15 The surface temperature on Venus may approach 735 K. What is this temperature in degrees Celsius? type your answer... The temperature on Mercury may drop to -263° F at night. What is this temperature in degrees Celsius? type your answer... Spointe I
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- Suppose you require 2500 food Calories per day. a. What is your average power, in watts? b. How much energy, in joules, do you require from food in a year? Counting all forms of energy (such as gasoline, electricity, and energy for heating), the average person consumes about 350 billion joules of energy each year. Compare this value to the energy needed from food alone. a. What is your average power, in watts? Approximately 121 watts (Round to the nearest whole number as needed.) b. The energy required from food is approximately billion joules per year. (Round to the nearest tenth as needed.)5. The clouds that surround Venus are so thick that the planet actually absorbs less sunlight than the Earth. Nevertheless, Venus has a surface temperature of more than 400 degrees Celsius. Which of these best explains the high surface temperature? Da. The bright surfaces of the clouds reflect sunlight back on the planet. Ob. The strong winds in the atmosphere produce friction Oc. The thick clouds in the atmosphere prevent heat from escaping Od. The sulfuric acid in the clouds releases heat energy. e.A sphere of radius 0.50 m, temperature 25.0 °C, and emissivity 0.850 is located in an environment of temperature 75.0 °C. a. At what rate does the sphere emit thermal radiation? b. What rate does the sphere absorb thermal radiation? c. What is the sphere’s net rate of energy exchange?
- 5. The clouds that surround Venus are so thick that the planet actually absorbs less sunlight than the Earth. Nevertheless, Venus has a surface temperature of more than 400 degrees. Celsius. Which of these best explains the high surface temperature? Da. The bright surfaces of the clouds reflect sunlight back on the planet. Ob. The strong winds in the atmosphere produce friction c. The thick clouds in the atmosphere prevent heat from escaping d. The sulfuric acid in the clouds releases heat energy. e.5. The number densityN/Vof gas molecules at a certain location in the space above our planetis about 1.00×1011m−3, and the pressure at the same location is 2.75×10−10N/m2. Whatis the temperature there?Consider an ideal gas with an absolute temperature of ?1.T1. To what temperature would the gas need to be heated to double its pressure? Express the answer in terms of ?1.T1. ?2= Consider an ideal gas with a volume of ?1.V1. To what volume would the gas need to be compressed to double its pressure? Express the answer in terms of ?1.V1. ?2=V2=
- nent 7 Heat transfer, rev 1, 2022.xlsx (1.58 MB) Page 2. Styrofoam, used for insulation, has a thickness of 25.0 mm. The temperature on one side of the styrofoam wall is 12.0 °C and 22.5 3. °C on the other side. How much heat (J) is transferred in one hour through each square meter of the styrofoam wall to 3 sig figs? In real construction there will be bricks or concrete along with the styrofaom as you can see in the picture. Only consider the styrofoam here.Q5. Given air , gauge pressure Pg=378.675KPag, t=21 degrees C and R=287Joules/kg-K 1. Absolute pressure KPaa? a. 450 b. 460 C. 470 d. 480 2. Absolute temperature in degree K? a. 264 b. 274 c. 284 d. 294 3. mass density in kg/cu.m.? a. 5.40 b. 5.69 C. 5.89 d. 6.09 4. Specific weight in N/cu.m.? a. 55.82 b. 56.83 c. 57.82 d. 58.82A. 1.00 kg of liquid nitrogen (N2) at its boiling/vaporization point (-195.81 °C) is poured into a large reservoir of liquid water at it fusion/melting point (0.00 °C). How many kilograms of ice (at 0.00 °C) will the evaporation of the liquid nitrogen create (mice = ?)?
- (a) In the deep space between galaxies, me density of atoms is as low as 106atoms/m3, and me temperature is a frigid 2.7 K. What is me pressure? (b) What volume (in m3) is occupied by 1 mol of gas? (c) If this volume is a cube, what is the length of its sides in kilometers?In lab we determined the specific heat of several cubes of metal. One of those cubes was lead which had a specific heat of 0.13 J/g oC. Let’s imagine a thought experiment where we drop a 100 g piece of lead off the roof of a 10 meter tall building. A. How much will the temperature rise for the lead when it hits the ground? B. How much potential energy does the lead have at the top of the roof? C. How much kinetic energy does the lead have just prior to striking the ground? Assume that the mechanical energy is conserved and transferred to the lead to be thought of as heat, Q. Using Q = mc(T-To), solve for (T-To), the change in temperature.b. Check your sol 3. Newton's law of cooling relates the temperature and the time of a cooling substance. A pan of cookies is removed from a 350 degree oven and put on a counter to cool. X-70 T(x) = -2.5log2.72 ( is used to find the amount of time (in minutes) that has passed since the cookies were taken out of the oven as a function of x, the current temperature of the cookies in ° Fahrenheit. What will be the temperature of the cookies after waiting for 5 minutes? %3D 280 151