PHYS 250 Final Exam 2025 COMPLETE EXAM
QUESTIONS AND VERIFIED ANSWERS |RECENTLY
TESTING REAL EXAM QUESTIONS| 100% SOLVED!!
Consider two children sitting on a merry-go-round, with one closer to the outer
edge and one closer to the center.
Which child has a greater angular speed? - (ANSWER)They both have the same
angular speed.
Consider two equal masses M attached to the ends of massless rods, of length R,
as shown in the figure. Treat the two masses as point masses, each located at a
distance R from the point where the rods touch.
What is the moment of inertia of this system, about an axis perpendicular to the
page and passing through the point where the rods touch? - (ANSWER)2MR^2
Consider the three objects shown in water. The wood floats while the aluminum
and the steel sink. The wooden and aluminum blocks are the same size. The
aluminum and steel blocks have equal mass and the density of steel is greater
than the density of aluminum.
Which object has the greatest buoyancy force on it? - (ANSWER)The aluminum
A mass is connected to a spring and is allowed to move horizontally. The mass is
at a position L when the spring is unstretched. The mass is then moved, stretching
the spring, and released from rest. It then moves with simple harmonic motion.
, Part (a) At the instant that the mass passes through the position where the spring
is unstretched, what can be said about its instantaneous acceleration?
Part (b) At the instant that the mass passes through the position where the spring
is unstretched, what can be said about its instantaneous speed?
Part (c) At the instant that the spring is compressed the most, what can be said
about the magnitude of its instantaneous velocity? - (ANSWER)(a) It is zero.
(b) It is maximum.
(c) It is zero.
Part (a) Which of the following are true about traveling waves? Select all that
apply.
Part (b) Which of the following are true about all mechanical traveling waves?
Select all that apply. - (ANSWER)(a) Waves must have an amplitude, wavelength,
and frequency., Traveling waves are modeled as some sort of "disturbance" that
travels away from its source., Traveling waves transport energy.
(b) They must have intensity., They must have an amplitude, wavelength, and
frequency., They transfer energy., They are created by particles that are disturbed
from their equilibrium positions/state.
QUESTIONS AND VERIFIED ANSWERS |RECENTLY
TESTING REAL EXAM QUESTIONS| 100% SOLVED!!
Consider two children sitting on a merry-go-round, with one closer to the outer
edge and one closer to the center.
Which child has a greater angular speed? - (ANSWER)They both have the same
angular speed.
Consider two equal masses M attached to the ends of massless rods, of length R,
as shown in the figure. Treat the two masses as point masses, each located at a
distance R from the point where the rods touch.
What is the moment of inertia of this system, about an axis perpendicular to the
page and passing through the point where the rods touch? - (ANSWER)2MR^2
Consider the three objects shown in water. The wood floats while the aluminum
and the steel sink. The wooden and aluminum blocks are the same size. The
aluminum and steel blocks have equal mass and the density of steel is greater
than the density of aluminum.
Which object has the greatest buoyancy force on it? - (ANSWER)The aluminum
A mass is connected to a spring and is allowed to move horizontally. The mass is
at a position L when the spring is unstretched. The mass is then moved, stretching
the spring, and released from rest. It then moves with simple harmonic motion.
, Part (a) At the instant that the mass passes through the position where the spring
is unstretched, what can be said about its instantaneous acceleration?
Part (b) At the instant that the mass passes through the position where the spring
is unstretched, what can be said about its instantaneous speed?
Part (c) At the instant that the spring is compressed the most, what can be said
about the magnitude of its instantaneous velocity? - (ANSWER)(a) It is zero.
(b) It is maximum.
(c) It is zero.
Part (a) Which of the following are true about traveling waves? Select all that
apply.
Part (b) Which of the following are true about all mechanical traveling waves?
Select all that apply. - (ANSWER)(a) Waves must have an amplitude, wavelength,
and frequency., Traveling waves are modeled as some sort of "disturbance" that
travels away from its source., Traveling waves transport energy.
(b) They must have intensity., They must have an amplitude, wavelength, and
frequency., They transfer energy., They are created by particles that are disturbed
from their equilibrium positions/state.
