Concordia University PHYS 273 Quiz 2 Question 1)A chair is sliding across a rough horizontal floor

Concordia University

PHYS 273

Quiz 2

Question 1)A chair is sliding across a rough horizontal floor. The chair      a. starts with 100J of kinetic energy and slows down and comes to a stop. What happened to the kinetic energy of the chair?

a) Kinetic energy ever only lasts for short amounts of time. b) The kinetic energy was transformed into heat due to the

friction with the floor.

c)            The kinetic energy was transformed into gravitational potential energy.

d)            The chair’s kinetic energy did not change.

Question 2:

A battery contains 1000 joules of energy. The maximum               a.

amount of work it can do is 1000 joules. This is an example of

Question 3:

a)            the Law of Conservation of Energy.

b)            the First Law of Thermodynamics.

c)            neither the First Law of Thermodynamics nor the Law of Conservation of Energy.

d)            both the First Law of Thermodynamics and the Law of Conservation of Energy.

In Canada which sector uses the most natural gas?          a.

a)            Energy Industry.

b)            Residential.

c)            Commercial and Institutional.

d)            Industrial.

e)            Generation of Electricity.

Question 4:

Dino and Jake are out for a walk together pushing their a.

strollers. They each exert the same force on their strollers. Dino walks twice as far as Jake.

a)            Dino does twice as much work as Jake.

b)            They do the same amount of work

c)            Jake does twice as much work as Dino

d)            Neither of them do any work.

Question 5:

a.

Using the Sankey diagram: Most energy produced by coal is used for

a)            electricity.

b)            transport.

c)            the energy industry.

Question 6:

Net metering     a.

a) Allows you to buy electricity at a lower rate from the provider b) Allows you to sell (or exchange for credit) excess solar

power that you have generated back to the provider.

c)            Is not available in Quebec.

d)            Is only a viable option if you can produce 100% (or more) of the energy you consume.

Question 7:

Which of these does not describe electromagnetic energy?        a.

a)            Electromagnetic energy is sometimes manifest as visible light.

b)            The earth receives electromagnetic energy from the sun.

c)            Gamma rays and radio waves are forms of electromagnetic energy.

d)            Electromagnetic energy is produced when mass is vibrated.

e)            Electromagnetic energy travels in the form of waves.

Question 8:

a.

When fossil fuels form, the different types that form depend on several conditions. Which of these is not a condition?

a)            the pressure conditions while decomposing.

b)            the amount of time decomposing.

c)            the temperature at and around the decomposition. d) the geolocation of the fossil fuel being formed.

e) the type of organic matter decomposing.

Question 9:

a. The part of an oil drilling rig responsible for breaking the rock as the drill penetrates the ground is called,

a)            The derrick

b)            The injection head

c)            The quagmire

d)            The tri cone

e)            The core sampler

Question 10:

Which if these is not true about entropy?             a.

a)            The entropy of an object or system always increases.

b)            The higher the entropy of an object or system, the more disordered it will be.

c)            Entropy is used to state the second law of thermodynamics.

d)            Entropy explains the direction of time in an isolated thermal system.

e)            If the entropy of an isolated system is not changing, then it must have reached equilibrium.