Question Physics: Electrostatic Force and Gravitational Force

A small piece of paper weighs 10ˆ-2 gm. The weight of earth is 10ˆ24 kg. The glass rod with a net charge of 10-6C is brought near the paper which gets stuck to the glass rod and one can lift the stuck paper against the gravitational pull of the earth. Compare the force due to gravity on piece of paper and electrostatic force between paper and glass rod.

After a dismal start to 2019, the U.S. economy seems to be speeding up in the spring. Growth has appeared to speed up towards the end of the 1st quarter, and after such signs, economists have been ratcheting up their estimates for 1st quarter GDP. Positive areas include a resurgence in consumer spending, a declining U.S. trade deficit, and a solid labor market.

Does the United States economy seem to be safe from a recession in the near future?

The ground temperature a few meters below the surface is fairly constant throughout the year, and is near the average value of the air temperature. In areas in which the air temperature drops very low in the winter, the exterior unit of a heat pump designed for heating is sometimes buried underground in order to use the earth as a thermal reservoir. Why is it worthwhile to bury the heat exchanger, even if the underground unit costs more to purchase and install than one above ground?

Many consumers pay careful attention to stated nutritional contents on packaged foods when making purchases. It is therefore important that the information on packages be accurate. A random sample of n = 12 frozen dinners of a certain type was selected from production during a particular period, and the calorie content of each one was determined. (This determination entails destroying the product, so a census would certainly not be desirable!) Here are the resulting observations, along with a boxplot and normal probability plot. (To obtain the dataset for your analysis software, go to the Book Companion Website.)

A vertical boxplot has a vertical axis labeled "Calories" with values from 223 to 267. The top whisker is approximately at 265.0, the top-most edge of the box is near 253.0, the line inside the box is approximately 244.5, the bottom-most edge of the box is near 236.0, and the bottom whisker is at approximately 225.0.

(c) Carry out a formal test of the hypotheses suggested in part (b). (Use Table 4 in Appendix A. Use α = 0.05. Round your test statistic to two decimal places and your P-value to three decimal places.)

P=  

Exercise 9-14 Prepare a Flexible Budget Performance Report [LO9-4]

Lavage Rapide is a Canadian company that owns and operates a large automatic car wash facility near Montreal. The following table provides data concerning the company’s costs:

For example, electricity costs are $1,200 per month plus $0.09 per car washed. The company expects to wash 8,400 cars in August and to collect an average of $6.30 per car washed.

The actual operating results for August appear below.

Required:

Prepare a flexible budget performance report that shows the company’s revenue and spending variances and activity variances for August. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.)

Exercise 9-14 (Algo) Prepare a Flexible Budget Performance Report [LO9-4] Lavage Rapide is a Canadian company that owns and operates a large automatic car wash facility near Montreal. The following table provides data concerning the company’s costs: Fixed Cost per Month Cost per Car Washed Cleaning supplies $ 0.60 Electricity $ 1,100 $ 0.10 Maintenance $ 0.15 Wages and salaries $ 4,900 $ 0.30 Depreciation $ 8,100 Rent $ 2,200 Administrative expenses $ 1,800 $ 0.03 For example, electricity costs are $1,100 per month plus $0.10 per car washed. The company expects to wash 8,200 cars in August and to collect an average of $6.00 per car washed. The actual operating results for August are as follows: Lavage Rapide Income Statement For the Month Ended August 31 Actual cars washed 8,300 Revenue $ 51,300 Expenses: Cleaning supplies 5,420 Electricity 1,890 Maintenance 1,470 Wages and salaries 7,720 Depreciation 8,100 Rent 2,400 Administrative expenses 1,946 Total expense 28,946 Net operating income $ 22,354 Required: Prepare a flexible budget performance report that shows the company’s revenue and spending variances and activity variances for August. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.)

Lavage Rapide is a Canadian company that owns and operates a large automatic car wash facility near Montreal. The following table provides data concerning the company’s costs:

For example, electricity costs are $1,000 per month plus $0.06 per car washed. The company expects to wash 8,300 cars in August and to collect an average of $6.80 per car washed.

The actual operating results for August appear below.

Required:

Prepare a flexible budget performance report that shows the company’s revenue and spending variances and activity variances for August. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.)

ounts as positive values.)

Exercise 9-9 Prepare a Report Showing Revenue and Spending Variances [LO9-2]

Lavage Rapide is a Canadian company that owns and operates a large automatic car wash facility near Montreal. The following table provides data concerning the company’s costs:

For example, electricity costs are $1,200 per month plus $0.15 per car washed. The company expects to wash 9,000 cars in August and to collect an average of $4.90 per car washed.

The actual operating results for August are as follows:

Required:

Calculate the company's revenue and spending variances for August. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values. Do not round intermediate calculations.)