题目内容

To be dimensionally consistent, which of the following formula must be related where velocity [L/T], frequency [1/T], and wavelength [].()

A. velocity = frequency2*wavelength
B. velocity = frequency*wavelength
C. velocity = frequency/wavelength
D. velocity = frequency/wavelength2
E. velocity = frequency*wavelength2

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To be dimensionally consistent, distance [], velocity [L/T], and time [] must be related as follows. ()

A. distance = time/velocity
B. distance = velocity/time
C. distance = time/velocity2
D. distance = velocity*time2
E. distance = velocity*time

Using the following unit conversions: 1.00 fluid ounce = 29.573 ml, 1.00 L = 1000 cm3, density of water = 1.00g/cm3, the number of fluid ounces in a kg of water is

A. 48.8 fluid ounces.
B. 40.1 fluid ounces.
C. 33.8 fluid ounces.
D. 25.7 fluid ounces.

The population of the United States is approximately 290,000,000. Write this in scientific notation.

A. 2.9*107
B. 29*107
C. 2.90*107
D. 2.9*108
E. 2.9*109

The length 4.221 cm is added to 0.01 cm. The appropriately rounded sum is

A. 4.22 cm.
B. 4.2301 cm.
C. 4.23 cm.
D. 4.2 cm.
E. 4.231 cm.

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