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29 items are filed under this topic.
Conversions, feet, kilometers and acres 2019-06-10
From Erika:
A lake has 113 feet deep and an area of 115 acres, what is the volume of the lake in cubic kilometer?
Answered by Harley Weston.
Solar cells 2018-02-12
From karla:
Solar (photovoltaic) cells convert sunlight directly into electricity. If solar cells were 100% efficient, they would generate about 1000 watts of power per square meter of surface area when exposed to direct sunlight. With lower efficiency, they generate proportionally less power. For example, 10% efficient cells generate 100 watts of power in direct sunlight. Suppose you want to supply 22 kilowattss of power to a house by putting solar panels on its roof. For solar cells with the average power of 49 watts per square meter of solar panels, how many square meters of solar panels would you need? Assume you can make use of the average power from the solar cells
Answered by Penny Nom.
Speed in kilometers per hour 2017-12-21
From Cody:
if a train travels 400 meters in 30 seconds how many kilometers per hr is it traveling
Answered by Penny Nom.
How many kilometers to a longitudinal degree? 2014-06-19
From cherrielyn:
Assuming that earth is a sphere of radius 6380 km, what is the difference in the latitudes of two cities 270 miles apart positioned on the same meridian?

Thank you in advanced po! :)

Answered by Robert Dawson.
The difference in the latitudes of Lynchburg and Myrtle Beach 2012-01-26
From Sarah:
Assuming that the earth is a sphere of radius 6378 kilometers, what it is the difference in the latitudes of Lynchburg, Virginia and Myrtle Beach, South Carolina, where Lynchburg is 400 kilometers due north of Myrtle Beach?
Answered by Robert Dawson.
The difference in latitudes of two cities 2012-01-18
From Renee:
Assuming that the earth is a sphere of radius 6378 kilometers, what is the difference in latitudes of two cities, one of which is 600 kilometers due north of the other?
Answered by Robert Dawson.
Converting kilograms to cubic metres 2010-07-16
From Ilai:
I want to convert kg to cubic metre
Answered by Penny Nom.
Miles per hour to kilometers per second 2009-02-17
From Tamara:
If a car goes 60 miles in an hour how many kilometres will it go in a second?
Answered by Penny Nom.
650g+2kg+195g=how many kg 2008-12-11
From christian:
650g+2kg+195g=how many kg
Answered by Penny.
Metres and miles 2008-08-18
From Bill:
I enter a race that is 10,000 meters long,how many miles do i have to run?
Answered by Victoria West.
Kilometers per liters to miles per gallon 2008-06-26
From margaret:
we travelled 130 kilometers on 10 liters of gas. How many miles to the gallon did I get
Answered by Penny Nom.
Watts and kilowatts 2008-06-23
From Kenneth:
Hello: Here is my question: Find the kilowatt-hours of electricity used by a light bulb with a rating of 60 watts if the light is used for 10 hours.
Answered by Stephen La Rocque and Harley Weston.
How many meters/kilometers/millimeters would that be? 2008-01-17
From chantal:
if a ocean/lake/river is 250meters from where you are, how long would it take to get to shore? how many meters/kilometers/millimeters would that be?
Answered by Penny Nom.
Converting mass and volume of water 2007-05-10
From Shian:
Hello please help, I just can't seem to get the convertion thing and my mom tried to help but I still don't get it. How many grams does 1 milliliter of water weight? I was told 1g. How many grams does 0.1 liter of water weight? I was told 0.1g. Can you tell me if the answers given are correct with an explaination that I can understand? Thank you.
Answered by Stephen La Rocque.
Centimeters to cubic meters and grams to kilograms 2007-02-14
From Colleen:
A box of balls measures 120cm by 20cm by 20cm and weighs 48 g.
One thousand boxes = x cubic meters and weighs x kilograms.
Also, one million boxes = x cubic metes and weighs x kilograms.
One billion boxes = x cubic meters and weighs x kilograms. Solve for x.

Answered by Stephen La Rocque.
Kilowatts and Horsepower 2006-11-03
From Michael:
How many Kilowatts=1 Horsepower or Horsepower=1 Kilowatt?
Answered by Stephen La Rocque.
A metric prefix table 2004-03-07
From April:
Can you tell me what the scale is for nano, micro, mega, kilo, etc.... I know that mega is 10 to the sixth power but I can't remember the other ones.
Answered by Penny Nom.
A radio controled car 2003-06-08
From Robert:
I have a radio controled car (scale size 1/43). This car can travel 490 ft. per minute. I would like to know how fast that is at that scale size in miles per hour (and Kilometers per hour)?
Answered by Penny Nom.
______cm=0.048km 2003-02-27
From Antonette:
Answered by Penny Nom.
Kilometers to miles 2002-10-09
From A student:
how many miles are in 16 kilometers?
Answered by Leeanne Boehm.
A million sheets of 30 cm long paper 2002-09-15
From Jennifer:
if you put a million sheets of 30 cm long paper end to end, how many kilometer long would the paper be from begining to end?
Answered by Penny Nom.
The 20 kilometer walk 2002-08-20
From A student:
Answered by Penny Nom.
Conversion of units 2002-04-29
From Matt:
I am having trouble finding a workable equation for the following problem, particularly the conversion of two systems of measurement.

The question states that there are 27 grams of salt in a kilogram of seawater. And it asks how many tonnes (1 tonne = 1000 kilograms) of salt are there in one cubic kilometer of ocean. It also says that the density of seawater is 1.1 g/cm3.

What is the equation and how do I figure out how many kilograms there are in a cubic kilometre?

Answered by Harley Weston.
Miles and kilometers 2002-01-22
From Dennis:
I'm in the middle of purchasng a vehicle and it was built in Canada. Therefore it is in kilometers and not in miles. I forgot how many kilometers are in a mile. It registers as 183,049 kilometers.
Answered by Penny Nom and Judi McDonald.
Metric units 2001-10-25
From Kelly:
i am helping my kids out with school work and don't remember meters,centimeters decimeters and all those. We have to change meters into cm.....and so on..........is there a place on the web to look for some kind of help in these questions
Answered by Penny Nom.
300 pounds 2001-09-12
From Cassie:
Answered by Penny Nom.
Conversions 2001-01-24
From Tanya:
I have 2 questions
  1. covert 628 kilometers to miles.(round off your answer to two decimal places.)

  2. a new clerk in your office is to earn $200 per week. If she works 30.5 hours each week, what is her hourly rate? (round off your answer to the nearest hundreth, that is, to the nearest cent.)

Answered by Penny Nom.
Converting Metric Measurements 1999-04-08
From Rick:
Do you have any simple explanations for converting Metric measurements to other Metric measurements?? What helpful hints do you also have for a 5th Grader...
Answered by Penny Nom.
Nickles on the Highway 1998-09-22
From Ronnie Mac Donald:
How many nickels would it take to cover 226km of highway,each nickel is 2cm in diameter?
Answered by Penny Nom.



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