Terms  Definitions 

cos90° 
0

Centi 
c 2

Magnetic Flux 
Weber (Wb)

Parallel 
1/R= 1/R1 + 1/R2

Units of charge (q) 
Coulomb (C)

Ultrasound is a .......... wave. Which ...... be heard by humans. 
sound
can't 
__________ are always attractive. 
gravitational forces

Displacement 
A vector quantity describing the straight line distance between an initial and a final position of some particle or object

Protective layer of gelatin that provides sturdiness to unexposed radiographic film 
SupercoatOvercoat

Magnitude > Components 
X: Mcos(), Y: Msin()

Shallow image depth= ___ frame rate? 
High

Mass 
Describes the inertial property of bodies and is defined as the quantity measure's of inertia

Hyades alpha star is 
Aldebaran; M.S. type K

greater resistance with... 
1. longer, thinner, higher temps

angular velocity 
angular displacement of object divided by the time needed to make the displacement

Colloid 
Particles are suspended but they can reflect light
ex. jello, pudding, mayo, smog/fog 
average acceleration 
change in object's velocity during time interval, divided by the time interval

True or false. In radiography, the only quality control testing that is done daily is processor quality control. 
True

voltage ripple 
full wave= 100%
3 phase, 6 pulse=13% high frequency= >1% 
hard often brittle materials like carbon 
covalent crystals

Pressure 
the force acting per unit area Pa

diffuse 
the random scattering of light rays at diffrent angles when a beam of light is reflected off a rough surface.

simple harmonic motion 
motion that resultsif force that restores objects equilibrium is directly proprtional to the displactement of the object

Planck 
Formulated the energy of a photon by creating incandescence light.

What is the equation for speed? 
Distance Travled/Time elapsed

Two charged particles held close to each other are released. As they move, the acceleration decreases. Therefore, the particles have what kind of charges? 
like charges

Compared to its weight on Earth, a 10kg object on the moon will weigh 
less

Compared to its weight on Earth, a 10kg object on the moon will weigh 
Chapter 4

Concentration of energy in a sound beam? Units? 
Intensity. w/cm^2

What does increasing the temperature of a system do to its entropy? 
It increases it.

Isomers 
two or more nuclides with same atomic number, same mass numbers. Different value of energy content. Always belong to same element

conduction 
the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts

LoopWire Magnetic Field 
The magnetic field produced at the center of a circular loop of currentcarrying wire with a radius of r, calculated by the equation: B = u0i/2r

What is astronomy? 
Astronomy is the study of the galaxies, stars, planets, asteroids, comets, and all the other objects that can and sometimes cannot be seen in the universe.

Viscosity Flowing w/ Liquids 
High Viscosity low flow, thick
Low Viscostiy high flow, thin 
Equal Forces 
Equillibrium  sum of the forces add to zero

Condensation occurs when matter changes from a 
gas to a liquid

Condensation occurs when matter changes from a 
Chapter 23 Change of phase

What is the SPTA intensity limit for unfocused US? 
100mW/cm squared

Rechargedable Nickel 
Cadmium or NiCad cell used in battery powered mobile xray units

base unit 
one of the units, as mass, length, time, or electric current, taken as a basis for a system of units in the sciences

kirchhoff's laws 
at any junction the sum of currents in will equal the sum of currents out  conservation of electric charge

Dark Matter 
Matter we can't see that tugs on stars and galaxies that we can see.

Normal force – 
a force that is perpendicular to the surface plane.

What creates a shallow focus: ___ diameter, ___ frequency? 
Small diameter, low frequency

newton law of motion 
any of three laws of classical mechanics, either the law that a body remains at rest or in motion with a constant velocity unless an external force acts on the body

Radius LuminosityTemperature Relationship 
to truly know the brightness of a star you need to know size and temp

In general, the tail of a comet streams away from the comet in a direction... 
away from the Sun

600 mA @ 200 ms = mAs 
600mA x 0.2s=120 _______ mAs

gravitational field strength 
the force felt by a 1.0 kg mass when place at a certain location in a gravitational field, vector quantity (direction is to the center of the celestial body causing the field), symbol g, at surface of earth g=9.8 N/kg

Bronco the skydiver falls toward Earth. The attraction of Earth on Bronco pulls him down. The reaction to this force is 
Bronco pulling up on Earth

Bronco the skydiver falls toward Earth. The attraction of Earth on Bronco pulls him down. The reaction to this force is 
Chapter 6 Newton's Third Law of Motion

Typically temperature scales are based on... 
Both the boiling and freezing points of water

The acceleration produced by a net force on an object is 
inversely proportional to the mass of the object, directly proportional to the magnitude of the net force, in the same direction as the net force

The acceleration produced by a net force on an object is 
Chapter 5 Newton's Second Law of Motion Force and Acceleration

What happens if you put a small compass in a mgnetic feild? 
makes parallel lines to magnetic feild lines

one dalton is equal to what 
1/12th of the mass of one atom of carbon 12

Two children with masses of 21 and 43 kg are sitting on a balanced seesaw. If the lighter child is sitting 3 m from the center, where is the heavier child sitting? 
1.46 m from the center(set up a ratio)

Kelvin 
=C+273

minuscule 
very small.

all electrons paired 
diamagnetic

constant speed 
Ff = F

Classification 
A system of organizing data

Destructive interference takes place with _______________ waves. 
Outofphase

formula of force 
mass times acceleration

Tarsiers 
large tarsal bones, eat meat, nocturnal

heat radiation 
charging atoms to become electromagnetically charged for heat transfer

