PHYS 1114 Lab Quizzes

LAB 1 - When comparing two values obtained experimentally, you should use -Percent error -Percent difference -Percent uncertainty

Percent Difference

LAB 1 - When comparing an experimentally value to a known (theoretical) value, you should use -Percent error -Percent difference -Percent uncertainty

Percent Error

LAB 1 - When finding the upper bound of the density, you put what number in the denominator? -The upper bound of the volume -The lower bound of the volume

The lower bound of the volume

The coefficient of static friction is always _______ the coefficient of kinetic friction. -greater than -equal to -less than

greater than

If the force applied on an object is greater than the force of kinetic friction the object will travel with ________ velocity. -decreasing -increasing -constant

increasing

LAB 2 - A quantity that has only magnitude with proper units is called: -vector -scalar

scalar

LAB 5 - The frictional force that holds an object in place is called ______ friction. -static -standing -kinetic -dynamic

static

LAB 2 - Which of the following quantities are scalars? -distance, speed, weight, displacement, velocity, mass

distance, speed, mass

LAB 3 - If you plotted x vs. t2, for an object falling from rest (assuming down to be positive), what should the graph look like? -straight line -negative slope -y-intercept is negative -y-intercept is positive -positive slope -curve with decreasing slope -curve with increasing slope -y-intercept is zero (goes through origin)

-straight line -positive slope -y-intercept is zero (goes through origin)

LAB 1 - A quantity that has to be calculated is known as a -Derived quantity -Base quantity

Derived quantity

LAB 1 - All measurements can be done with 100% accuracy. -True -False

False

LAB 1 - When finding the lower bound of the volume, you just subtract the accuracy of the instrument from the total volume. -True -False

False

LAB 2 - When finding the magnitude of the sum of 2 vectors, you can directly add the magnitude of the 2 vectors. (T/F)

False

The coefficient of friction can be zero, meaning there is no friction between the two surfaces. (T/F)

False

LAB 3 - If you drop a feather and penny in air, which one would hit the ground first? -The penny will hit first. -They will hit at the same time. -The feather will hit first.

The penny will hit first.

LAB 3 - If you drop a feather and penny in a vacuum ( no resistance), which one would hit the ground first? -They will hit at the same time. -The penny will hit first. -The feather will hit first.

They will hit at the same time.

LAB 3 - Given the kinematics equation for the motion of an object falling from rest, x=.5g*t2), what kind of relationship is predicted between x and t? (select all that apply) x=k*t, where k is a constant x=k*t+b, where k and b are constants. displacement, x, has a linear relationship with time, t. displacement, x, and time, t, obey a power law. diplacement, x, is proportional to the square of the time, t2. x=k*t2, where k is a constant. displacement, x, is proportional to time, t.

a) displacement, x, and time, t, obey a power law. b) diplacement, x, is proportional to the square of the time, t2. c) x=k*t2, where k is a constant.

LAB 1 - A measurable quantity is known as a -Base quantity -Derived quantity

base quantity

LAB 5 - The frictional force that slows an object down while in motion is called ______ friction. -kinetic -dynamic -static -standing

kinetic, dynamic

LAB 2 - A quantity that has both a magnitude with proper units as well as a direction is called: -vector -scalar

vector

LAB 2 - Which of the following quantities are vectors? -distance, speed, weight, displacement, velocity, mass

weight, displacement, velocity

LAB 3 - According to kinematics (x=.5g*t2), the acceleration is dependent only upon -where the object is located. -the mass of the object -the shape of the object -the distance that the object fell

where the object is located