PHYS 204 Final Exam All Possible Questions and Answers Fully
Solved 100% Latest Update Concordia University
The system of measurement used by most of the world is the: - -Metric system
-Which of the following is not a fundamental unit? - -A cubic centimeter
-An equation can be recognized by: - -An equality sign
-A 25-cubic centimeter piece of metal has a mass of 198 grams. What is the density of the
metal? - -7.9 g/cm3
-The Greek symbol "∆" is used frequently in science and engineering. What does this symbol;
normally mean? - -A change
-Which of the following is not a measurement? - -120
-Measurable quantities that change under varying conditions are called: - -Variables
-Phenomena that are measurable and consistent in behavior are called: - -Laws
-Ideas or mathematical formulas that are designed to explain phenomena are called: - -
Theories
-What can we say about the variables, x and y? - -X and y are directly proportional.
-1. A car starts at 2.5 m/s and accelerates to 10.2 m/s. What is the average speed of the car
during the time it accelerates? - -6.4 m/s
-Which of the following statements is consistent with Newton's laws of motion? - -An object in
motion will remain in motion until an external force changes its motion.
-A rock is dropped into a well and hits the water in 2.7 s. How deep is the well? Use the
expression, d = ½gt2, where g is the gravitational constant (9.81 m/s2). - -36 m
-A ball is thrown at an angle of 45°. What is the shape of its trajectory while it is in the air? - -
Parabolic
-Force is given by the expression, F = ma. What are the units of force in metric units? - -kg m/s2
-A 10.6-g piece of silly putty moving at 3.75 m/s in a particular direction collides with a 12.5-g
stationary piece of silly putty. The two pieces of silly putty stick and continue in the same
direction. Ignoring friction, what is the speed of the two pieces moving together. - -1.72 m/s
, -A force of 4.5 N is applied to an object for 2.5 s. What is the impulse? - -11 kg•m/s
-An object moving in circular motion accelerates: - -Toward the center of the circular motion
-Which of the following statements is consistent with the law of universal gravitation? - -The
force of attraction between two objects in the universe is inversely proportional to the square
of their distances, Every object in the universe is attracted to all other objects in the universe,
The force exerted by an object in the universe is directly proportional to its mass.
-An object in circular motion is moving at a speed of 4.75 m/s. If the radius of the circular
motion is reduced to half, what is the new speed if the centripetal acceleration stays the same?
- -3.36 m/s
-A joule per second is: - -A watt, which is a unit of power.
-The expression that relates the change in vertical height, Dh, and the speed of a falling object
is v = √-2g∆h , in which g = 9.81 m/s2 for earth. What is the speed of an object in km/s just
before it hits the ground if it is dropped from a height of 350 meters? Ignore air resistance. - -
0.0829
-Which of the following is a renewable energy source? - -Geothermal
-A golf ball and a bowling ball are dropped simultaneously from a tall building. The instant
before the balls hit the ground, the bowling ball has greater: - -Momentum and kinetic energy
-What factor has the greatest influence on the work required to stop a moving car? - -Its mass
-You load a gun with 10.0-gram bullets. You fire the gun and the muzzle velocity of the bullets
is 500 m/s. What is the kinetic energy of each individual bullet in joules? - -1250
-Which of the following is the least useful form of energy? - -Molecular energy of combustion
products
-What converts the energy of a waterfall into electrical energy? - -Turbines
-You climbed up a certain flight of stairs in 60 seconds. What can we say if you climbed the
same flight of stairs in 45 seconds? - -You would be using more power, but you would be doing
the same amount of work.
-What can we say about energy when we use it in our day-to-day lives? - -Energy is always
conserved, More useful forms of energy are being converted into less useful forms of energy,
Non-renewable sources of energy are being depleted.
Solved 100% Latest Update Concordia University
The system of measurement used by most of the world is the: - -Metric system
-Which of the following is not a fundamental unit? - -A cubic centimeter
-An equation can be recognized by: - -An equality sign
-A 25-cubic centimeter piece of metal has a mass of 198 grams. What is the density of the
metal? - -7.9 g/cm3
-The Greek symbol "∆" is used frequently in science and engineering. What does this symbol;
normally mean? - -A change
-Which of the following is not a measurement? - -120
-Measurable quantities that change under varying conditions are called: - -Variables
-Phenomena that are measurable and consistent in behavior are called: - -Laws
-Ideas or mathematical formulas that are designed to explain phenomena are called: - -
Theories
-What can we say about the variables, x and y? - -X and y are directly proportional.
-1. A car starts at 2.5 m/s and accelerates to 10.2 m/s. What is the average speed of the car
during the time it accelerates? - -6.4 m/s
-Which of the following statements is consistent with Newton's laws of motion? - -An object in
motion will remain in motion until an external force changes its motion.
-A rock is dropped into a well and hits the water in 2.7 s. How deep is the well? Use the
expression, d = ½gt2, where g is the gravitational constant (9.81 m/s2). - -36 m
-A ball is thrown at an angle of 45°. What is the shape of its trajectory while it is in the air? - -
Parabolic
-Force is given by the expression, F = ma. What are the units of force in metric units? - -kg m/s2
-A 10.6-g piece of silly putty moving at 3.75 m/s in a particular direction collides with a 12.5-g
stationary piece of silly putty. The two pieces of silly putty stick and continue in the same
direction. Ignoring friction, what is the speed of the two pieces moving together. - -1.72 m/s
, -A force of 4.5 N is applied to an object for 2.5 s. What is the impulse? - -11 kg•m/s
-An object moving in circular motion accelerates: - -Toward the center of the circular motion
-Which of the following statements is consistent with the law of universal gravitation? - -The
force of attraction between two objects in the universe is inversely proportional to the square
of their distances, Every object in the universe is attracted to all other objects in the universe,
The force exerted by an object in the universe is directly proportional to its mass.
-An object in circular motion is moving at a speed of 4.75 m/s. If the radius of the circular
motion is reduced to half, what is the new speed if the centripetal acceleration stays the same?
- -3.36 m/s
-A joule per second is: - -A watt, which is a unit of power.
-The expression that relates the change in vertical height, Dh, and the speed of a falling object
is v = √-2g∆h , in which g = 9.81 m/s2 for earth. What is the speed of an object in km/s just
before it hits the ground if it is dropped from a height of 350 meters? Ignore air resistance. - -
0.0829
-Which of the following is a renewable energy source? - -Geothermal
-A golf ball and a bowling ball are dropped simultaneously from a tall building. The instant
before the balls hit the ground, the bowling ball has greater: - -Momentum and kinetic energy
-What factor has the greatest influence on the work required to stop a moving car? - -Its mass
-You load a gun with 10.0-gram bullets. You fire the gun and the muzzle velocity of the bullets
is 500 m/s. What is the kinetic energy of each individual bullet in joules? - -1250
-Which of the following is the least useful form of energy? - -Molecular energy of combustion
products
-What converts the energy of a waterfall into electrical energy? - -Turbines
-You climbed up a certain flight of stairs in 60 seconds. What can we say if you climbed the
same flight of stairs in 45 seconds? - -You would be using more power, but you would be doing
the same amount of work.
-What can we say about energy when we use it in our day-to-day lives? - -Energy is always
conserved, More useful forms of energy are being converted into less useful forms of energy,
Non-renewable sources of energy are being depleted.