Electrical forces between charges are normally strongest when the charges are close/far apart? 
close

Convention 
Thermal energy transfer between two points due to a bulk of matter. E.g hot fluid expands, gets less dense, rises, and creates a current. (can only take place in fluids or gasses).

cheetah 
a cat, Acinonyx jubatus, of southwestern Asia and Africa, resembling a leopard but having certain doglike characteristics, often trained for hunting deer, antelope, etc.: an endangered species.

solar flare 
a sudden eruption of intense highenergy radiation from the sun's surface

machine 
a device that conserves energy or helps us do work

Scaler 
A quantity where direction is not important

Highest albedo of any solar system object 
Enceladus

compound 
chemical substance made of atoms of two or more different elements combined in a fixed proportion

Accuracy 
An accurate measurement is one which is close to the true value. Repeating the experiment usually helps to get closer to the true value.

acceleration 
the act of accelerating; increase of speed or velocity.

radians 
the measure of a central angle subtending an arc equal in length to the radius: equal to 57.2958Â°.

Fundamental Frequency 
The lowest frequency that a standing wave can support, given by the equation f=nv/2L for strings fixed at both ends and pipes open at both ends and f=nv/4L for pipes closed at one end, where n=1; first harmonic

What are the sensory regions of the skin served by a particular spinal nerve called? 
Dermatomes

Electric field 
"aura" around any charge, its ability to exert force
measures their ability to exert force on other charges 
A certain ocean wave has a frequency of 0.05Hz and a wavelength of 10 meters. What is the wave's speed? 
5m/s

One Partial pressure is the total pressure times the fractional concentration 
Dalton's Law

Which law describes the physics of refraction? 
Snell's Law

A convenient aid for visualizing electric field patterns is to draw lines pointing in the direction of the field vector at any point. 
electric field lines

tennis 
a game played on a rectangular court by two players or two pairs of players equipped with rackets, in which a ball is driven back and forth over a low net that divides the court in half.

acceleration (vector; m/s2) 
the rate of change of velocity.

Translational Equilibrium 
State where the sum of the forces acting on an object is zero, giving it no net acceleration

What is gamma radiation used for? 
medical imagingCancer treatmenta form of nuclear radiation

A 0.5 kg airhockey puck is initially at rest. What will its kinetic energy be after a net force of 0.6 N acts on it for a distance of 0.4 m? 
.24 J

Monochromatic light refers to light that is what? 
of only one color

The distance between successive identical parts of wave is called its 
wavelength

The distance between successive identical parts of wave is called its 
Chapter 25 Vibrations and Waves

work 
The product of the force on an object and the distance through which the object is moved (when force is constant and motion is in a straight line in the direction of the force); measured in Joules

Archimedes's Principle 
The buoyant force on an object imersed in a fluid is equal to the weight of the fluid displaced by the object.

What is the voltage generated by a standard zinc carbon AAA battery? 
1.5 volts

kepler's first law 
the paths of the planets are ellipse with the sun at one focus

Newton’s 1st Law 
Every object continues in a state of rest or uniform motion in a straight line unless acted upon by an external force.

Two identical blocks of iron, one at 10 degrees C and the other at 20 degrees C, are put in contact. Suppose the cooler block cools to 5 degrees C and the warmer block warms to 25 degrees C. This would violate the 
second law of thermodynamics

Two identical blocks of iron, one at 10 degrees C and the other at 20 degrees C, are put in contact. Suppose the cooler block cools to 5 degrees C and the warmer block warms to 25 degrees C. This would violate the 
Chapter 24 Thermodynamics

power 
is the time rate at which work is done or energy is transferred. In calculus terms, power is the derivative of work with respect to time. The SI unit of power is the watt (W) or joule per second (J/s). Horsepower is a unit of power in the British system of measurement.

joule 
a unit of energy, the work done by a force of one newton when its point of application moves through a distance of one meter in the direction of the force

xrays convert to light 99% comes from:1% comes from: 
light conversion 99%from direct interaction b/w xrays and film.

Newton’s first law – 
an object at rest will remain at rest, and an object in motion with constant speed will remain at constant speed unless acted on by an external unbalanced force (if ΣF = 0, then V = Constant).

What is pressure? 
Force per unit area (P = force / area)

How much time does it take for most brain cells to die with loss of blood flow? 
3 to 4 minutes

At what part of a path does a projectile have minimum speed? 
At the top of its path

At what part of a path does a projectile have minimum speed? 
Chapter 3 Projectile Motion

A very massive object A and a less massive object B move toward each other under the influence of mutual gravitation. Which force is greater? 
Both forces are the same

The amount of heat required to change the temperature of a unit mass of a substance by 1 degree is its specific heat capacity 
True

The amount of heat required to change the temperature of a unit mass of a substance by 1 degree is its specific heat capacity 
Chapter 21 Temperature, Heat, and Expansion

What forces are acted upon a stationary ball on a table? 
Gravity is pulling the ball down. The table is pushing the ball up. The forces are equal and opposite

What is an example of conduction? 
a metal rod that is placed in a flame  the one end heats up and the other end also becomes warm due to conduction

If, after a few years, your films are turning yellow in color, it is probably because: 
The fixer was not removed during the wash cycle

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