Question 14 of 20
1 Point
Which of the following best describes significant figures?
O
A. The exactness of a measurement
O
B. The digits in a quantity that are known with certainty, plus one
estimated digit
C. How close a measured quantity is to its actual value
O
D. An approximate guess or rough calculation

The answer is C. How close a measured quantity is to its actual value

The significant figures of a number are digits that carry meaning contributing to its measurement resolution. The basic concept of significant figures is often used in connection with rounding. Rounding to significant figures is a more general-purpose technique than rounding to n decimal places, since it handles numbers of different scales in a uniform way.

d) physical means can be used to separate the components of air.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.