Questão 1
Questão
What is the Phlogiston Theory and when was it created?
Responda
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Similar to previous theory, but states that it doesn't have mass. It cannot be created nor destroyed. lt flows from warm to cold substances; late 1700s
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Heat is a fluid known as phlogiston, flows between different objects as "heat". This was disproved because it would mean heat has mass, which it doesn't.; 1700s
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Heat is a form of energy and can be converted to different forms (kinetic, chemical, etc.). Specific heat capacity was created at this time; 1800s
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The more particles move, the more thermal energy is created. Energy cannot be created nor destroyed and it comes in many forms; modern day
Questão 2
Questão
What is the Caloric Theory and when was it created?
Responda
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Similar to previous theory, but states that it doesn't have mass. It cannot be created nor destroyed. lIt flows from warm to cold substances; late 1700s
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Heat is a fluid known as phlogiston, flows between different objects as "heat". This was disproved because it would mean heat has mass, which it doesn't; 1700s
-
Heat is a form of energy and can be converted to different forms (kinetic, chemical, etc.). Specific heat capacity was created at this time; 1800s
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The more particles move, the more thermal energy is created. Energy cannot be created nor destroyed and it comes in many forms; modern day
Questão 3
Questão
What did Count Rumford find out and when?
Responda
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The more particles move, the more thermal energy is created. Energy cannot be created nor destroyed and it comes in many forms; modern day
-
Heat is a fluid known as phlogiston, flows between different objects as "heat". This was disproved because it would mean heat has mass, which it doesn't; 1700s
-
Similar to previous theory, but states that it doesn't have mass. It cannot be created nor destroyed. lIt flows from warm to cold substances; late 1700s
-
Heat is a form of energy and can be converted to different forms (kinetic, chemical, etc.). Specific heat capacity was created at this time; 1800s
Questão 4
Questão
What is the Kinetic Molecular theory and when was it created?
Responda
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Heat is a fluid known as phlogiston, flows between different objects as "heat". This was disproved because it would mean heat has mass, which it doesn't; 1700s
-
Heat is a form of energy and can be converted to different forms (kinetic, chemical, etc.). Specific heat capacity was created at this time; 1800s
-
Similar to previous theory, but states that it doesn't have mass. It cannot be created nor destroyed. lIt flows from warm to cold substances; late 1700s
-
The more particles move, the more thermal energy is created. Energy cannot be created nor destroyed and it comes in many forms; modern day
Questão 5
Questão
Heat is the [blank_start]total[blank_end] kinetic energy of the particles. Temperature is the [blank_start]average[blank_end] kinetic energy of the particles.
Responda
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total
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average
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product of the
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sum of the
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average
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total
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sum of the
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product of the
Questão 6
Questão
Check all the units that heat is measured in:
Responda
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Kilojoules
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Joules
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Celcius
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Farenhiet
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Kelvin
Questão 7
Questão
Check all of the units that temperature is measured in:
Responda
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Farenhiet
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Celcius
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Joules
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Kilojoules
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Kelvin
Questão 8
Questão
Someone moved an object. They applied a force of 12 N and it moved 800 cm. What was the work being done on the object?
Questão 9
Questão
It took 1300 J to move an object 3.2 m. What was the force applied?
Responda
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2.4615 x 10(-3) N
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406.25 N
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4.0625 N
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4160 N
Questão 10
Questão
Someone is holding a suitcase above the ground and walking down the flat hallway. Work is being applied in this situation.
Questão 11
Questão
Check all that are scalar quantities:
Responda
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Distance
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Time
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Speed
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Velocity
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Acceleration
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Displacement
Questão 12
Questão
Check all that are vector quantities:
Responda
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Displacement
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Distance
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Speed
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Acceleration
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Velocity
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Time
Questão 13
Questão
An object moved 500 m in 3 seconds, what is the object's speed?
