Why its it important, when building a terrarium, to use a clear container, such as glass? (a) so that the owner can determent whether there is enough air in the container (b) so that plants know when it is day or night, because they prefer to grow during the day (c) because plants need access to an energy source in order to produce sugars and oxygen (d) Because you wouldn’t able to look at your plants if the container wasn’t clear

Q: Radiation is emitted(a) only by glowing objects such as the Sun.(b) only by objects whose…

A: radiation

Q: a) A house walls that are 14 cm thick and have an average thermal conductivity four times that of…

A: The rate of heat conduction transfer that can take place through the material is given as,…

Q: Heat is(a) a fluid called caloric.(b) a measure of the average kinetic energy of atoms.(c) the…

A: When two materials are at different temperatures that is, they have different average kinetic energy…

Q: a) A house walls that are 13 cm thick and have an average thermal conductivity four times that of…

A: Given: Distance between the walls, d = 0.13 m. Thermal conductivity of the material, k = 4 x kgw = 4…

Q: What is the mass of this iceberg, given that the density of ice is 917 kg/m3?  kg (b) How much heat…

A:

Q: Jim is cooking sopas (chicken noodle soup) for Noche Buena. He finished early in the afternoon and…

A: From newton's law of cooling  dTdt=kT-TS where k is the proportionality constant  dTT-TS=kdt…

Q: 1) The walls of a house are 24 cm thick and have an average thermal conductivity four times that of…

A: We need to calculate rate of heat conduction and the heat conducted in 5 min.

Q: At the bottom of an old mercury-in-glass thermometer is a 54-mm³ reservoir filled with mercury. When…

A:

Q: Students on a spring break picnic bring a cooler that contains 5.3 kg of ice at 0.0°C. The cooler…

A:

Q: Calculate the amount of heat loss for a 5.08 cm thick glass wall when its temperature changes from…

A: Given, Thickness, t = 5.08 cm = 0.0508 m Temperature changes from 20200C from 400C so ΔT = 200C Time…

Q: Example: A water tank with a wall thickness of 10 mm and a water temperature of 90 "C.) Calculate…

A:

Q: In order to lose 1 pound per week, you need to reduce your daily intake by 500 Calories per day. For…

A: In order to lose one pound per week, you need to create a calorie deficit of 500 calories per day.…

Q: At the bottom of an old mercury-in-glass thermometer is a 39-mm reservoir filled with mercury. When…

A: Expansion in the mercury column

Q: Assuming the cube is made of iron, what would the volume of the cube be right before it was placed…

A: 1) The change in cube’s volume due to heating can be represented as, Here, V0, Lir, T, and α…

Q: a) A house walls that are 14 cm thick and have an average thermal conductivity four times that of…

A: Given, Thickness of wall  d = 14 cm = 0.14 m Surface area of wall A = 1200000 cm2 = 120 m2…

Q: One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a…

A: Given, di attice= 15 cm= 0.15 mdf attice= di+0.07800000000000005=0.07800000000000005+0.15df…

Q: A house walls that are 23 cm thick and have an average thermal conductivity two times that of cork.…

A:

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 house walls that are 11 cm thick and have an average thermal conductivity two times that of cork.…

A:

Q: A house walls that are 16 cm thick and have an average thermal conductivity two times that o surface…

A: GivenThickness of house walls, ∆x=16 cm=0.16 mAverage Thermal conductivity, kavg=2×kcSurface area of…

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: The windows on the Apollo Command Module were double-paned tempered silica glass with an additional…

A: The formula to convert temperature from Fahrenheit to Celsius is given by…

Q: Occasionally, huge icebergs are found floating on the ocean's currents. Suppose one such iceberg is…

A: Volume = 148000 * 39100 * 247 m3  = 1.43 * 1012 m3 Mass = volume * density  = 1.43 * 1012 * 917  =…

Q: Two walls are made of the same type of concrete and have the same temperature difference between…

A: No. of walls = 2  type of concrete = same  temp. differnce is same in both inside and outside of…

Q: The primary and secondary mirrors of a space telescope are assembled using zerodur spacers in an…

A:

Q: A house walls that are 24 cm thick and have an average thermal conductivity two times that of cork.…

A: Given data: The thickness of wall is x=24 cm. The surface area is A=950000 cm2. The inside…

Q: Question 4. A glass windowpane in a home is 0.42 cm thick and of 1.0 m x 2.0 m. On a certain day,…

A: Given: thickness L =0.42 cm =0.42*10-2 mdimensions = 1.0m X 2.0 m; area A = 2 m2indoor temperature…

Q: 1. (a) The number of kilocalories in food is determined by calorimetry techniques in which the food…

A:

Q: Someone claims that the air space in a double-pane window enhances the heat transfer from a house…

A: We would disagree with this recommendation since the air space introduces some thermal resistance to…

Q: Hot air is to be cooled as it is forced to flow through the tubes exposed to atmospheric air. Fins…

A: Hot air can be cooled when it is forced to flow through the tubes exposed to atmospheric air. Fins…

Q: Assume a coffee mug is completely filled with creamed coffee.  Assume both of their temperatures are…

A: The cooling law be defined as,

Q: The fins attached to a surface are determined to have an effectiveness of 0.9. Do you think the rate…

A: Effectiveness of fins is the ratio of heat transfer with fins to heat transfer without fins.

Q: A pond in winter has a layer of ice 5cm thick. The temperature of the air above the ice is -10C and…

A: (i) The amount of heat transferred is Q=kiceATh-Tltd=2.2 WmC 1 m20--10° C1 s5×10-2 m=440 J

Q: i)  Calculate the rate of heat conduction through house walls?          (ii) How many 200W room…

A: The heat conduction rate can be represented as, Here, kw, kC, A, Th, Tc, and d represent the wall’s…

Q: student put a cap on a bottle, trapping room-temperature air inside. He put the bottle in the…

A: A student put a cap on a bottle, trapping room-temperature air inside. He put the bottle in the…

Q: m thick. (a) How much heat in joules would be required to melt this iceberg (assumed to be at 0 °C)…

A: length, L = 138 km width, w = 28.1kmheight, h = 247 m density, d = 917 kg/m3 Annual energy = 9.3 x…

Ideal Gas Law

Ideal gas law states that the product of pressure and volume of a gas directly varies with the product of the number of moles, the universal gas constant, and the temperature of the gas.