AC HPAT PHYSICS EXAM QUESTIONS WITH FULLY SOLVED
ANSWERS.
1) What is the difference between constant, instantaneous, and average speed? --
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Answer ✔✔ · constant speed is where the speed is the same throughout and
_ _ _ _ _ _ _ _ _ _ _ _ _ _
instantaneous speed is speed given at any moment and average speed is a total
_ _ _ _ _ _ _ _ _ _ _ _ _ _
distance traveled divided by the amount of time it took to travel it.
_ _ _ _ _ _ _ _ _ _ _ _
2) Newtons Laws -- Answer ✔✔ Newton's first law states that every object will
_ _ _ _ _ _ _ _ _ _ _ _ _
remain at rest or in uniform motion in a straight line unless compelled to change
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
its state by the action of an external force. The second law states that the
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
acceleration of an object is dependent upon two variables - the net force acting
_ _ _ _ _ _ _ _ _ _ _ _ _ _
upon the object and the mass of the object.
_ _ _ _ _ _ _ _
The third law states that for every action (force) in nature there is an equal and
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
opposite reaction. _
3) Ohm's Law -- Answer ✔✔ · Ohm's law is a law that states that the voltage across a
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_resistor is directly proportional to the current flowing through the resistance.
_ _ _ _ _ _ _ _ _ _ _
Ohm's law is named for German physicist Georg Ohm (1789-1854). A simple
_ _ _ _ _ _ _ _ _ _ _ _
formula, Ohm's law, is used to show the relationship of current, voltage, and
_ _ _ _ _ _ _ _ _ _ _ _ _
resistance.
4) Kirchoff's Law -- Answer ✔✔ · Kirchhoff's Laws are: A hot solid, liquid or gas,
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
under high pressure, gives off a continuous spectrum. A hot gas under low
_ _ _ _ _ _ _ _ _ _ _ _ _
pressure produces a bright-line or emission line spectrum. A dark line or
_ _ _ _ _ _ _ _ _ _ _ _
absorption line spectrum is seen when a source of a continuous spectrum is
_ _ _ _ _ _ _ _ _ _ _ _ _
viewed behind a cool gas under pressure.
_ _ _ _ _ _
5) Law of magnetism -- Answer ✔✔ The most basic law of magnetism is that like
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
poles repel one another and unlike poles attract each other; this can easily be seen
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
by attempting to place like poles of two magnets together.
_ _ _ _ _ _ _ _ _
, 6) Conventional current -- Answer ✔✔ · assumes that current flows out of the _ _ _ _ _ _ _ _ _ _ _ _ _
positive terminal, through the circuit and into the negative terminal of the source.
_ _ _ _ _ _ _ _ _ _ _ _ _
... Electron Flow is what actually happens, and electrons flow out of the negative
_ _ _ _ _ _ _ _ _ _ _ _ _ _
terminal, through the circuit and into the positive terminal of the source
_ _ _ _ _ _ _ _ _ _ _
7) Oersted's Law -- Answer ✔✔ · Ørsted's law, or Oersted's Law states that when a
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
steady electric current pass through a wire it creates a magnetic field around it.
_ _ _ _ _ _ _ _ _ _ _ _ _
8) kinetic friction -- Answer ✔✔ · Kinetic friction magnitude is directly proportional
_ _ _ _ _ _ _ _ _ _ _ _
to the normal force magnitude and the roughness between the sliding surfaces.
_ _ _ _ _ _ _ _ _ _ _ _
Static friction magnitude is directly proportional to the normal force magnitude
_ _ _ _ _ _ _ _ _ _ _
and the roughness between the sliding surfaces.
_ _ _ _ _ _
9) Alternating current vs direct current -- Answer ✔✔ · AC vs. DC (Alternating
_ _ _ _ _ _ _ _ _ _ _ _ _
Current vs. Direct current) The difference between AC and DC lies in the
_ _ _ _ _ _ _ _ _ _ _ _ _
direction in which the electrons flow. In DC, the electrons flow steadily in a single
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
direction, or "forward." In AC, electrons keep switching directions, sometimes
_ _ _ _ _ _ _ _ _ _
going "forward" and then going "backward."
_ _ _ _ _
10) Boyles Law -- Answer ✔✔ · Boyle's law is a gas law, stating that the pressure and
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
volume of a gas have an inverse relationship. If volume increases, then pressure
_ _ _ _ _ _ _ _ _ _ _ _ _
decreases and vice versa, when temperature is held constant.
_ _ _ _ _ _ _ _
11) Volumetric flow rate -- Answer ✔✔ · the volumetric flow rate (also known as
_ _ _ _ _ _ _ _ _ _ _ _ _ _
volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_passes per unit time; usually represented by the symbol Q (sometimes V̇). The SI
_ _ _ _ _ _ _ _ _ _ _ _ _ _
unit is cubic metres per second (m3/s).
_ _ _ _ _ _
12) Pascals Law -- Answer ✔✔ · Pascal's law basically states that any pressure applied
_ _ _ _ _ _ _ _ _ _ _ _ _ _
to a fluid inside a closed system will transmit that pressure equally in all directions
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
throughout the fluid. This law is the basic principle that causes hydraulic power in
_ _ _ _ _ _ _ _ _ _ _ _ _ _
heavy construction machines to work.
_ _ _ _
13) Bernoulli's Principle -- Answer ✔✔ · Bernoulli's principle is an idea of fluid
_ _ _ _ _ _ _ _ _ _ _ _ _
dynamics. It says that as speed of the fluid increases, pressure decreases. For a
_ _ _ _ _ _ _ _ _ _ _ _ _ _
ANSWERS.