Responda
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167 m/s
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1.66 m/s
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0.6 m/s
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0.006 m/s
Questão 14
Questão
- Displacement is [blank_start]the shortest distance[blank_end] between two points
- Distance is [blank_start]any path[blank_end] between two points
- With vector quantities, North, East and Up are [blank_start]POSITIVE[blank_end] directions, while South, West and Down are [blank_start]NEGATIVE[blank_end] directions
Responda
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the shortest distance
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the longest path
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any path
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any path
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the longest distance
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the shortest distance
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positive
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negative
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scalar
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vector
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negative
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positive
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vector
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scalar
Questão 15
Questão
Point 1 is at 8.0 m[N] and point 2 is at 3.0 m [S]. I ride my bike and it takes 4.5 seconds to go from point 1 to point 2. What is my bike's velocity?
Responda
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- 2.44 m/s
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2.44 m/s
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0.36 m/s
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- 0.36 m/s
Questão 16
Questão
I start speeding up on a highway. At first, I am going 40 km/h[E] and after 5 seconds I make it to 95 k/m[E]. What is my acceleration?
Responda
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39855 km/h(2)
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39855072 km/h(2)
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39855 m/s(2)
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39855072 m/s(2)
Questão 17
Questão
Kinetic energy is the energy of [blank_start]MOVEMENT[blank_end]
Potential energy is [blank_start]STORED[blank_end] energy:
- [blank_start]Elastic[blank_end] potential energy is when an object is bend/compressed and has stored energy to return to its original shape
- [blank_start]Chemical[blank_end] potential energy is the stored energy in the bonds of chemicals
- [blank_start]Gravitational[blank_end] potential energy is the stored energy from the attraction between two objects
Mass is measured in [blank_start]kg[blank_end] and is the [blank_start]amount of space something takes up[blank_end]. Weight is the [blank_start]mass + gravity[blank_end].
Responda
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movement
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light
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chemical bonds
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air waves
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stored
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chemically bonded
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invisible
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Elastic
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Chemical
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Gravitational
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Chemical
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Elastic
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Gravitational
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Gravitational
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Elastic
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Chemical
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kg
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L
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mL
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N
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amount of space something takes up
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amount of space + gravity
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amount of energy something has
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amount of space + gravity
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amount of space something takes up
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amount of energy something has
Questão 18
Questão
Some rules of energy:
- [blank_start]No[blank_end] machine is 100% efficient
- Energy [blank_start]cannot[blank_end] be [blank_start]created nor destroyed[blank_end], only [blank_start]transferred[blank_end]
Responda
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No
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Some
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All
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cannot
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can
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created nor destroyed
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created
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destroyed
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converted
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transferred
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created and destroyed
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created
-
destroyed
Questão 19
Questão
What are the energy conversions in this situation?
A diver jumps off a spring board into the water below.
Responda
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Chemical > Elastic > Gravitational > Kinetic
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Kinetic > Gravitational > Elastic > Chemical
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Gravitation > Chemical > Kinetic > Elastic
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Gravitational > Elastic > Kinetic > Chemical
Questão 20
Questão
A 2kg ball is held above a table. It is 0.30 m above the table, and the table is 300 cm above the ground. What is the ball's gravitational potential energy relative to the ground?
Responda
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64.746 J
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7445.8 J
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64746 J
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7.4458 J
Questão 21
Questão
A 4.2 kg ball was thrown and moved 0.7 m/s. What is the ball's kinetic energy?
Responda
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2.058 J
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1.029 J
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2.940 J
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1.470 J
Questão 22
Questão
Label the Pendulum with the different forms of energy present.
Responda
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All gravitational, no kinetic
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All kinetic, no gravitational
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50/50 gravitational and kinetic
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50/50 gravitational and kinetic
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All kinetic, no gravitational
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All gravitational, no kinetic
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50/50 gravitational and kinetic
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All kinetic, no gravitational
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All gravitational, no kinetic
Questão 23
Questão
A car takes in 12000 J of chemical energy to run. 8900 J is converted to kinetic energy to make the wheels turn. What is the efficiency of this machine?
Responda
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0.742 %
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74.2 %
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7.42%
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742%
Questão 24
Questão
Someone drops a 23 kg rock down a cliff. The cliff is 400 m high. If the rock has 89,000 J of kinetic energy when breaking apart at the bottom, how much energy is converted to other forms?
Responda
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0.986 %
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98.6 %
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1.38 %
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0.014 %