Physics Chapter 1
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The current definition of the standard meter of length is based on
A) the distance traveled by light in a vacuum.
B) the length of a particular object kept in France.
C) the distance between the earth's equator and north pole.
D) the distance between the earth and the sun.
A) the distance traveled by light in a vacuum.
B) the length of a particular object kept in France.
C) the distance between the earth's equator and north pole.
D) the distance between the earth and the sun.
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Terms in this set (10)
the distance traveled by light in a vacuum.
The current definition of the standard meter of length is based on
A) the distance traveled by light in a vacuum.
B) the length of a particular object kept in France.
C) the distance between the earth's equator and north pole.
D) the distance between the earth and the sun.
A) the distance traveled by light in a vacuum.
B) the length of a particular object kept in France.
C) the distance between the earth's equator and north pole.
D) the distance between the earth and the sun.
D) the frequency of radiation emitted by cesium atoms.
The current definition of the standard second of time is based on
A) the oscillation of a particular pendulum kept in France.
B) the earth's rotation rate.
C) the duration of one year.
D) the frequency of radiation emitted by cesium atoms.
A) the oscillation of a particular pendulum kept in France.
B) the earth's rotation rate.
C) the duration of one year.
D) the frequency of radiation emitted by cesium atoms.
D) the mass a particular object kept in France.
The current definition of the standard kilogram of mass is based on
A) the mass of the sun.
B) the mass of a cesium-133 atom.
C) the mass of the earth.
D) the mass a particular object kept in France.
A) the mass of the sun.
B) the mass of a cesium-133 atom.
C) the mass of the earth.
D) the mass a particular object kept in France.
A) less than 125.
If a woman weighs 125 lb, her mass expressed in kilograms is x kg, where x is
A) less than 125.
B) greater than 125.
A) less than 125.
B) greater than 125.
B) greater than 15.
If a tree is 15 m tall, its height expressed in feet is x ft, where x is
A) less than 15.
B) greater than 15.
A) less than 15.
B) greater than 15.
A) greater than 6.5.
If a flower is 6.5 cm wide, its width expressed in millimeters is x mm, where x is
A) greater than 6.5.
B) less than 6.5.
A) greater than 6.5.
B) less than 6.5.
B) greater than 5.75.
If an operatic aria lasts for 5.75 min, its length expressed in seconds is x s, where x is
A) less than 5.75.
B) greater than 5.75.
A) less than 5.75.
B) greater than 5.75.
B) False
Scientists use the metric system chiefly because it is more accurate than the English system.
A) True B) False
A) True B) False
B) False
When adding two numbers, the number of significant figures in the sum is equal to the number of significant figures in the least accurate of the numbers being added.
A) True B) False
A) True B) False
B) False
When determining the number of significant figures in a number, zeroes to the left of the decimal point are never counted.
A) True
B) False
A) True
B) False