1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ganezh [65]
3 years ago
10

Suppose you have 1 kg each of iron, glass, and water, and all three samples are at 10°C.

Physics
1 answer:
Kipish [7]3 years ago
6 0

To solve this problem it is necessary to apply the concepts related to heat exchange and Entropy.

The temperature and mass remain constant, therefore the entropy values will be the only ones to change.

Of the three elements given their entropy values are given by

\Delta S_{iron}=0.45J/gmC

\Delta S_{glass}=0.8J/gmC

\Delta S_{water}= 4.186J/gmC

Part A) From thermodynamic theory we know that temperature is inversely proportional to entropy

T = \frac{E}{\Delta S} \rightarrow Energy remains constant

\Delta t \propto \frac{1}{S}

Therefore the order would be

Lowest Temperature= Water

Medium Temperature= Glass

Highest Temperature=Iron

Part B) In the case of Energy the opposite happens because it is proportional to the entropy, then

E = T(\Delta S) \rightarrowTemperature is constant

E \propto S

Lowest Energy = Iron

Medium Energy = Glass

Highest Energy = Water

You might be interested in
Yea, gonna need some help. Thanks
natulia [17]

Answer:

t = 3.48 s

Explanation:

The time for the maximum height can be calculated by taking the derivative of height function with respect to time and making it equal to zero:

h(t) = -16t^2+v_ot+h_o\\\\\frac{dh(t)}{dt}=0=-32t+v_o\\\\v_o = 32t

where,

v₀ = initial speed = 110 ft/s

Therefore,

110 = 32t\\\\t = \frac{110}{32}\\\\

<u>t = 3.48 s</u>

8 0
3 years ago
30.42
CaHeK987 [17]

Answer: Try C

Explanation:

It's the only one that makes since.

7 0
3 years ago
Why is potassium and sodium considered as reactive metals?​
boyakko [2]

Answer:

because they are found freely in nature uncombined so they are highly reactive with other elements

3 0
3 years ago
Read 2 more answers
A horse shoe magnet is placed on a mass balance such that a uniform magnetic field of magnitude B runs between it from North to
BARSIC [14]

Answer:

(a) Measured change in mass (Δm) = BVL/Rg

(b) Total measured mass M' = M - BVL/Rg

Explanation:

Current (I) across is coil is given by the formula;

I = V/R ------------------------1

The magnetic force is given by the formula;

Fb = B*I*L -------------------2

Putting equation 1 into equation 2, we have;

Fb = B*V*L/R -------------------3

Change in mass (Δm) is given as:

Δm = Fb/g -----------------------4

Putting equation 3 into equation 4, we have;

Δm = BVL/Rg

   Therefore,  change in mass (Δm) = BVL/Rg

2. Since B runs from North to South and current running from East to West, then the magnetic force is directed upward.

Therefore,

Total measure mass M' = M - BVL/Rg

4 0
3 years ago
Marina walked 2km in half an hour, what was her average speed during her walk?
ad-work [718]

Answer:

4km/hr

Explanation:

6 0
3 years ago
Other questions:
  • In order for a reaction to begin, what is required?
    5·2 answers
  • How are balanced &amp; unbalanced forces related to net force?
    11·1 answer
  • A dog pulls on his leash with a 10-N force to the left. Identify the reaction force
    15·1 answer
  • What is the work done by a car's braking system when it slows the 1500-kg car from an initial speed of 96 km/h down to 56 km/h i
    14·2 answers
  • Which objects represents a negatively charged particle?
    9·2 answers
  • A satellite is launched to orbit the Earth at an altitude of 2.90 x10^7 m for use in the Global Positioning System (GPS). Take t
    7·1 answer
  • In calisthenics, the resistance is ultimately provided by __________. A. free weights B. springs and elastic bands C. gravity D.
    15·2 answers
  • Suggest two possible errors in finding the mass of the ruler ​
    7·1 answer
  • Is the answer 1.05m?? help me please. i just want to confrim my answer :3
    13·1 answer
  • What is the magnitude of the velocity of a 25 kg mass that is moving with a momentum of 100 kg*m/s?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!