Physics Exam Practice Page 4

This set of vocabulary flashcards covers fundamental physics concepts including internal and potential energy, wave phenomena like the Doppler effect, electrostatics, and mechanics based on problem sets.

Internal energy

The form of energy that could increase when a constant force is used to keep a block sliding at constant velocity along a rough horizontal track.

Elastic potential energy

The energy stored ($7.5\,J$) when a toy car's spring is wound by pushing it backward with an average force of $15\,N$ through a distance of $0.50\,meter$.

Doppler effect

The physical process illustrated by a radar gun measuring the difference in frequency between emitted and reflected radar waves to determine the speed of an automobile.

Photon energy

A quantity of electromagnetic radiation that is greatest in x rays compared to ultraviolet, infrared, or microwave radiation.

Static friction

The horizontal force ($12\,N$) acting on a box when a $12\text{-newton}$ horizontal force is applied but the box remains at rest on a tabletop.

Net force

The sum of all forces (weight, friction, and normal force) acting on a box that is at rest on an inclined plane, which is equal to zero.

Electric potential difference

The value ($3.0 \times 10^2\,V$) calculated when $4.8 \times 10^{17}\,joule$ of work is required to move an electron between two points in an electric field.

Absolute index of refraction

A property of a transparent material (calculated as $1.3$) where light with a frequency of $f = 5.09 \times 10^{14}\,Hz$ travels at $0.75$ times its speed in air.

Total work

The approximate energy expended ($5 \times 10^4\,J$) after Babar ($M = 100\,kg$) climbs a $30\,m$ building and pulls Rashid ($m = 75\,kg$) to the roof.