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WorksheetsFinal Exam SCPY 180 2020
Total questions: 76
Worksheet time: 18hrs 52mins
ID ONLY
Confirmation of your email address. It has to be the same as the one you use for Quizizz registration, and will be used for score report notification. Misspelling will cause delay for score/grade announcement and any excuse cannot be accepted.
As shown by a video clip in the class, Destruction of "Tacoma bridge" largely demonstrates what concept?
Resonance
Total Reflection
Nuclear radiation
Critical angle
The number of cycles per second is known as
Amplitude
Compression
Frequency
Wavelength
Waves with oscillation/displacement in the same direction as travel/energy transfer are
Longitudinal
Electromagnetic
Transverse
Mechanical
Waves with displacement perpendicular to the direction of propagation/energy transfer are
Longitudinal
Oscilliation
Transverse
Vacuum
Concave lenses produce...
only virtual images
virtual or real images
only real images
inverted images
What type of lens do humans have in their eyes?
concave lens
convex lens
A student is 2.50m away from a convex lens while her image appears 1.80m away from the lens on the opposite side. What is the focal length? [Approximation required]
1.05m
2.50m
1.39m
0.72m
ABC is an equilateral triangle. Charges +q are placed at each corner. The electric intensity at O will be
4π∈01(r2q)
4π∈01(rq)
4π∈01(r23q)
zero
A laser printer has the imaging drum to be ..., in order to repel the toner powder.
negatively charged
positively charged
neutralised
cleaned
Toner consists of fine particles of dry plastic powder mixed with carbon black or coloring agents. The toner particles are ..... charged inside the toner cartridge
negatively
positively
neutrally
vividly
Two charges are 20 cm apart and feel a force of 600 N. if the distance between them becomes 40 cm, what is the new value of the force?
600
150
300
450
Electric field is a ..(A).. quantity.
Voltage is a ..(B).. quantity.
What are A and B respectively?
vector and vector
vector and scalar
scalar and vector
scalar and scalar
Amper's law states that
total current enclosed by a current carrying loop is zero
total magnetic field over a closed loop is equal to current carrying loop is permiability * current
total electric field over a closed loop is equal to current carrying loop is permiability * current
total current over a closed loop is equal to magnetic field enclosed by loop * permiability
Wave-particle duality emphasizes on the fact that
a wave can show wave behavior
a particle can show particle behavior
a wave can some times show the property of particle
a wave can some times show the property of wave and matter both
From Compton experiment, it proves that photons have energy and ..... just as material particles do.
Momentum
Frequency
Wavelength
Electric field
The most common three types of radiation associated with nuclear disintegration are ____________, _____________, and _____________.
alpha, beta, and gamma
alpha, beta, and half-life
beta, gamma, and half-life
beta, gamma, and delta
What is the type of radiographic anatomy that uses special x-ray equipment to obtain image data from different angles around the body and then uses computer processing of the information to show a cross-section of body tissues and organs. This is one of the best tools for studying the chest and abdomen
X- ray
PET scan
CT/CAT scan
MRI
What is the type of radiographic anatomy that uses high frequency sound waves to produces images. This would be used to look at reproductive system parts and babies in the womb.
X- ray
PET scan
CT/CAT scan
MRI
Ultrasound/sonography
Which of the following scans does not use radiation?
Note: Radiation in this questions refers to radioactivity as the source of radiation.
MRI
CT scan
PET scan
X-ray
De Broglie equation
relates the momentum of a mass to its wavelength
relates the energy of a mass to its density
relates the frequency of a mass to its radioactivity
relates the work function of a mass to its wavelength
If waves can behave like particles, then particles can behave like a wave. This is the idea behind...
Quantization of Energy
Photoelectric Effect
Compton Effect
deBroglie Waves
Believed that electrons travelled around the nucleus in definite paths.
Niels Bohr
Ernest Rutherford
Modern Atomic Theory
A football (0.4kg), a tennis ball (0.055 kg) and a ping-pong ball (0.03kg) are thrown at the same speed to an observer. Which one will have the shortest de Broglie wavelength to be detected by the observer?
football
tennis ball
pin-pong ball
all have the same de Broglie wavelength
When an electron absorbs enough energy, it jumps up to a higher level. This is called
absorption state
excitation state
emission state
relaxation state
Which scientist discovered the electrons?
Dalton
Thomson
Atristotle
Bohr
Which of the following is/are conclusions based on Rutherford’s gold foil experiment?
Atom is mostly empty space
The nucleus is positively charged
The atom has a small dense nucleus
All answers are correct
What did James Chadwick discover?
neutrons
electrons
positron
protons
A loop of wire is placed near a current carrying wire as shown below. Which of the following actions will NOT produce an induced current in the loop?
Moving the loop towards the wire
Moving the loop away from the wire
Moving the loop parallel to the wire
Increasing the electric current in the wire
Which of these would you mostly associate with Michael Faraday?
the study of planets
the theory of evolution
electricity and electromagnetism
the structure of the atom
What is designed to change electrical energy into kinetic energy?
A. capacitor
B. generator
C. motor
D. transformer
Why might a current-carrying wire be placed between a magnetic field?
