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
Kay [80]
2 years ago
15

(a) Two identical open boxes originally contain the same volume of water. One is kept at 15°C and the other at 85°C for the same

length of time.
Fig. 4.1 shows the final water levels.


With reference to the energies of the water molecules, explain why the levels are different.​

Physics
1 answer:
Tresset [83]2 years ago
6 0

Explanation:

because as you can see beaker 2 has higher temperature. As volume is directly propotional

to temperature. So the the water molecules has

more energy so that's why levels are different.

You might be interested in
Use Coulomb’s law to derive the dimension for the permittivity of free space. <br><br><br><br>​
Paraphin [41]

Answer: M^-1 L^-3T^4A^2

Explanation:

From coloumb's law

K = q1q2 / (F × r^2)

Where;

q1, q2 = charges

k = constant (permittivity of free space)

r = distance

Charge (q) = current(A) × time(T) = TA

THEREFORE,

q1q2 = (TA) × (TA) = (TA)^2

Velocity = Distance(L) / time(T) = L/T

Acceleration = change in Velocity(L/T) / time (T)

Therefore, acceleration = LT^-2

Force(F) = Mass(M) × acceleration (LT^-2)

Force(F) = MLT^-2

Distance(r^2) = L^2

From ; K = q1q2 / (F × r^2)

K = (TA)^2 / (MLT^-2) (L^2)

K = T^2A^2M^-1L^-1T^2 L^-2

COLLEXTING LIKE TERMS

T^2+2 A^2 M^-1 L^-1-2

M^-1 L^-3T^4A^2

3 0
3 years ago
What force must be overcome to set an object in motion
forsale [732]
Newtons Law of motion
HOPE IT HELPS:)
8 0
4 years ago
Read 2 more answers
If two light waves are coherent a) their amplitudes are the same their phase difference is constant their frequencies are the sa
Aleonysh [2.5K]

Answer:

a) their amplitudes are the same their phase difference is constant their frequencies are the same

Explanation:

Coherent waves are the waves that have constant phase difference, equal frequency, amplitude and waveform.

Frequency denotes the number of cycles a wave completes in one second.

Amplitude is the maximum height that the wave reaches.

Waveform is the two dimensional representation of a wave in graphical form.

3 0
3 years ago
Which of the following is true about radiation from the sun?
Lelu [443]
><span>It can travel through vacuum. 

The rays must travel in the vacuum of space between Earth's atmosphere and the sun.</span>
3 0
4 years ago
A student is asked to design an experiment to determine the change in angular momentum of a disk that rotates about its center a
Andreas93 [3]

Answer:

<em>A. The magnitude of the net force exerted on the disk </em>

<em>B. The distance between the center of the disk and where the net force is applied to the disk</em>

<em></em>

Explanation:

To determine the change in angular momentum of the disk after a stipulated time, one must measure the above options.

<em>The radius of the disk is fixed and does not vary with the experiment, and the mass of the disk is also constant and known.</em>

<em>One must first measure the magnitude of the net force exerted on the disk</em>, and determine the torque as a result of this torque from the distance between the center of the disk and the point where the net force is applied.  The above statement also points out <em>the necessity of measuring the distance between the center of the disk and the point where the net force is applied on the disk, as both the torque, and the moment of inertia is calculated from this point</em>.

torque T = Force time distance of point of action of force from mid point of the disk

T = F X r

T x t = Δ(Iω)

Where t is the time,

and Δ(Iω) is change in angular momentum.

7 0
3 years ago
Other questions:
  • A seagull flies at a velocity of 9.00 m/s straight into the wind. (a) if it takes the bird 20.0 min to travel 6.00 km relative t
    5·1 answer
  • A humanoid skeleton is found buried in the ashes of a volcano that erupted between 10,000 and 12,000 years ago. when scientists
    6·2 answers
  • Why would a landslide be more likely on a steep mountain than on a gently sloping hill?
    11·2 answers
  • The paper dielectric in a paper-and-foil capacitor is 0.0800 mm thick. Its dielectric constant is 2.50, and its dielectric stren
    14·1 answer
  • 33 POINTS How can I get the temperature? SOUND SPEED 340 m/s = 331 m/s + (0,6xTemperature)
    14·1 answer
  • Which unit is used to measure resistance?<br><br> a. volts<br> b. charges<br> c. amperes<br> d. ohms
    13·2 answers
  • How does the electric generator in a wind turbine convert kinetic energy into electrical energy?
    12·1 answer
  • Astronomy can best be described as a/an
    14·1 answer
  • True or false. Atoms of a given element will have the same mass.
    9·1 answer
  • ___- is defined in science as the abilty to move matter or change matter in some other way
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!