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
Arte-miy333 [17]
3 years ago
8

A 400 gram sample of alcohol at 10o C [Ca=2.64 J/g*oC] is mixed with 400 grams of warm water [Cw=4.186 J/g*Co] at 88o C. Assume

no heat is lost to the surroundings, what is the final temperature of the mixture when thermal equilibrium is reached?
Alcohol = -[Warm Water]
mCaΔT = -[mCwΔT]
can u help pls?
Physics
1 answer:
alukav5142 [94]3 years ago
8 0
The heat lost by the water will be equivalent to the energy gained by the alcohol. Thus:
maCaΔT = -mwCwΔT
400 x 2.64 x (T - 10) = 400 x 4.186 x (88 - T)
T = 57.8 °C
You might be interested in
How far is tau hercules in light years from earth?
Nady [450]
Hipparcos estimated its distance at roughly 96 parsecs from Earth, or 310 ± 20 light years away.
8 0
3 years ago
When the temperature of ice-cold water is increased slightly, does it undergo a net expansion or net contraction?
miss Akunina [59]

From the freezing temperature up to about 4°C (39°F) the water CONTRACTS.  That is, it becomes MORE dense.  I think I read that water is the ONLY known substance whose solid phase floats in its liquid phase.  That's why the cubes float in your soda and bergs float in the ocean.  And if weren't so, then life on Earth would not be possible !  Oceans and lakes would freeze from the bottom up, ONE TIME, and then never thaw again.

4 0
2 years ago
How is a net electric charge produced​
Vlad [161]

If an object has more protons than electrons, then the net charge on the object is positive. If there are more electrons than protons, then the net charge on the object is negative. If there are equal numbers of protons and electrons, then the object is electrically neutral.

Source: https://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/electric-charge-ap/a/electric-charge-ap1

Hope this helps :)

4 0
3 years ago
Match the property of a sound wave to the correct definition. A. amplitude . B. frequency  . C. period . D. pitch  E. loudness 
Maru [420]

Amplitude: How dense the medium is in the compression part of the wave, and how empty the rarefied area is.

Frequency: The number of wavelengths that pass a position in 1 second.

loudness: The quality of the sound that is most closely linked to the amplitude of the sound wave.

Period: The amount of time that it takes one wavelength to pass by a position.

Pitch: The quality of the sound that is most closely linked to the frequency of the sound wave.

5 0
3 years ago
Read 2 more answers
5. The wire in consists of two segments of different diameters but made from the same metal. The current in segment 1 is I1. a.
Volgvan

Answer:

hello your question is incomplete attached below is the complete question

answer :

a) I1 = I2

b) J1 > J2

c) E 1 > E2

d) ( vd1 ) > ( vd2 )

Explanation:

a) The currents in the two segments are the same  i.e. I1 = I2  and this is because the segments are connected in series

b) Comparing the current densities J1 and J2 in the two segments

note : current density ∝ 1 / area

The area of the second segment is > the area of first segment  therefore

J1 > J2

J1 ( current density of first segment )

J2 ( current density of second segment )

c) Comparing the electric field strengths E1 and E2

 note : electric field strength ∝ current density

since current density of first segment is > current density of second segment  and conductivity of the materials are the same hence

E 1 > E2

d) Comparing the drift speeds Vd1 and Vd2

( vd1 ) > ( vd2 )

this because  ; vd ∝ current density

7 0
3 years ago
Other questions:
  • The half life of radium 222 is 38 seconds if you had a 12 gram sample how much would be left after 72 seconds
    9·1 answer
  • Identify solar, wind, nuclear, and tidal power as nonrenewable or renewable energy
    15·1 answer
  • What is the name given to the force exerted by the first object on a second object
    12·1 answer
  • A tightly wound 1000-turn toroid has an inner radius 1.00 cm and an outer radius 2.00 cm, and carries a current of 1.50 A. The t
    14·1 answer
  • If the steam in the engine is able to raise a 30 kg piston to a height of 0.68 m, how much work has been done by the steam?
    11·1 answer
  • Suppose that the current in the solenoid is i(t. within the solenoid, but far from its ends, what is the magnetic field b(t due
    10·2 answers
  • ??????????????????????????????
    13·1 answer
  • A slab of glass 8.0 cm thick is placed upon a printed page. If the refractive index of the glass is 1.5, how far from the surfac
    7·1 answer
  • What can cause the formation of a magnetic domain?
    12·2 answers
  • Lunar phases occur when the moon appears to change shape as seen from earth. What causes different phases of the moon?.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!