Physics 111 Final Task Questions and Correct
Answers
Which of the following is not a vector?
latent heat
Which of the following statements about the speed of waves on a string is true? The
speeddepends on I. tension in the string II. frequency III. mass per unit length
I and III only
A car of mass m traveling at speed v, stops in time t when the maximum braking force
isapplied. Assuming that the braking force is independent of mass, what time would
berequired to stop a car of mass 2m traveling at speed v?
2t
Which would be the most comfortable temperature for your bath water?
310 K
In fundamental MKS units, intensity has a unit of
kg/s3
The period of a spring-mass system undergoing simple harmonic oscillation is T. If
theamplitude of the spring-mass system's motion is doubled, the period will be
T
A spring is compressed between two objects of unequal masses m and M. The objects
areheld together with a string. The objects are initially at rest when the string is cut.
Whichstatement is true if the masses are on a frictionless surface?
, The magnitude of the linear momentum of the objects is always the same
An object moves to the East across a frictionless surface with constant speed. A
personthen applies a constant force to the North on the object. What is the resulting
path thatthe object takes?
A parabolic path curving upward to the North
A small mass, m, hits a solid stick of mass M pivoted at one end. The mass hits the
meterstick at its bottom and sticks to it moving horizontally with speed v as it does. If
one wantsto find the speed of the mass-meter stick system after collision, the best way to
achievethis is to use
angular momentum conservation
A point-like object is connected to the end of a string of length L. The string is
pulledupward until it makes a 90 degree angle with the vertical. The object of mass m
isreleased from rest and swings through a circular arc. What is the tension in the
stringwhen the mass swings through the bottom of the arc?
3mg
A box slides to the right across a horizontal floor. A person called Ted exerts a force T
tothe right on the box. A person called Mario exerts a force M to the left which is half
aslarge as the force T. Given that there is friction f and the box accelerates to the right,
rankthe size of the forces exerted on the box
f<M<T
An electron orbits a helium nucleus because of the electric force. The mass of the
nucleusis 8000 times that of the electron and the charge of the nucleus is twice the
Answers
Which of the following is not a vector?
latent heat
Which of the following statements about the speed of waves on a string is true? The
speeddepends on I. tension in the string II. frequency III. mass per unit length
I and III only
A car of mass m traveling at speed v, stops in time t when the maximum braking force
isapplied. Assuming that the braking force is independent of mass, what time would
berequired to stop a car of mass 2m traveling at speed v?
2t
Which would be the most comfortable temperature for your bath water?
310 K
In fundamental MKS units, intensity has a unit of
kg/s3
The period of a spring-mass system undergoing simple harmonic oscillation is T. If
theamplitude of the spring-mass system's motion is doubled, the period will be
T
A spring is compressed between two objects of unequal masses m and M. The objects
areheld together with a string. The objects are initially at rest when the string is cut.
Whichstatement is true if the masses are on a frictionless surface?
, The magnitude of the linear momentum of the objects is always the same
An object moves to the East across a frictionless surface with constant speed. A
personthen applies a constant force to the North on the object. What is the resulting
path thatthe object takes?
A parabolic path curving upward to the North
A small mass, m, hits a solid stick of mass M pivoted at one end. The mass hits the
meterstick at its bottom and sticks to it moving horizontally with speed v as it does. If
one wantsto find the speed of the mass-meter stick system after collision, the best way to
achievethis is to use
angular momentum conservation
A point-like object is connected to the end of a string of length L. The string is
pulledupward until it makes a 90 degree angle with the vertical. The object of mass m
isreleased from rest and swings through a circular arc. What is the tension in the
stringwhen the mass swings through the bottom of the arc?
3mg
A box slides to the right across a horizontal floor. A person called Ted exerts a force T
tothe right on the box. A person called Mario exerts a force M to the left which is half
aslarge as the force T. Given that there is friction f and the box accelerates to the right,
rankthe size of the forces exerted on the box
f<M<T
An electron orbits a helium nucleus because of the electric force. The mass of the
nucleusis 8000 times that of the electron and the charge of the nucleus is twice the
