Modern Physics (PHYS 250) 2025
Actual exam (Testing Real Exam
Questions)and verified Answers (
100% accurate) GET IT RIGHT!!
Save
Terms in this set (84)
,HW1. A slow g'(x) + 6
freight train chugs
along a straight v(Eng/Ground) = v(Eng/Train) +
track. The distance v(Train/Ground)
it has traveled
after x hours is
given by a
function g(x). An
engineer is
walking along the
top of the box
cars at the rate of
6 km/hr in the
same direction as
the train is moving.
The speed of the
man (in km/hr)
relative to the
ground is:
, NOTICE Light is a wave: an oscillation in
time and space of the E and B fields.
A stationary charge produces a time
HW2. Explain why dependent E-field.
accelerating A constant velocity charge constitutes
charges generate a current and produces a time-
light but charges independent B-field.
that are stationary Therefore it is necessary for a charge to
or moving at a accelerate to produce light.
constant velocity Note: One can do work on a charge by
do not. "dragging" it through an E-field at
CONSTANT velocity. Thus, in general,
doing work on a charge is NOT enough
to guarantee production of light!
, HW2. It is the f = c/lambda = 7.5e14 Hz
thermal motion of
charged particles
at the sun's
surface that
produces the
electromagnetic
radiation emitted
by the sun (use
c=3.0 E8 m/s). To
generate a blue
light at 400nm, at
what frequency
would a charged
particle have to
be vibrating back
and forth?
Actual exam (Testing Real Exam
Questions)and verified Answers (
100% accurate) GET IT RIGHT!!
Save
Terms in this set (84)
,HW1. A slow g'(x) + 6
freight train chugs
along a straight v(Eng/Ground) = v(Eng/Train) +
track. The distance v(Train/Ground)
it has traveled
after x hours is
given by a
function g(x). An
engineer is
walking along the
top of the box
cars at the rate of
6 km/hr in the
same direction as
the train is moving.
The speed of the
man (in km/hr)
relative to the
ground is:
, NOTICE Light is a wave: an oscillation in
time and space of the E and B fields.
A stationary charge produces a time
HW2. Explain why dependent E-field.
accelerating A constant velocity charge constitutes
charges generate a current and produces a time-
light but charges independent B-field.
that are stationary Therefore it is necessary for a charge to
or moving at a accelerate to produce light.
constant velocity Note: One can do work on a charge by
do not. "dragging" it through an E-field at
CONSTANT velocity. Thus, in general,
doing work on a charge is NOT enough
to guarantee production of light!
, HW2. It is the f = c/lambda = 7.5e14 Hz
thermal motion of
charged particles
at the sun's
surface that
produces the
electromagnetic
radiation emitted
by the sun (use
c=3.0 E8 m/s). To
generate a blue
light at 400nm, at
what frequency
would a charged
particle have to
be vibrating back
and forth?
