About how many parts per million (ppm) of carbon dioxide were in the atmosphere in... 1959? Student response 1975? Student response. 1985? Student response. 1995? Student response. 2019? Student response
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About how many parts per million (ppm) of carbon dioxide were in the atmosphere in...
1959? Student response
1975? Student response.
1985? Student response.
1995? Student response.
2019? Student response.
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- A fresh meat containing 45% of moisture is roasted in an oven in order to remove 95% of its moisture content. Calculate:a) The mass of water remove per 100 kg of the fresh meat.b) The mass of roasted beef.3. The data below shows the environmental temperature at different height: Altitude (m) 0 50 Temperature (°C) 24.00 23.75 100 23.50 150 200 23.25 23.00 Above 200 m, the ambient temperature increases at the rate of +20 °C km*1. (a) A 100-m tall stack emits a plume whose temperature is 24.50°C. Using graphical method and with justification, predict the maximum mixing height of the plume. (b) Describe the type of plume emitted under the conditions mentioned in 3(a).5. A weather balloon is released and later reports a temperature of 8 °C and pressure of 0.900 atm. The surface temperature was 16 °C and pressure 0.995 atm. Determine the atmosphere stability class, assuming the temperature profile is constant.
- If the ambient alr temperature is -6°C and the wind is blowing at 60 km/h, the temperature will feel like it is °C. Type your answer. PreviousHW1. Due: 02/08/2024. 1. The density of dry air at p = 1.0 bar and T =300 K is 1.161 kg/m³. Assuming it consists entirely of N₂ and O₂ and using the ideal gas law, determine the amount of each gas in moles in a volume of 1 m³ and their mole fractions. 2. (a) Calculate the amount of gas in moles per cubic meter of atmosphere at p = 1 atm and T = 298 K using the ideal gas equation. (b) The atmospheric content of CO₂ is about 360 ppmv (parts per million by volume). Assuming a pressure of 1.00 atm, estimate the amount of CO₂ in a 10.0 km layer of the atmosphere at the surface of the earth. The radius of the earth is 6370 km. (The actual amount of CO₂ in the atmosphere is about 6.0 x 1015 mol.) 3. The van der Waals parameter b is a measure of the volume excluded due to the finite size of the molecules. Estimate the size of a single molecule from the data given below. STATES OF MATTER AND THE VAN DER WAALS EQUATION Table 1.1 Van der Waals constants a and b and critical constants T.. p, and V…The diagram below shows a weather instrument used to determine relative humidity. 20 O T.......I....I.... ....L....... 40 10 30 50 Wet bulb 20 40 °C Dry bulb 10 30 50 What is the relative humidity? 1. 40% 2. 36% 3. 8% 4. 4%
- 4. Taos Ski Valley advertises a vertical drop of 3,281 feet. Use Laplace's law of isothermal atmospheres to calculate the change in air pressure between the top and the bottom. Assume the temperature is 25 °F. The pressure at the base of the ski area is 0.70 atm.5) In the Swiss Alps, the air pressure is relatively low due to the high elevation. Assuming an air pressure of 75 kPa and a temperature of 4°C, how many air molecules will there be in a 1 liter (10-3 m³) bottle? a) 1 x 1022 b) 2x 1022 c) 3 x 1022 d) 4 x 1022 e) 5 x 1022 f) 6 × 1022 6) An alphorn plays a sustained tone at 29 Hz. A second, smaller alphorn produces 120 beats per minutes when played with the 29 Hz instrument. What is the frequency of this second alphorn? a) 2 Hz b) 27 Hz c) 29 Hz d) 31 Hz e) 120 Hz f) 149 Hz Short Answer Question Model an alphorn as an open-closed pipe with a first harmonic (m=1) frequency of 29 Hz. . Sketch the first (m=1) harmonic showing it at two different times. ⚫ Determine the wavelength (in m) of the first harmonic. . What is the length of the pipe (in m)? ⚫ Calculate the frequency (in Hz) of the next two harmonics.iWhat type of air mass do you think would be responsible for cold, dry winter weather in Ireland? a.mT b.cT c.cP d.mP iiWhich of the following statements about specific humidity is TRUE? Select one: a.specific humidity changes as a given mass of air expands b.specific humidity is also known as relative humidity c.specific humidity is measured in grams of water vapour per kilogram of air d.specific humidity changes as a given mass of air is compressed
- Late at night the driver had hidden gasoline tank filled. The temperature of the gasoline is 23°C. The tank held is 60 liters. The next day, because of the summer season the gasoline was warmed to 60°C. How much gasoline is overflowed? Use ɣ=950 x10-6 C-1Assuming there is no feedback and greenhouse effect, estimate Earth's average temperature when there is a 5W/m² increase in solar radiation. (Use the solar radiation in two-box model)18. In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 40.0 km wide, and 250 m thick. (a) What is the mass of this iceberg, given that the density of ice is 917 kg/m?? (b) How much heat transfer (in joules) is needed to melt it? (c) How many years would it take sunlight alone to melt ice this thick, if the ice absorbs an average of 100 W/m?, 12.00 h per day?