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AP Physics B Test 2 Questions
Question 1: The de Broglie wavelength of an electron of mass m that is moving with the speed v, v << c, is:
h/(mv)
hf
pc
h/v
mv/h
Question 2:
Two moles of an ideal gas is initially at pressure p, volume V
_{1}
and temperature T
_{1}
. If V
_{1}
= 3V
_{2}
, what is the temperature T
_{2}
at point B if process AB is isobaric?
T
_{2}
= T
_{1}
/3
T
_{2}
= T
_{1}
/2
T
_{2}
= T
_{1}
T
_{2}
= 2T
_{1}
T
_{2}
= 3T
_{1}
Question 3: A beam of particles of charge q = 5·10
^{-20}
C and mass m = 2·10
^{-25}
kg enters an area with a magnetic field of magnitude B = .2T with a speed of 10
^{3}
m/s. The path of the particles is a circular arc of radius R. The gravitational force is negligible. What is the radius R?
20m
.002m
.02m
.2m
2m
Question 4:
Four point charges are placed in the corners of a square, as shown in the figure above. Charges q
_{b}
= 10
^{-9}
C, q
_{c}
= -10
^{-9}
C and q
_{d}
= 10
^{-9}
C. What is the magnitude of charge q
_{a}
if the magnitude of the electric force on q
_{c}
is 0 Newtons?
-1.41·10
^{-9}
C
-2.82·10
^{-9}
C
-2·10
^{-9}
C
-2.2·10
^{-10}
C
-10
^{-9}
C
Question 5:
In the figure above, θ
_{a}
is the angle of incidence in the air and θ
_{i}
is the angle of refraction of a block of ice. What is the index of refraction of the block of ice?
1.9
1
1.75
1.33
2.3
Review the AP Physics test 2 correct answers.