A house is to be maintained at 20°C when the outside air is at -25°C. It is determined that 1800 |KJ is required each minute to accomplish this.
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Answer the following questions correctly and please provide complete and readable solutions. Please Explain.
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- In the previous question, it was necessary to perform the following steps. Select all that apply. Hint: Incorrect responses will be penalised. Convert units by multiplying by 3600. Convert units by dividing by 3600. Convert units by dividing by 1000. There is no need to convert units because the mass is in kg. Convert units by multiplying by 1000.Please help me answer parts A. and B. of this question.One mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in room temperature. Using those numbers, answer the following questions: a) What is the mass of a single gold atom in kg? b) Assume that gold atoms sit in a perfect cubic crystal structure. Estimate the distance between two gold atoms in meters. c) If we have a gold cube of 6 cm on each side, how many atoms can we fit along the edge of each side of the cube? d) What would be the mass, in kilograms, of the gold cube we discussed in part (c) (measuring 6 cm on each side)?
- In the process of using the scientific method, a researcher: O Directly tests both the null and alternative hypotheses. O Directly tests only the alternative hypothesis because this is the hypothesis of interest. O Directly tests only the null hypothesis because this is the hypothesis of interest. O Directly tests only the null hypothesis because the null hypothesis leads to a specific prediction that can be compared with data. O Can not directly test either hypothesis.Which of the following correctly describes A=90090 in scientific notation (with correct sig figs)? More than one answer MAY be correct. In these answers "E#" represents 10 raised to the power of #. 9.0090E5 None of the other answers is correct. 9.009E4 O 9.009E5 O 9.0090E3Consider two enclosed cylindrical tanks filled with air. Tank A is 8 ft tall while tank B is 7 ft tall, their diameter is both 6 ft. If the pressure and temperature inside both tanks are maintained equal, how much mass of air is inside tank B if tank A is filled with 3,872 Ibm of air? Solve using standard English units. Express your answer in slugs and round off to the nearest hundredths.
- Provide your calculations, including all relevant steps are included and your units are labeled. The plane carrying the supplies will be cruising at a constant velocity of 250 miles per hour relative to the ground and at a height of 2,650 meters above the target site. Using this information, create a supply drop plan including all required information and calculations outlined below. As you are completing your supply drop plan, remember that correct SI units are a required component of your calculations and descriptions. A) Provide your calculations, including all relevant steps are included and your units are labeled. B) Describe the components of the kinematics equations used in your initial calculations below.10. Ā = -2â + -3ŷ and B = -4â + -4ŷ. Calculate R = Ã+B. Calculate 0, the direction of R. Recall that 0 is defined as the angle with respect to the +x-axis. A. 49.4° B. 130.6° C. 229.4° D. 310.6°2) Rewrite the following expression in proper scientific notation as in the example on page 1. Note that here you also have to take care of the number of significant digits. ((140.88)(18.775)(60110)(7.76))/((0.00024)(401×10^8)(88.0))= 3) Solve the above expression using your calculator. Round your answer to the appropriate number of significant digits. Explain how you round it.
- I need the answer as soon as possibleThe population of India can be modeled by the function P(t) = 1462(1 +0.0177) where P(t) measures the population in millions andt represents the number of years since 2000. 1. Using this model, what was the population of India in 2009? 2. Predict the population of India in 2019. 3. If this growth rate continues, in what year will the population of India reach 2 billion people? Hint:one side of the box in m 0.0196 Question 4 A loaf of bread with a volume 3,925 cm³ and density 0.248 g/cm³ is crushed in the bottom of a grocery bag into a volume of 2,254 cm³. What is the density (g/cm³) of the mashed bread? % B H N & M 8 K alt hp fio ctri f12 [ ✈ ins 6 pts pause prt sc