For a mass suspended on a spring in the vertical direction, the time for one complete oscillation will depend on:
a. the value for g (the acceleration due to gravity).
b. the distance the mass was originally pulled down.
c. the maximum speed of the oscillating mass.
d. the time doesn't depend on any of the above.
[Ques. 2] A proton moving with a speed of 3.20 105 m/s perpendicular to a uniform magnetic field of 0.0786 T will follow which of the paths described below? (qp = 1.60 1019 C and mp = 1.67 1027 kg)
a. a straight-line path
b. a circular path of 4.25 cm radius
c. a circular path of 10.9 cm radius
d. a circular path of 1.52 cm radius
e. a circular path of 54.1 cm radius
[Ques. 3] A mass on a spring vibrates in simple harmonic motion at a frequency of 4.20 Hz and an amplitude of 7.50 cm. If the mass of the object is 0.260 kg, what is the spring constant?
a. 6.86 N/m
b. 696 N/m
c. 181 N/m
d. 24.1 N/m
e. 339 N/m
[Ques. 4] A proton and a deuteron are moving with equal velocities perpendicular to a uniform magnetic field. A deuteron has the same charge as the proton but has twice its mass. The ratio of the acceleration of the proton to that of the deuteron is:
a. 0.5.
b. 1.
c. 2.
d. There is no acceleration in this case.
[Ques. 5] I attach a 4.0-kg block to a spring that obeys Hooke's law and supply 3.4 J of energy to stretch the spring. I release the block; it oscillates with period 0.15 s. The amplitude is
a. 2.2 cm.
b. 3.1 cm.
c. 1.6 cm.
d. 20 cm.
e. 4.4 cm.
[Ques. 6] A proton and a deuteron are moving with equal velocities perpendicular to a uniform magnetic field. A deuteron has the same charge as the proton but has twice its mass. The ratio of the magnetic force on the proton to that on the deuteron is:
a. 0.5.
b. 1.
c. 2.
d. There is no magnetic force in this case.
[Ques. 7] Which one of the following quantities is at a maximum when an object in simple harmonic motion is at its maximum displacement?
a. speed
b. acceleration
c. kinetic energy
d. frequency
[Ques. 8] A proton moving at a speed of 4.2 106 m/s cuts across the lines of a magnetic field at an angle of 78. The strength of the field is 0.91 104 T. What is the magnitude of the force acting on the proton? (qp = 1.6 1019 C)
a. 1.3E17 N
b. 3.1E17 N
c. 6.0E17 N
d. 7.2E9 N
e. 9.6E36 N
[Ques. 9] By what factor must one change the weight suspended vertically from a spring coil in order to increase its period of simple harmonic motion by five?
a. 1/25
b. 1/5
c. 5
d. 25
e. 1
[Ques. 10] A proton is released such that it has an initial speed of 4.1 105 m/s from left to right across the page. A magnetic field of 0.8 T is present at an angle of 45 to the horizontal direction (or positive x axis). What is the magnitude of the force experienced by the proton? (qp = 1.6 1019 C)
a. 5.9E33 N
b. 9.3E33 N
c. 3.7E14 N
d. 4.5E14 N
e. 3.7E14 N
Quick Reply
