Physics Chapter on Measurements and Constants

It is kg.

The error in determining the volume of a sphere would be 8%.

The percentage error is approximately 0.28%.

<p>It has six significant figures.</p> Signup and view all the answers

<p>The dimensions of b are [LT-2].</p> Signup and view all the answers

<p>The different types of quantities in physics include scalar quantities, which have magnitude only, and vector quantities, which have both magnitude and direction.</p> Signup and view all the answers

<p>You can measure the distance to the Moon using the parallax method by observing the Moon from two different points on Earth and calculating the angle of displacement, then applying trigonometry.</p> Signup and view all the answers

<p>The rules for determining significant figures include considering all non-zero digits as significant, any zeros between significant digits as significant, and leading zeros as non-significant.</p> Signup and view all the answers

<p>Limitations of dimensional analysis include that it cannot determine numerical factors, cannot apply to all physical quantities, and does not always ensure the correctness of equations.</p> Signup and view all the answers

<p>Precision refers to the consistency of repeated measurements, while accuracy is how close a measurement is to the true value; for example, a set of measurements may be precise but not accurate if they are clustered far from the true value.</p> Signup and view all the answers

<p>Screw gauges and vernier calipers are significant because they allow for highly accurate measurements of small distances and thicknesses that are not possible with standard rulers.</p> Signup and view all the answers

<p>Error propagation refers to how uncertainties in measurements affect the uncertainty in results; in addition, it involves adding individual uncertainties, while in multiplication, it involves multiplying relative uncertainties.</p> Signup and view all the answers

<p>Dimensionless quantities are numbers without any physical units that arise from the ratio of two quantities with the same dimension, often used in the analysis of physical phenomena.</p> Signup and view all the answers