Besides energy savings, what are other advantages that observation of daylight saving time may bring?
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Besides energy savings, what are other advantages that observation of daylight saving time may bring?
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- The calorie is defined as the amount of heat required to raise the temperature of 1 gram of water by 1C. Also, the energy content of food is typically expressed in Calories, which is equal here to 1000 calories. Convert the results of the previous problem to calories (1 Btu = 252 calories).1.How many days will it take you to consume a 10-m^3 of water if your daily consumption is 30 liters?2.How many tiles would be needed to cover a 30ftx28ft floor area if a tile measures 30cmx30cm?How many tiles will you buy?3. How many pieces of plywood would be used to cover the ceiling in #2 if the measurement of the ceiling is the same as the floor area and if a plywood measures 1.22 m x 2.44 m? How many pieces of plywood will you buy?4.An Aquarium measures L=5ft, 3ft and H= 20 inches.How many liters will it contain if it will be filled with water until 2 inches below its brim?5.An atom has a diameter of 3.5x10^-10m.What is the measurement in a.)cm and b.) nm6.What is the equivalent speed of light which is 299792458.0 m/s to:a)km/hb)nm/usc)cm/nsd)um/s7.A book measure L=10 inches, W= 8 inches, and H=2 inches.How many of these can be packed in a box that measures L=50cm,W=50cm, and H=60cm if it is to be filled up to the maximum number (this means that no book or any part of it can be…Which of the following statements is incorrect? An energy budget can be based on historical data, although this is usually unsatisfactory There is no standard formula for to calculate electricity costs The electricity consumption of air-conditioning can comprise of 80%-90% of the load of a building Economic cycle operation refers to the use of favourable environmental conditions
- How to convert kPa to meter of H2O?The lifetime of a lightbulb in a certain application is normally distributed with mean μ = 1400 hours and standard deviation σ = 200 hours. a.What is the probability that a lightbulb will last more than 1800 hours? b.Find the 10th percentile of the lifetimes. c.A particular lightbulb lasts 1645 hours. What percentile is its lifetime on? d.What is the probability that the lifetime of a lightbulb is between 1350 and 1550 hours?Water is pumped into a storage tank from a well delivering 20.0 gallons of water in 30.0 seconds through a pipe of 1.in2 cross-sectional area. What is the average velocity of the water in the pipe as the water is pumped from the well?
- Explain why it is said that the volume of water in the hydrologic cycle is almost constant? (10-12 sentences).The speed of the tip of the minute hand on a town clock is 1.75 103 m/s. (a) What is the speed of the tip of the second hand of the same length? (b) What is the centripetal acceleration of the tip of the second hand?A room has a width of 13.3 feet, a length of 14.3 feet, and a ceiling height of 13.2 ft. The average flow rate for this room's air conditioning unit is 4 m3/s. How many hours will it take for the air conditioner to cycle the volume of air in the room? Please do not include units in your answer. Assume your answer has at least 2 sig figs.
- Most car owners drive their cars an average of 12,000 kilometers a year. Assuming a 10 km/L gas consumption rate, determine the amount of fuel consumed by 150 million car owners on the following time bases:a. average daily basisb. average weekly basisc. average monthly basisd. average yearly basise. over a period of ten yearsExpress your results in gallons and liters.Fluid Mechanics Show that the control volume for air at 20 degress Celcuis is ~ a cube that has length 10-1 micron on a side, if the requirement for control volume magnitude be that it contains 106 molecules of air. Assume the molar volume of air is 25 liters per mole.Convert 16 ft per second to kilometers per hour. Step by step.
