Intro to Physics
What term is defined as the precision of a measuring instrument and it represents the maximum deviation from the mean?
tolerance
What particle of the atom's nucleus determines the atomic number?
protons
Displacement divided by time equals ____________.
velocity
What is the straight line distance between two points?
displacement
What do you call two vectors that act simultaneously upon the same point?
concurrent vectors
What is the correct SI unit for the amount of a substance?
a mole
An objects state of matter depends upon the object's _______________?
energy
What is the value for g (gravity) in m/s2?
9.80
What is the name for any quantity that has both magnitude and direction?
a vector
What term has the definition of, the pathway taken by a projectile.
trajectory
What is the correct SI prefix for milli-?
10-3
A hydraulic device functions based on who's principle?
Pascal's principle
What is the value for g (gravity) in ft/s2?
32.2
The fact that lateral pressure decreases as a fluid 's velocity increased is called what principle?
Bernoulli's principle
What do we call vectors that act at angles not equal to 00 or multiples of 900?
skewed
What is the correct SI prefix for mega?
106
T/F Gravity does not contribute to the rise of water in a small tube.
True
T/F In a vacuum a feather and a coin will fall at the same rate of acceleration.
true
What is the velocity of a rock at the maximum height it attains after being hurled upward from the ground with an initial velocity of 34 feet per second?
0 ft per second
What is a simple picture that summarizes the various vectors acting on one point called?
vector diagram
What is the property of a metal that allows it to be drawn into a wire called?
Ductility
What do we call any substance capable of flowing?
fluid
What is the study of motion without regard to force, known as the cause of that motion?
Kinematics
If an object is hurled upward in a vacuum, what is the total time it takes the object to return to its original level if the time of ascent is 4.0 seconds?
8.0 seconds
A projectile's rate of fall is, dependent or independent, of its horizontal motion?
independent
What is a laboratory device called that is used to measure the pressure of a gas sample?
A manometer
What is the attractive force between like molecules?
cohesion
What two qualities have to be stated in order to specify a velocity?
magnitude (speed) and a direction
What is the definition of rectilinear motion verses curvilinear motion?
Rectilinear motion is along a straight path, while curvilinear motion is motion along a curve.
What is the mathematical shape given to the pathway of a projectile?
a parabola