To increase the current from the interaction of magnetic fields
To increase the voltage from the interaction of magnetic fields
To produce a force from the interaction of magnetic fields
What direction is the force/motion in the following diagram?
NOTE: green = magnetic field line
orange = wire carrying charges
violet = gravitational field
Perpendicular to the magnets
Downwards
Parallel and through the magnets
Name one factor that does not affect the size of a force in on a current-carrying conductor placed in a magnetic field?
Gravity
Magnetic flux density/size of magnetic field
Size of the current
Length of the conductor
A 20 cm section of wire with a current of 8 A is at 90 degrees to a 0.1 T magnetic field. What direction is the force and calculate the size of it? F = BIl
NOTE: magnetic field pointing to east
wire carrying charges to the north.
up, 0.1 x 8 A x 20 cm = 16 N
down, 0.1 x 8 A x 20 cm = 16 N
down, 0.1 x 8 A x 0.20 m = 0.16 N
up, 0.1 x 8 A x 0.20 m = 0.16 N
What type of device is being shown?
Electromagnet
Electric motor
Electric generator
Electromagnetic Induction
In this figure, determine the magnetic field generated by the wire by identifying the magnetic north pole. Note that the wire is made of aluminum. Which part represents the magnetic north pole?
the head of the nail
the bottom of the nail
No magnetic field generated
the magnetic field generated inside the battery instead.
In vacuum,
both sound waves and light waves can propagate.
sound waves can propagate but light waves cannot.
light waves can propagate but sound waves cannot
light waves and sound waves can propagate.
Sounds that are above the normal hearing range of humans are called:
Perisonic
Supersonic
Hyposonic
Ultrasonic
The number of sound wave peaks that pass a given point per unit time is referred to as:
Fortitude
Frequency
Treble
Amplitude
Which one is correct about Sonar and Radar?
Sonar uses reflection from sound waves but Radar uses reflection from radio waves.
Sonar and Radar use reflection from sound waves.
Sonar and Radar use reflection from radio waves.
Both do not use reflections of waves at all.
Ampere's Law states that for any closed loop path, the sum of the length elements times the magnetic field in the direction of the length element is equal to the permeability times the electric ..x..... enclosed in the loop. What is "x" ?
current
charge
field
flux
The Biot-Savart Law relates <x> to the <y> which are their sources. In a similar manner, Coulomb's law relates electric fields to the point charges. What are x and y respectively.
magnetic fields and currents
currents and magnetic fields.
magnetic fluxes and currents
currents and magnetic fluxes
An exploration ship is sent to determine the depth of a sea. It uses to a sonar ping sent downward. It is found that the ping time is 500 ms. Given that the speed of sound in water is 1500m/s, Determine the depth of the sea at that location in meter.
375
750
340
1500
The diagram above shows a point, P, located midway between two oppositely charged parallel plates.
If an electron is introduced at point P, the electron will
accelerate toward the negatively charged plate
travel at constant speed toward the negatively charged plate
travel at constant speed toward the positively charged plate
accelerate toward the positively charged plate
The diagram below shows the arrangement of three charged hollow metal spheres, A, B, and C. The arrows indicate the direction of the electric forces acting between the spheres. At least two of the spheres are positively charged. Which sphere, if any, could be negatively charged?
sphere A
sphere B
sphere C
no sphere
A moving electron is deflected by two oppositely charged parallel plates, as shown in the diagram above.
The electric field between the plates is directed from
C to D
D to C
A to B
B to A
Robert Andrews Millikan was an American experimental physicist honored with the Nobel Prize for Physics in 1923 for the measurement of <x>, and for his work on the photoelectric effect. What is <x>?
the elementary electric charge
magnetic permeability
the mass of proton
the Planck constant
Photoelectric effect: The minimum energy required to eject an electron from the surface is called the photoelectric <x>. what is <x>?
work function
kinetic energy
threshold frequency
stopping voltage
Publicized early in the debate about whether light was composed of particles or waves, a wave-particle dual nature soon was found to be characteristic of electrons as well. The evidence for the description of light as waves was well established at the turn of the century when <x> introduced firm evidence of a particle nature as well. What is <x>?
the photoelectric effect
the Compton's experiment
the Planck's blackbody radiation
the Neil Bohr 's model
When using a converging lens, the image's height and the object's height can be identical if ...
the object distance is equal to the focal length.
the object distance is equal to two times the focal length.
the object distance is less than the focal length.
the object is placed at infinity.
Image formation by a converging lens: when plotting the graph of the inverse of object distance (1/v) versus the inverse of the image distance (1/u). The graph appears to be ..
a line passing through the origin.
a parabola curve
an exponential curve
a line with a slope of 45 degrees downward
Without modfication, Geiger counters has low efficiency to detect ...
Alpha radiation
negative beta radiation
positive beta radiation
x-ray radiation
What is used to change Mercury into Gold (Au)
electron
proton
neutrol
alpha
Uranium-238 undergoes multiple nuclear decay to lead (PB-206). How many alpha particles are generated from the whole process?
7
8
9
10
Which of the following is the SI unit for electric current?
Ohm
Watt
Ampere
Volt
