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
Sav [38]
2 years ago
14

Explain how the thermal energy of an isolated system changes with time if the mechanical energy of that system is constant.​

Physics
1 answer:
Naddika [18.5K]2 years ago
6 0

Answer:

Thermal energy of an isolated system changes with time If the mechanical energy of that system is constant according to the first law of thermodynamics, which states that thermal energy of an isolated system can still change as long as the total energy of that system does not change.

Explanation:

You might be interested in
I NEED THE ANSWER TO THIS SO I CAN GET MY PHONE BACK
Setler [38]
The answer is C I not sure
4 0
2 years ago
What forms of technology are scientists using to study El Niño? need help fast!?!?!?!?
Natali5045456 [20]
Noaa. The buoys transmit some of the data on a daily basis to NOAA through a satellite in space.
6 0
3 years ago
Read 2 more answers
A certain fm radio station broadcasts electromagnetic waves at a frequency of 125000 hertz. these radio waves travel at a speed
faltersainse [42]
Speed = frequency x wavelength
300,000,000 = 125000 x wavelength
wavelength = 125000/300,000,000 =4.16667x10^-4 meters
or 4.1667E-4 meters
4 0
3 years ago
A wire is made from a material having a temperature coefficient of resistivity of 0.0003125 (°C^-1). In an experiment, we mainta
beks73 [17]

Answer:

The power decreases by 36%

Explanation:

Given:

At 20° C

Power, P₀ = 300 W

Potential difference, V = 150 volts

Now, power is given as

P = V²/R

where, R is the resistance

on substituting the values, we get

300 = 150²/R₀

or

R₀ = 75 Ω

Now, the variation of resistance with temperature is given as

R = R₀[1 + α(T - T₀)]

where, α is the temperature coefficient of resistivity = 0.0003125 (°C⁻¹)

now, at

T₀ = 20° C

R₀ = 75 Ω

for

T = 1820° C

we have

R = R₀[1 + α(T - T₀)]

substituting the values

we get

R = 75×[1 + 0.0003125 × (1820 - 20)]

or

R = 117.18 Ω

Now using the formula for power

We have,

P = V²/R

or

P = 150²/117.18 = 192 W

Therefore, the percentage change will be

= \frac{P-P_0}{P_0}\times 100

on substituting the values , we get

= \frac{192-300}{300}\times 100

= -36%

here, negative sign depicts the decrease in power

3 0
2 years ago
Read 2 more answers
Since acids are so corrosive they are not found anywhere in the human body true/false
pantera1 [17]

the answer is in fact True

5 0
3 years ago
Read 2 more answers
Other questions:
  • 4. Both trains speed up all the time.
    14·1 answer
  • What are the three fields E⃗ 1E→1, E⃗ 2E→2, and E⃗ 3E→3 created by the three charges? Write your answer for each as a vector in
    8·1 answer
  • An airplane flies in a loop (a circular path in a vertical plane) of radius 200 m . The pilot's head always points toward the ce
    5·1 answer
  • A lightbulb has a resistance of 285 ω when operating with a potential difference of 110 v across it. what is the current in the
    5·1 answer
  • What is a watt a unit of?<br> power<br><br> distance<br><br> time<br><br> light
    6·2 answers
  • The table below shows the speed of sound waves from musical sound sources at 20°C. Which conclusion can be made based on the inf
    15·2 answers
  • What formula can I use to solve speed and temperature in soundwave​
    8·1 answer
  • The graph shows the amplitude of a passing wave over time in seconds (s) What is the approximate frequency of the wave shown? A.
    15·1 answer
  • Eva Baul throws a ball upward at 23.4 m/s
    10·1 answer
  • How does light behaves when light passes through water?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!