Physics Physics Practice Problems Solutions Library

Units & Conversions Solutions Library

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23 solutions

Units & Conversions

Q. Hydraulic engineers in the United States often use, as a unit of volume of water, the acre-foot, defined as the volume of water that will cover 1 a...

Solved • Oct 23, 2019

Units & Conversions

Q. One hectare is defined as 1.000×104 m2. One acre is 4.356×104 ft2.How many acres are in one hectare?

Solved • Oct 29, 2018

Units & Conversions

Q. Noahs ark was ordered to be 300 cubits long, 50 cubits wide, and 30 cubits high. The cubit was a unit of measure equal to the length of a human for...

Solved • Oct 29, 2018

Units & Conversions

Q. (a) How many seconds are there in 1.00 year?(b) How many nanoseconds are there in 1.00 year?(c) How many years are there in 1.00 second?

Solved • Oct 29, 2018

Units & Conversions

Q. What is the conversion factor between ft2 and yd2?What is the conversion factor between m2 and ft2?

Solved • Oct 29, 2018

Units & Conversions

Q. A typical atom has a diameter of about 1.0 × 10-10 m.What is this in inches?Approximately how many atoms are there along a 4.0 cm line?

Solved • Oct 29, 2018

Units & Conversions

Q. Determine the conversion factor between km/h and mi/h.Determine the conversion factor between m/s and ft/s.Determine the conversion factor between ...

Solved • Oct 29, 2018

Units & Conversions

Q. The most powerful engine available for the classic 1963 Chevrolet Corvette Sting Ray developed 360 horsepower and had a displacement of 327 cubic i...

Solved • Oct 29, 2018

Units & Conversions

Q. (a) Starting with the definition 1 in. = 2.54 cm, find the number of kilometers in 1.60mi.(b) Starting with the definition 1 = 2.54 cm, find the nu...

Solved • Oct 29, 2018

Units & Conversions

Q. A square field measuring 100.0 m by 100.0 m has an area of 1.00 hectare. An acre has an area of 43,560 ft2.If a country lot has an area of 16.0 acr...

Solved • Oct 29, 2018

Units & Conversions

Q. While driving in an exotic foreign land you see a speed limit sign on a highway that reads 1.81×105 furlongs per fortnight.How many miles per hour ...

Solved • Oct 29, 2018

Units & Conversions

Q. According to the label on a bottle of salad dressing, the volume of the contents is 0.473 liter (L).Using only the conversions 1 L = 1000 cm3 and 1...

Solved • Oct 29, 2018

Units & Conversions

Q. The following conversions occur frequently in physics and are very useful.(a) Use 1 mi = 5280 ft and 1 h = 3600 s to convert 60 mph to units of ft/...

Solved • Oct 29, 2018

Units & Conversions

Q. The recommended daily allowance (RDA) of the trace metal magnesium is 410 mg/day for males. Express this quantity in g/day.For adults, the RDA of t...

Solved • Oct 29, 2018

Units & Conversions

Q. Convert the following to basic SI units. Approximate conversion factors:10 cm = 4 in; 1 m = 1 yard; 1 m = 3 feet; 1 km = 0.6 mile; 1 m/s = 2 mph(a)...

Solved • Oct 29, 2018

Units & Conversions

Q. The tropical year the time interval from one vernal equinox to the next vernal equinox is the basis for our calendar. It contains 365.242 199 days....

Solved • Oct 29, 2018

Units & Conversions

Q. Suppose your hair grows at the rate 1/32 in. per day. Find the rate at which it grows in nanometers per second. Because the distance between atoms ...

Solved • Oct 29, 2018

Units & Conversions

Q. A pyramid has a height of 481 ft and its base covers an area of 13.0 acres. The volume of a pyramid is given by the expression V = 1/3(Bh) where B ...

Solved • Oct 29, 2018

Units & Conversions

Q. A section of land has an area of 1 square mile and contains 640 acres. Determine the number of square meters in 1 acre.

Solved • Oct 29, 2018

Units & Conversions

Q. An ore loader moves 1200 tons/h from a mine to the surface. Convert this rate to pounds per second using 1 ton = 2000 lb.

Solved • Oct 29, 2018

Units & Conversions

Q. A rectangular building lot has a width of 75.0 ft and a length of 125 ft. Determine the area of this lot in square meters.

Solved • Oct 29, 2018

Units & Conversions

Q. The consumption of natural gas by a company satisfies the empirical equation V = 1.50t + 0.008t2 where V is the volume of gas in millions of cubic ...

Solved • Oct 29, 2018

Units & Conversions

Q. A house is advertised as having 1420 square feet under its roof. What is its area in square meters? (a) 4660 m2 (b) 432 m2 (c) 158 m2 (d) 132 m2 (e...

Solved • Oct 29, 2018