What is the velocity of electromagnetic radiation? correct answers 3x10^8 m/sec
The ______ of electromagnetic radiation is constant. correct answers velocity
If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its frequency must _____. correct answers dec...
Biophysics Final || with 100% Verified Solutions.
What is the velocity of electromagnetic radiation? correct answers 3x10^8 m/sec
The ______ of electromagnetic radiation is constant. correct answers velocity
If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its
frequency must _____. correct answers decrease by half
The energy of a photon is directly proportional to its _____ correct answers frequency
The lowest energy range of electromagnetic spectrum is _____. correct answers radiowaves
If 4 waves pass a point in a second, and the distance between 2 peaks of wave is 2 meters, what
is the velocity? correct answers 8 meters/sec
If an electromagnetic wave has a frequency of 2 Hz, what is the wavelength? correct answers
1.5x10^8 meters
If an electromagnetic wave has a wavelength of 1.2x10^-4 meters, what is the frequency of this
wave? correct answers 2.5x10^12 meters/sec
One cycle per second is the definition of the unit: correct answers Hertz
If there are 3.5 waves traveling past a point in 3.5 seconds, what is the frequency? correct
answers 1 Hz
An object moves 45 meters in 5.4 seconds, at what speed is this object moving? correct answers
.4 = 8.33 m/sec
If one pushes a wheelchair 80 meters in 9 seconds, what is the velocity of the wheelchair? correct
answers = 8.88 m/sec
What is the force on a 65 kg object accelerated at 14 meters/sec? correct answers F = m x a
65 x 14 = 910 Newtons
If the force on a 90kg object is 34 Newtons, what is the acceleration rate? correct answers
= 0.37 m/sec^2
A clap of thunder associated with lightening has a frequency of 650 Hz. What is its velocity if
the wavelength is 7.5 meters? correct answers 650 x 7.5 = 4875 meters/sec
If an ultrasound wave is traveling at a frequency of 3,500,000 Hz, and the wavelength is 0.003
meters, what is its velocity? correct answers 3,500,000 x 0.003 = 10,500 m/sec
,What is the frequency associated with a radio wave that has a wavelength of 120 meters? correct
answers 3x10^ = 2.5x10^6 Hz
What is the wavelength of an x-ray photon that has a frequency of 2.4x10^15 Hz? correct
answers 3x10^.4x10^15 = 1.25x10^-7 meters
If 5 x-rays pass a point in 0.1 seconds, what is the frequency in Hz? correct answers .1 = 50
Hz
If 900 x-rays pass a point in 0.0001 seconds, what is the wavelength in meters? correct answers
.0001 = 9x10^6
3x10^x10^6 = 33 meters
mechanics correct answers objects at rest (statics) and objects in motion (dynamics)
velocity correct answers rate at which an object is moving (distance traveled in a specific time
period)
velocity equation correct answers v = distance / time
Newton's First Law correct answers Objects will remain at rest or in a uniform motion in a
straight line unless acted upon by an unbalanced force
Newton's Second Law correct answers The acceleration of an object depends on its mass and the
magnitude of force applied to it.
force equation correct answers f = mass x acceleration
a = force / mass
m = force / acceleration
Newton's Third Law correct answers For every action there is an equal and opposite reaction.
energy correct answers the ability to do work
Law of Conservation of Energy correct answers Energy cannot be created or destroyed, only
converted to a different type of energy
kinetic energy correct answers energy of motion
potential energy correct answers stored energy
forms of energy include: correct answers mechanical, thermal, radiant, electrical, chemical,
electromagnetic, nuclear
Wavelength and frequency are correct answers inversely related
, Energy and frequency are correct answers directly related
waves correct answers any disturbance that transmits energy through matter or space
examples of waves correct answers sound waves, light waves, water
Electromagnetic radiation travels like a ______, interacts like a _______. correct answers wave;
particle
3 characteristics of waves correct answers amplitude, wavelength, frequency
amplitude correct answers height of a wave
wavelength correct answers The distance between two corresponding parts of a wave (peak to
peak; trough to trough)
frequency correct answers number of cycles per second
velocity formula (the wave formula) correct answers v = frequency x wavelength
f=v/w
w=v/f
Standing in the water at the beach, you note that one wave strikes you every 2 seconds. You
estimate that the crests of the waves are about 5 feet apart. What is the speed of this series of
waves in feet-per-second? correct answers v = 2.5 feet/sec
The waves at the beach are traveling at a speed of 2 meters per second. The crests of the waves
are 20 meters apart. What is the frequency of these waves? correct answers f = 0.1 Hz
electromagnetic waves travel at the speed of _____ correct answers light (3x10^8 m/sec)
A particular shade of green light has a wavelength of 5 X 10-7 meters. How many waves of this
green light strike you each second (frequency) in hertz? correct answers f = 6x10^14 Hz
The frequency of red light is 4.6 x 10^14 hertz, what is the wavelength of this electromagnetic
wave? correct answers w = 6.5x10^-7 meters
waves with lower frequency will have ______ wavelengths correct answers longer
waves with higher frequency will have ______ wavelengths correct answers shorter
any particle in motion creates correct answers a magnetic field
spin correct answers motion of electrons, protons and neutrons
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