1) What is the difference between constant, instantaneous, and average speed? --
_ _ _ _ _ _ _ _ _ _ _
Answer ✔✔ · constant speed is where the speed is the same throughout and
_ _ _ _ _ _ _ _ _ _ _ _ _ _
instantaneous speed is speed given at any moment and average speed is a total
_ _ _ _ _ _ _ _ _ _ _ _ _ _
distance traveled divided by the amount of time it took to travel it.
_ _ _ _ _ _ _ _ _ _ _ _
2) Newtons Laws -- Answer ✔✔ Newton's first law states that every object will
_ _ _ _ _ _ _ _ _ _ _ _ _
remain at rest or in uniform motion in a straight line unless compelled to change
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
its state by the action of an external force. The second law states that the
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
acceleration of an object is dependent upon two variables - the net force acting
_ _ _ _ _ _ _ _ _ _ _ _ _ _
upon the object and the mass of the object.
_ _ _ _ _ _ _ _
The third law states that for every action (force) in nature there is an equal and
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
opposite reaction. _
3) Ohm's Law -- Answer ✔✔ · Ohm's law is a law that states that the voltage across a
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_resistor is directly proportional to the current flowing through the resistance.
_ _ _ _ _ _ _ _ _ _ _
Ohm's law is named for German physicist Georg Ohm (1789-1854). A simple
_ _ _ _ _ _ _ _ _ _ _ _
formula, Ohm's law, is used to show the relationship of current, voltage, and
_ _ _ _ _ _ _ _ _ _ _ _ _
resistance.
4) Kirchoff's Law -- Answer ✔✔ · Kirchhoff's Laws are: A hot solid, liquid or gas,
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
under high pressure, gives off a continuous spectrum. A hot gas under low
_ _ _ _ _ _ _ _ _ _ _ _ _
pressure produces a bright-line or emission line spectrum. A dark line or
_ _ _ _ _ _ _ _ _ _ _ _
absorption line spectrum is seen when a source of a continuous spectrum is
_ _ _ _ _ _ _ _ _ _ _ _ _
viewed behind a cool gas under pressure.
_ _ _ _ _ _
5) Law of magnetism -- Answer ✔✔ The most basic law of magnetism is that like
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
poles repel one another and unlike poles attract each other; this can easily be seen
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
by attempting to place like poles of two magnets together.
_ _ _ _ _ _ _ _ _
, 6) Conventional current -- Answer ✔✔ · assumes that current flows out of the _ _ _ _ _ _ _ _ _ _ _ _ _
positive terminal, through the circuit and into the negative terminal of the source.
_ _ _ _ _ _ _ _ _ _ _ _ _
... Electron Flow is what actually happens, and electrons flow out of the negative
_ _ _ _ _ _ _ _ _ _ _ _ _ _
terminal, through the circuit and into the positive terminal of the source
_ _ _ _ _ _ _ _ _ _ _
7) Oersted's Law -- Answer ✔✔ · Ørsted's law, or Oersted's Law states that when a
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
steady electric current pass through a wire it creates a magnetic field around it.
_ _ _ _ _ _ _ _ _ _ _ _ _
8) kinetic friction -- Answer ✔✔ · Kinetic friction magnitude is directly proportional
_ _ _ _ _ _ _ _ _ _ _ _
to the normal force magnitude and the roughness between the sliding surfaces.
_ _ _ _ _ _ _ _ _ _ _ _
Static friction magnitude is directly proportional to the normal force magnitude
_ _ _ _ _ _ _ _ _ _ _
and the roughness between the sliding surfaces.
_ _ _ _ _ _
9) Alternating current vs direct current -- Answer ✔✔ · AC vs. DC (Alternating
_ _ _ _ _ _ _ _ _ _ _ _ _
Current vs. Direct current) The difference between AC and DC lies in the
_ _ _ _ _ _ _ _ _ _ _ _ _
direction in which the electrons flow. In DC, the electrons flow steadily in a single
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
direction, or "forward." In AC, electrons keep switching directions, sometimes
_ _ _ _ _ _ _ _ _ _
going "forward" and then going "backward."
_ _ _ _ _
10) Boyles Law -- Answer ✔✔ · Boyle's law is a gas law, stating that the pressure and
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
volume of a gas have an inverse relationship. If volume increases, then pressure
_ _ _ _ _ _ _ _ _ _ _ _ _
decreases and vice versa, when temperature is held constant.
_ _ _ _ _ _ _ _
11) Volumetric flow rate -- Answer ✔✔ · the volumetric flow rate (also known as
_ _ _ _ _ _ _ _ _ _ _ _ _ _
volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_passes per unit time; usually represented by the symbol Q (sometimes V̇). The SI
_ _ _ _ _ _ _ _ _ _ _ _ _ _
unit is cubic metres per second (m3/s).
_ _ _ _ _ _
12) Pascals Law -- Answer ✔✔ · Pascal's law basically states that any pressure applied
_ _ _ _ _ _ _ _ _ _ _ _ _ _
to a fluid inside a closed system will transmit that pressure equally in all directions
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
throughout the fluid. This law is the basic principle that causes hydraulic power in
_ _ _ _ _ _ _ _ _ _ _ _ _ _
heavy construction machines to work.
_ _ _ _
13) Bernoulli's Principle -- Answer ✔✔ · Bernoulli's principle is an idea of fluid
_ _ _ _ _ _ _ _ _ _ _ _ _
dynamics. It says that as speed of the fluid increases, pressure decreases. For a
_ _ _ _ _ _ _ _ _ _ _ _ _ _
