BYU Physical Science 100 Exam with all Correct & 100%
Verified Answers |Latest Version |Already Graded A+
How do we gain knowledge ✔Correct Answer-1) authority...we get to learn from others but
different viewpoints can conflict and we cannot resolve competing claims
2) Intuition... knowledge given to us outside our 5 senses...can be strong, life changing and
meaningful but can't be testing under public
scrutiny and hard to describe to someone else
3) Reason..
Six Self Evident Truths ✔Correct Answer-1. Existence
2. Causality
3. Position Symmetry
4. Time Symmetry
5. Principle of Noncontradiction
6. Occam's Razor
Existance ✔Correct Answer-the fact or state of having actual or real being
Causality ✔Correct Answer-Causes must always proceed the effect
Position Symmetry ✔Correct Answer-the laws of the universe are not different at different
locations
Time Symmetry ✔Correct Answer-the laws of the universe do not change with time
Principle of Noncontradiction ✔Correct Answer-of two contradictory propositions, both cannot be
true. At least one must be wrong or both
Occam's Razor ✔Correct Answer-The philosophy that the simplest explanation is usually the
correct one if both are logical and explain the phenomenon equally well
Four fundamental forces ✔Correct Answer-Strong nuclear- binds neutrons and protons together,
also holds the nucleus together
Weak nuclear- causes radioactive decay
Electromagnetic- Dominates the world we live in, acts on anything charged, holds atoms, molecules
and humans together. RESPONSIBLE FOR SLIDING FRICTION AND CONTACT FORCES. Acts on charges
at rest and at motion.
Gravity- Dominate force on big things like mountains and planets
Newton's First Law of Motion ✔Correct Answer-Every object at rest of in a uniform motion will
remain in that state of motion unless acted upon by unbalanced forces
Uniform motion ✔Correct Answer-Motion at a constant speed in a straight line
, Velocity ✔Correct Answer-Speed and direction, or the speed in a particular direction
Acceleration ✔Correct Answer-a change in an objects velocity... it can increase speed or changes
the direction of the object motion. ANY DEPARTURE FROM UNIFORM MOTION is ACCELERATED
MOTION
-you always accelerate in the direction of the imbalanced force
Newton's Second Law ✔Correct Answer-F=ma or a=f/m
Newton's Third Law ✔Correct Answer-Forces only occur only when at least two things interact
with each other.
-For every action there is an equal and opposite reaction
-force is the same for all people/things in an interaction
Orbiting ✔Correct Answer-falling with "style"
Why do objects of different mass fall at the same speed? ✔Correct Answer-objects accelerate at
the same rate which means that the force of gravity on the larger object is greater than the force of
gravity on the rock
Electrical Force Law ✔Correct Answer-f= kQq/d^2
-k is the electrical force constant
Isulator ✔Correct Answer-material in which electric charges can not move easily...does not allow
electrons to flow through it
conductor ✔Correct Answer-a material that allows electrons to flow through it
weight ✔Correct Answer-A measure of the gravitational force exerted on an object. w=mg
Contact force ✔Correct Answer-first initially caused by the repulsion of electrons but since
electrons move around a lot, it is the repulsion of PROTONS
basically the electromagnetic repulsion between the electrons of one atom and the next/ this
prevents gravity from condensing everything on earth to a super small dense ball of matter
Gravitational Force ✔Correct Answer-WEIGHT
Explain why a rocket accelerates upwards using Newtons second law ✔Correct Answer-The thrust
exceeds the force of gravity so the rocket accelerates upwards
Use Newtons third law to describe the relative strengths of the force of the hot gas on the rocket and
the force of the rocket on the hot gas ✔Correct Answer-The rocket and gas exert forces on each
other that are equal in strength but opposite in direction
Use Newtons second law to explain why the rocket and gas do not have the same speed ✔Correct
Answer-the hot gas comes blasting out way faster than the rocket move because the gas has a much
smaller mass
Verified Answers |Latest Version |Already Graded A+
How do we gain knowledge ✔Correct Answer-1) authority...we get to learn from others but
different viewpoints can conflict and we cannot resolve competing claims
2) Intuition... knowledge given to us outside our 5 senses...can be strong, life changing and
meaningful but can't be testing under public
scrutiny and hard to describe to someone else
3) Reason..
