Physics Properties Of Matter Level: High School
A nurse applies a force of 4.40 N to the piston of a syringe . The piston has an area of 5.00 x 10^-5 m^2 , what is the pressure increase in the fluid within the syringe ?
Physics Heat & Thermodynamics Level: High School
By what primary heat transfer mechanism does the Sun warm the Earth ?a) Convection
b) Conduction
c) radiation
d) induction
e) combination of all of the above
Physics Heat & Thermodynamics Level: High School
Is it possible to transfer heat from a cold reservoir to a hot reservoir ?a) No
b) Yes, this will happen naturally
c) Theoretically yes, but it has not been accomplished yet .
d) Yes; but work will have to be done .
e) Only if the total Entropy of the universe were to decrease .
Physics Heat & Thermodynamics Level: High School
The second law of thermodynamics leads us to conclude that :a) The total energy of the universe is constant .
b) disorder in the universe is increasing with the passage of time .
c) it is theoretically possible to convert heat into work with 100 percent efficiency .
d) the average temperature of the universe is increasing with the passage of time .
e) the total energy of the universe does not correlate to the critical mass .
Physics Heat & Thermodynamics Level: High School
According to the second law of thermodynamics , for any purpose that may occur within an isolated system , which one of the choices applies ?a) Entropy remains constant .
b) Entropy increases
c) Entropy decrease
d) Both a and b are possible
e) Both a and c are possible
remains constant for reversible process increase for irreversible process
Physics Heat & Thermodynamics Level: High School
When water freezes, the entropy of the water :a) increases
b) decrease
c) does not change
d) could either increase or decrease ; it depends on other factors .
e) None of the above .
Physics Heat & Thermodynamics Level: High School
If the theoretical efficiency of a Carnot engine is to be 100-percent , the heat sink must be :a) absolute zero
b) at 0 degree C
c) at 100 degree C
d) infinitely hot
e) infinitely cold
Physics Heat & Thermodynamics Level: High School
Ten joules of heat energy are transferred toa sample of ideal gas at constant volume . As a result , the internal energy of the gas :a) increase by 10 J
b) increase by less than 10 J
c) increases by more than 10 J
d) decreases by 10 J
e) Remain unchanged
Physics Heat & Thermodynamics Level: High School
Consider two cylinder of gas identical in all respects except than one contains O2 and the other He . Both hold the same volume of gas at STP and are closed by a moving piston at one end . Both gases are now compressed adiabatically to one-third their original volume . Which gas will show the greater temperature increase ?a) The O2
b) This is a no solution problem
c) Neither; both will show the same increase
d) It is impossible to tell from the information given
e) The He
Physics Heat & Thermodynamics Level: High School
A gas is quickly compressed in an isolated environment . During the event , the gas exchanged no heat with its surroundings . This process is :a) isothermal
b) isochoric
c) isobaric
d) adiabatic
e) isotropic.
Physics Heat & Thermodynamics Level: High School
An ideal gas is compressed to one-half its original volume during an isothermal process . The final pressure of the gas :a) increase to twice its original value .
b) increases to less than twice its original value .
c) increase to more than twice its original value .
d) does not change
e) increased to 4 times its original value .
Physics Heat & Thermodynamics Level: High School
An idea gas is compressed isothermally from 30 L to 20 L . During this process , 6.0 J of energy is expended by the external mechanism that compressed the gas . What is the change of internal energy for this gas ?a) 6.0 J
b) zero
c) -6.0 J
d) 36.0 J
e) none of the above
Zero
(in a isothermal process , there is no change in the internal energy )Physics Heat & Thermodynamics Level: High School
Consider two neighboring rectangular houses built from the same materials . One of the house has twice the length , width, and height of the other . Under identical climate conditions , what would be true about the rate that heat would have to be supplied to maintain the same inside temperature on a cold day ? Compared to the small house , the larger house would need heat supplies at :a) twice the rate
b) 4 times the rate
c) 8 times the rate
d) 16 times the rate
e) none of the above
Physics Heat & Thermodynamics Level: High School
Convection can occur :a) only in solids
b) only in liquids
c) only in gases
d) in solids , liquids, and gases
e) only in liquids and gases
Physics Heat & Thermodynamics Level: High School
On a cold day , a piece of metal feeds much colder to the touch than a piece of wood . This is due to the difference in which one of the following physical property ?a) density
b) specific heat
c) latent heat
d) thermal conductivity
e) specific gravity