Physics 1 LAB Quiz 1

You are told to plot a graph of position vs. time. Which of the following is true?

a. Position goes on the y axis and time goes on the x axis.

b. Position goes on the x axis and time goes on the y axis.

c. You are free to plot position and time on either axis.

d. Without further information it is impossible to know which quantity goes on which axis.

Position goes on the y axis and time goes on the x axis.

Given your standard kinematic equation V = at + v(initial), and the standard equation for a line y=mx+b, when asked to graph velocity vs. time, graphically

a. The independent variable

b. The dependent variable

c. the y-axis intercept

d. The slope of the line

the y-axis intercept

You are asked to plot velocity vs time. The slope of this graph will represent what physical quantity?

a. Velocity

b. Time.

c. Displacement.

d. Acceleration.

Acceleration.

You have a position vs. time graph. Two points on the best fit line of this graph are (1.0s, 5.2m) and (3.7s, 6.4m). Calculate the slope of this graph, with units, and with correct sig figs.

a. 0.44 s/m

b. 0.44 m/s

c. 2.2 s/m

d. 2.2 m/s

0.44 m/s

In exercise 3 of the Graphical Analysis of Data experiment, equation 4 [T = 2pi*sqrt(l/g)] describes the behavior of a simple pendulum. What does T in the equation represent?

a. Tension

b. Length

c. Period

D. Energy

Period

When recording a manual measurement, which of the following is more correct?

The number of digits to be recorded depends on the instrument being used, and the last digit, in the number recorded, will be a guess

(IMAGE)

Above is a diagram of a micrometer. What is the reading of this device?

2.782mm

The SI units for mass, length, and time are?

Kilograms, meters, seconds

The purpose of this experiment is to? (Laboratory Measurements)

a. To learn the proper use of the basic laboratory measuring devices and to perform basic laboratory calculations.

b. To learn how to use computer software in making laboratory measurements.

c. To learn lab safety rules.

d. To learn lab rules and protocol in dealing with lab equipment.

To learn the proper use of the basic laboratory measuring devices and to perform basic laboratory calculations

The measuring devices we will be using today are:

a. Metric ruler, English ruler, micrometer, vernier caliper.

b. English ruler, micrometer, vernier caliper

c. metric ruler, micrometer, laboratory balance

d. metric ruler, micrometer, vernier caliper, laboratory balance.

Metric ruler, micrometer, micrometer, Vernier caliper, laboratory balance

When representing vectors graphically the magnitude of the vector is related to the length of the arrow drawn. True or False?

True

The two coordinate systems mentioned in the Vector Addition lab are:

a. Polar and Cylindrical

b. Rectangular and Cylindrical

c. Rectangular and Polar

d. Polar and Spherical

Rectangular and Polar

What sort of vectors will we be adding in this lab?

a. Force

b. Acceleration

c. Velocity

d. Position

Force

Let vector A have a magnitude of 4, and vector B have a magnitude of 3, when adding them together what resultant will you get?

Not enough information is given to answer the question

When adding vectors how is the equilibrant related to the resultant?

The equilibrant has the opposite direction but the same magnitude as the resultant

When a mass is being uniformly accelerated that means?

The mass is moving with a constant acceleration

In this experiment we will be making three graphs. They are?

Acceleration vs. Time, Velocity vs. Time, and Position vs. Time

The graph of acceleration vs. time, more or less, will be:

A horizontal line with no slope.

Which of the following equations will describe the velocity vs time graph?

v=v(initial) + at

In this experiment (Uniformly Accelerated Motion) the track that the cart will be moving on should be?

Lay horizontally flat on the table

The magnitude of the acceleration of the masses in our Atwood Machine lab will experience is?

Less than g.

The net force acting on the masses in this experiment is given by the equation:

F=(M2-M1)g

One of the equations listed in this lab handout that gives the theoretical value of acceleration in this lab is?

a=F/(M2+M1)

If you plot Net Force vs Acceleration what physical quantity will the slope of that graph represent?

Mass

In this experiment (Atwood Machine) we will be using an instrument called 'The Force Sensor.'

True

The x-component of an object's velocity during projectile motion is?

Constant

For a projectile shot off the top of a table at some arbitrary initial angle, and then allowed to fall to the floor below which of the following is true regarding its overall velocity?

Vi less than or equal to Vf

For a projectile fired on a constant level surface the maximum range (the horizontal distance traveled) is obtained by firing the projectile at what angle?

45 degrees

For a projectile fired on a constant level surface its overall velocity is at a minimum when?

When the projectile is at its max height

For projectile motion the equation given in your manual that describes the range (distance traveled in the horizontal direction) is?

dx=v(initial)cos(theta)*t

During today's lab (Moment of Inertia), we will:

Measure the moment of inertia of a disk and a ring

The moment of inertia for a disk of radius r, mass m, rotating about its center axis is:

1/2 * m*r^2

Assuming the same mass, and similar radius, the moment of inertia of a Ring is larger than a Disk

True

The torque induced by an applied force F, among other things, depends on the straight line distance from the point the force is being applied on the mass to the point the mass is rotating about

True

The net torque a mass experience is given by which of the following equations?

T(=(alpha)*l

A centripetal force is any force that induces circular motion in an object. In our experiment what will serve as the centripetal force

The combination of the force of gravity, and the tension of the string

How is the centripetal force related to the radius of the circular path the mass is moving on?

The force is inversely proportional to the radius of the path

How is the centripetal force related to the tangential velocity of the mass?

The force is proportional to the square of the tangential velocity of the mass

How many different masses are we going to perform this experiment (Centripetal force) with?

2

For an object moving in a circle, even if its speed is constant, there must be a non-zero net force action on it to get it to change its direction of motion, and that means its state of motion is changing. Which of Newton's Laws tell us that if an object's state of motion is changing then there must be a non-zero net force acting on it?

.Newton's First Law.

Archimedes' Principle says that in the case of an object completely submerged in a fluid, solely due to its own weight, the buoyant force is

The buoyant force is equal to the weight of the fluid displaced

For a floating object how does its density relate to the density of the fluid?

P(fluid)>P(object)

Any liquid or gas can be considered fluid

True

Archimedes principle does not apply to partially submerged objects.

False

When an object is being submerged into a fluid the buoyant force acting on it does what?

The buoyant force increases with depth

Simple harmonic motion occurs when the net force is proportional to the displacement and points

False

For part of of this lab (SHM) we will be changing the amount of mass attached to our spring in what manner?

Adding 10g of mass at a time

The period of a mass-spring undergoing simple harmonic motion depends on:

The mass and the spring constant

This experiment (SHM) does not require you to calibrate the force sensor

False

In the equation for the spring constant F=-k*x the negative sign represents

Force points opposite to the direction of the displacement of the mass

The frequency generator will be initially set to what frequency in this experiment (Standing Waves)

60Hz

The tension in the string will be equal to?

The weight of the mass hanging from the string

A node is the location on a standing where the local disturbance, due to the interference of the interacting waves, always sums to zero.

True

In equation 3 in the handout, Lambda = 2L/n, n is the number of what?

Segments

The general equation for the speed of the wave is what?

v=Lamda * frequency