Unformatted text preview: ength 0.1 nm are required for
a particular medical procedure. Which of the
following values’ is closest to the minimum
potential difference, in kV, that must be
applied to the X-ray tube?
b. 1 2
d. 0.12 91. When two students talk to each other, the
sound produced is an example of a(n)
d. Transverse wave
Standing wave Page 14 of 15 ©Prep101
96. Which of the following values, in MeV, is
closest to the maximum energy of the positron
released in the decay of 13 N to 13C ?
7 N ATOMIC Mass (u)
6 C 100.
Four long straight wires carry equal
current into the page as shown. 13.003355 a.
1.708 The direction of magnetic force exerted on
the wire on the left is: 97. The sound intensity level at Angela’s ear is
70.0 dB. Her ear is 5.00 meters from a point
source of sound of frequency 500 Hz. If
Angela moves her ear to a distance of 8.00 m
from the source, what would be the new
sound intensity level at Angela’s ear?
a. 66 dB
b. 60 dB
c. 56 dB
d. 50 dB a.
up (towards the top of the page)
down (towards the bottom of the page) 101. Rank the values of the total power dissipated
by the circuit in descending order (largest
first). 98. Ignoring air resistance, if you drop and object,
it experiences a force downward of m×9.81N,
and accelerates downwards at 9.81 m/s2. If
instead you throw it down, what will be the
acceleration of the object?
a. 9.81m/s2 upwards
b. 9.81m/s2 downwards
c. More than 9.81m/s2 downwards
d. Less than 9.81m/s2 downwards
99. A mass m is suspended by a (massless) string
forming a simple pendulum of 1.0 m length.
The pendulum is initially at an angle of 30
degrees with the vertical when the mass is
released. What is the maximum speed of the
mass? (Take g = 10 m/s2)
a. 1.6 m/s
b. 2.7 m/s
c. 3.5 m/s
d. 5.3 m/s a.
d. A, B, C
B, A, C
C, A, B
A, C, B 102. A battery is manufactured to have an emf of
24.0V, but the terminal voltage is only
22.0V when the battery is connected across
a 7.5 Ω resistor. What is the internal
resistance of the battery?
a. 3.2 Ω
b. 0.27 Ω
c. 1.2 Ω
d. 0.68 Ω Page 15 of 15...
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