A 100-WW lightbulb generates 95 WW of heat, which is dissipated through a glass bulb that has a…

A:

Q: 37. You mix 60 liters of water at 20°C with 20 liters of water at 60°C. Neglecting heat dispersion,…

A:

Q: 20°C 25°C During day time, water is colder than the sand. Which has higher specific heat capacity,…

A: Water has higher heat capacity, as it requires more heat to raise its temperature.

Q: A 60.0-kg runner expends 359 W of power while running a marathon. Assuming 12.5% of the energy is…

A: Given: The mass of the runner is 60.0 kg. The power of the body is 359 W. The percentage of energy…

Q: In an electrically heated home, the temperature of the ground in contact with a concrete basement…

A: the expression for amount of heat produced per second is,

Q: calculate the outside temperature

A: Given data:  The heat loss per unit area is: Q=10 W/m2 The thickness of the exterior wooden wall is:…

Q: 8. How many calories of heat are in 20.0 joules?   a. 83.7 calories   b. 4.78 calories…

A:

Q: The figure shows a cut-away drawing of a thermos bottle (also known as a Dewar flask), which is a…

A: The functions of the various parts are; Vacuum: It reduces the transfer of heat due to convection or…

Q: 39. The concrete wall of a building is 0.10 m thick. The temperatureinside the building is 20.0 8C,…

A: Given data K=1.1 W/m2°cL=0.1 mTi=20°cT0=0°c