Introduction to Physics

<p>The distance traveled by light in a vacuum in 1/299,792,458 of a second. (D)</p> Signup and view all the answers

<p>kg/m³ (D)</p> Signup and view all the answers

<p>10⁻⁶ (A)</p> Signup and view all the answers

<p>It is easily accessible and readily available. (B)</p> Signup and view all the answers

<p>9,192,631,770 Hz (D)</p> Signup and view all the answers

<p>3 (C)</p> Signup and view all the answers

<p>To convert counts into time. (C)</p> Signup and view all the answers

<p>The Planck constant, velocity of light and frequency of the transition of Cs133. (B)</p> Signup and view all the answers

<p>Length, time, mass. (A)</p> Signup and view all the answers

<p>They differ in their definition of the energy unit for heat. (B)</p> Signup and view all the answers

<p>22.6 x 10^3 kg/m^3 (A)</p> Signup and view all the answers

<p>25.4 mm (A)</p> Signup and view all the answers

<p>V = (4/3)πr^3 (C)</p> Signup and view all the answers

<p>1.67 x 10^-27 kg (C)</p> Signup and view all the answers

<p>0.23 x 10^18 kg/m^3 (A)</p> Signup and view all the answers

<p>It's a simplified model and not a completely accurate depiction. (D)</p> Signup and view all the answers

<p>1 x 10^-15 m (D)</p> Signup and view all the answers

<p>11.4 kg/m^3 (C)</p> Signup and view all the answers

<p>Physics primarily focuses on the quantitative understanding of cause-and-effect relationships. (C)</p> Signup and view all the answers

<p>It helps to reduce interior road noise, but its effectiveness is not explicitly quantified. (C)</p> Signup and view all the answers

<p>Principles describe the reason behind facts, while facts represent observed correlations. (D)</p> Signup and view all the answers

<p>The presence of 5-mm foam lining in Tesla tires. (C)</p> Signup and view all the answers

<p>To facilitate communication and understanding between different investigators. (A)</p> Signup and view all the answers

<p>Force (C)</p> Signup and view all the answers

<p>The Big Bang is a unique event that cannot be repeated for verification. (B)</p> Signup and view all the answers

<p>Some companies promote tires with lower rolling friction as being more fuel-efficient than standard tires. (D)</p> Signup and view all the answers

<p>33.0° (A)</p> Signup and view all the answers

<p>0.364 (C)</p> Signup and view all the answers

<p>Meters to miles and seconds to hours (D)</p> Signup and view all the answers

<p>137.0 km/h (C)</p> Signup and view all the answers

<p>The final result is of the correct unit or dimension (A)</p> Signup and view all the answers

<p>Sine is about -5% off compared to tangent (A)</p> Signup and view all the answers

<p>2.30% (C)</p> Signup and view all the answers

<p>33.0° (C)</p> Signup and view all the answers

Mass per unit volume, typically in kg/m³.

A rough scale of size, often as powers of ten.

Measurements are often rounded or estimated.

For small angles, tan(α) ≈ sin(α) ≈ α (in radians).

Commonly quoted as about 343 m/s.

The study of cause and effect in quantitative terms.

Distinction where cause explains 'why' and effect explains 'how' a phenomenon occurs.

The process of measuring and assigning numbers to physical events.

Laws based on repeated observations and experiments, not just theoretical.

A systematic approach involving hypothesis, experimentation, and repeatability to establish facts.

Agreed measurements necessary for effective communication in scientific findings.

Any observable occurrence described by mass, length, and time.

Misrepresentations that can distort the understanding of physical laws.

Measurement system based on Meter, Kilogram, and Second.

Defined as the distance light travels in vacuum in 1/299792458 seconds.

Device that measures time based on the frequency of Cesium 133 atom transitions.

Established by the hyperfine transition frequency of Cesium 133 atoms.

Originally based on a platinum-iridium piece stored in France.

Based on the Planck constant, light velocity, and Cs133 frequency.

Comparing a ruler to a universal standard for accuracy.

Instrument to measure the wavelength of emitted light for length calibration.

Density calculated as mass divided by volume for a proton.

The mass of a proton is 1.67 × 10⁻²⁷ kg.

The diameter of a proton is 2.4 femtometers (fm).

Density is mass divided by volume: ρ = m/V.

Volume of a sphere: V = (4/3)πr³.

Density of osmium is 22.6 × 10³ kg/m³.

Standard unit for density is kg/m³.

Units like inches, miles, and pounds are non-SI.

A unit of angle measurement equivalent to about 57.3 degrees.

The tangent of an angle, the ratio of the opposite side to the adjacent side in a triangle.

The sine of an angle, the ratio of the opposite side to the hypotenuse in a triangle.

The percentage difference indicating how much tan(α) diverges from angle α for small angles.

A technique to ensure calculations are dimensionally consistent, using units throughout.

Ratios used to convert from one unit to another, enabling comparisons or calculations in different systems.

The process of converting speed from one unit (like m/s) to another (like mph or km/h).

International System of Units, the standard metric units for measurement.