Math, Atom, & Energy Flashcards
What term best describes two variables in an equation that move opposite to each other up or down, but by the same magnitude - that is, when one goes up, the other goes down by the same degree:
inversely proportional
As the distance from the x-ray tube to the image receptor plate changes, the intensity of radiation changes:
according to the inverse square of the distance
In physics, what are the fundamental standards of measurement?
Time, mass, and length
Anything that exerts a “push” or a “pull” such that it can cause a change in the motion of another body may be described as:
A force
To hold together the nucleus of an atom, the strong nuclear force must overwhelm:
Electrical Force
The SI unit of energy is the:
Joule
Heat is defined as the flow of _____ from one substance to another:
Internal Energy (U)
Temperature measures the _____ of molecules:
average kinetic energy
The SI units of velocity are…
Meters per Second (m/s)
If the net force on an object is zero, ______.
the object’s acceleration must be zero.
Which one of the following has the largest kinetic energy?
- a jet airplane flying at maximum speed
- a women swimming
- a space shuttle orbiting the earth
- the earth moving in its orbit around the sun
- a raindrop falling
the earth moving in its orbit around the sun
What are the SI units for length?
Meters
When a substance is exposed to something that has a lower temperature, what happens to it?
Heat is transferred from it.
The barium sulfate suspension which patients drink for an Upper GI series is chemically best described as a _______.
Mixture
What must be changed in an atom in order to change the identity of the element?
Z number; number of protons
