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
Scilla [17]
3 years ago
13

When two substances are mixed together, a color change is observed. Does this mean that a chemical reaction has definitely occur

red?
Physics
1 answer:
Elanso [62]3 years ago
7 0
Nope, color change can also occur during a physical change. 
You might be interested in
What question was asked by Faraday that the narrator calls a leap
masha68 [24]
<span> If electricity and magnetism can create motion, can the reverse be true? Can motion and magnetism create electricity?</span>
4 0
3 years ago
Read 2 more answers
What is the S.I. unit of drift velocity and electron mobility?
DanielleElmas [232]
Drift velocity is equal to displacement of the moving object per unit time. The SI unit for displacement is meters while that of time is second. Hence the derived SI unit of velocity is meter per second. This also applies to electron mobility which relates to the displacement per unit time of a moving electron 
7 0
3 years ago
When attempting to determine the coefficient of kinetic friction, why is it necessary to move the block with constant velocity
Readme [11.4K]

Answer:

Explanation:

In order to measure the coefficient of friction , we apply external force to move the body . When external force comes in motion , we adjust the external force so that it moves with zero acceleration or uniform velocity . In this case external force becomes equal to kinetic frictional force and then net force becomes zero because

net force = mass x acceleration = m x 0 = 0

Now frictional force = μ mg where μ is coefficient of kinetic friction

so F = μ mg where F is external force applied

μ = F / mg

Hence , to make external force equal to frictional force , it is necessary to make acceleration of body zero .

4 0
2 years ago
Plz do it all i will give brainlest and thanks to best answer.
maxonik [38]
Its a, metal is a good conductor of heat so yea
Hope this helps :)
4 0
2 years ago
Read 2 more answers
Sound travels at about 360 meters/sec. What is the wavelength of sound with a
ollegr [7]

<u>Answer:</u>

0.24 m

<u>Explanation:</u>

Given:

Wave velocity ( v ) = 360 m / sec

Frequency ( f ) = 1500 Hz

We have to calculate wavelength ( λ ):

We know:

v = λ / t [ f = 1 / t ]

v = λ f

= > λ = v / f

Putting values here we get:

= > λ = 360 / 1500 m

= > λ = 36 / 150 m

= > λ = 0.24 m

Hence, wavelength of sound is 0.24 m.

6 0
3 years ago
Other questions:
  • List the three products of radioactive decay from the most penetrating to the least penetrating
    6·1 answer
  • Which theory was first proposed by Albert Einstein
    10·2 answers
  • Which three of these statements about current and voltage in a series circuit are true ?
    7·1 answer
  • A woman stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.79
    10·1 answer
  • An Earth satellite is in a circular orbit at an altitude of 500 km.
    11·1 answer
  • How long does it take the lava bomb to reach its maximum height? Answer with three significant digits and the correct unit. A sm
    13·1 answer
  • Hhhjhjhjkhhhjhjhkjkhhjh
    13·1 answer
  • A boy pulls with a 92.5 N force on the handle of a 27.5 kg wagon while the handle makes an angle of 35.0 degrees with the horizo
    11·1 answer
  • A power plant burns coal to generate electricity. Suppose that 1000 J of heat (Q) from the coal fire enters a boiler, which is k
    7·1 answer
  • Didifference between uniform and variable velocity <br>​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!