# physics

In 2003, New Zealand households consumed a total of 153.6E+15 J of energy (the largest amount of any sector in the New Zealand economy). How many days would it take for the sun to put that amount of energy onto a region 20.0 km by 20.0 km (0.15 percent of New Zealand's total land area)? Assume that energy from the sun arrives at the surface of the earth with an average intensity of 1000.0 W/m2

1. 👍 0
2. 👎 0
3. 👁 63
1. Multiply 1000 W/m^2 by the area in square meters. (20*10^3 m)^2
That would be the amount of energy received per second by the country's solar panels.

P = 4.00*10^11 W (Note that this power is only delivered during daylight, close to the middle of the day, on relatively clear days.)

Number of seconds to receive 153.6*10^15 J of energy (total national household demand), at that power, is
P = 3.84*10^5 s

That equals 4.44 days. Since the sun doesn't shine all day long, a more accurate value would be 10 days.

1. 👍 0
2. 👎 0
posted by drwls

## Similar Questions

1. ### health

Can someone help explain these directions?? For the energy-yielding nutrients, please convert the amount (grams) consumed to calories.  This can be done by multiplying the amount of that nutrient consumed by the respective

asked by Anonymous on June 20, 2014
2. ### managerial economics

BigBook is a monopolist book publishing company, which sells books in Australia and New Zealand. Assume there is a 1:1 exchange rate between Australia and New Zealand. The inverse demand equations for Australia and New Zealand are

asked by matherik on September 7, 2008
3. ### Science

When energy changes forms, the total amount of energy is conserved. However, the amount of useful energy is almost always less than the total amount of energy. Explain the energy conversions and unwanted energy that might be

asked by Elijah on January 5, 2011
4. ### Math

In a survey of 380 households regarding the ownership of VCRs and DVD players, the following data was obtained: ​ 350 households own one or more VCRs. ​180 households own one or more VCRs and one or more DVD players. ​13

asked by Kal Jay on October 28, 2016
5. ### statistics

Data from the latest census was analyzed. It was determined that one-parent households spend less on food away from home that do two-parent households. The mean amount spent by 30 one-parent households is \$1876 and the standard

asked by Mike on April 18, 2012
6. ### Statistics

Data from the latest census was analyzed. It was determined that one-parent households spend less on food away from home that do two-parent households. The mean amount spent by 30 one-parent households is \$1876 and the standard

asked by Mike on April 4, 2012
7. ### Statistics

Option Seminar 2 5.19) According to data from the U.S. Energy information Administration, the 60.0 million U.S. households with personal computers were distributed as shown here with regard to geographic location and access to the

asked by Lesliam on July 20, 2009
8. ### chemistry

so we did a chem lab and one of the questions is to tabulate the amount of S2O3 consumed in moles and times (sec) for each run. I'm just not sure how to calculate the amount consumed. Can someone please explain how?

asked by Anonymous on February 1, 2014
9. ### what does this mean???

Students must make a choice concerning their daily practices that will reduce the amount of energy that is consumed in their practice. This must be clearly illustrated using fotor, including the choice made, types of energy

asked by anonymous on March 6, 2015
10. ### Social Studies

Which of the following statements describes a difference between the political systems of Australia and New Zealand? A. Australia is a constitutional monarchy; New Zealand is a democracy.*** B. Australia's entire territory is

asked by Knifes Out on May 7, 2019

More Similar Questions