Six Self Evident Truths ✔Correct Answer-1. Existence
2. Causality
3. Position Symmetry
4. Time Symmetry
5. Principle of Noncontradiction
6. Occam's Razor
Existance ✔Correct Answer-the fact or state of having actual or real being
Causality ✔Correct Answer-Causes must always proceed the effect
Position Symmetry ✔Correct Answer-the laws of the universe are not different at different
locations
Time Symmetry ✔Correct Answer-the laws of the universe do not change with time
Principle of Noncontradiction ✔Correct Answer-of two contradictory propositions, both cannot be
true. At least one must be wrong or both
Occam's Razor ✔Correct Answer-The philosophy that the simplest explanation is usually the
correct one if both are logical and explain the phenomenon equally well
Four fundamental forces ✔Correct Answer-Strong nuclear- binds neutrons and protons together,
also holds the nucleus together
Weak nuclear- causes radioactive decay
Electromagnetic- Dominates the world we live in, acts on anything charged, holds atoms, molecules
and humans together. RESPONSIBLE FOR SLIDING FRICTION AND CONTACT FORCES. Acts on charges
at rest and at motion.
Gravity- Dominate force on big things like mountains and planets
Newton's First Law of Motion ✔Correct Answer-Every object at rest of in a uniform motion will
remain in that state of motion unless acted upon by unbalanced forces
Uniform motion ✔Correct Answer-Motion at a constant speed in a straight line
, Velocity ✔Correct Answer-Speed and direction, or the speed in a particular direction
Acceleration ✔Correct Answer-a change in an objects velocity... it can increase speed or changes
the direction of the object motion. ANY DEPARTURE FROM UNIFORM MOTION is ACCELERATED
MOTION
-you always accelerate in the direction of the imbalanced force
Newton's Second Law ✔Correct Answer-F=ma or a=f/m
Newton's Third Law ✔Correct Answer-Forces only occur only when at least two things interact
with each other.
-For every action there is an equal and opposite reaction
-force is the same for all people/things in an interaction
Orbiting ✔Correct Answer-falling with "style"
Why do objects of different mass fall at the same speed? ✔Correct Answer-objects accelerate at
the same rate which means that the force of gravity on the larger object is greater than the force of
gravity on the rock
Electrical Force Law ✔Correct Answer-f= kQq/d^2
-k is the electrical force constant
Isulator ✔Correct Answer-material in which electric charges can not move easily...does not allow
electrons to flow through it
conductor ✔Correct Answer-a material that allows electrons to flow through it
weight ✔Correct Answer-A measure of the gravitational force exerted on an object. w=mg
Contact force ✔Correct Answer-first initially caused by the repulsion of electrons but since
electrons move around a lot, it is the repulsion of PROTONS
basically the electromagnetic repulsion between the electrons of one atom and the next/ this
prevents gravity from condensing everything on earth to a super small dense ball of matter
Gravitational Force ✔Correct Answer-WEIGHT
Explain why a rocket accelerates upwards using Newtons second law ✔Correct Answer-The thrust
exceeds the force of gravity so the rocket accelerates upwards
Use Newtons third law to describe the relative strengths of the force of the hot gas on the rocket and
the force of the rocket on the hot gas ✔Correct Answer-The rocket and gas exert forces on each
other that are equal in strength but opposite in direction
Use Newtons second law to explain why the rocket and gas do not have the same speed ✔Correct
Answer-the hot gas comes blasting out way faster than the rocket move because the gas has a much
smaller mass
