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
marysya [2.9K]
3 years ago
7

The air in living room has a mass of 72 kg and a specific heat of 1010 J/(kg°C). What is the approximate change in thermal energ

y of the air when it warms from 15°C to 20°C?
Physics
1 answer:
ICE Princess25 [194]3 years ago
3 0

Answer:

d

Explanation:

You might be interested in
How does the speed of radio waves compare with the speed of infrared waves?
Paul [167]
They both are waves but one goes faster then the other.
3 0
3 years ago
2. An object with moment of inertia ????1 = 9.7 x 10−4 kg ∙ m2 rotates at a speed of 3.0 rev/s. A 20 g mass with moment of inert
svetoff [14.1K]

Answer:

2.85 rad/s

Explanation:

5 cm = 0.05 m

20 g = 0.02 kg

When dropping the 2nd object at a distance of 0.05 m from the center of mass, its corrected moments of inertia is:

I_2 = 1.32\times10^{−6} + 0.02 * 0.05^2 = 0.513\times10^{-4} kgm^2

So the total moment of inertia of the system of 2 objects after the drop is:

I = I_1 + I_2 = 9.7\times10^{-4} + 0.513\times10^{-4} = 0.0010213 kgm^2

From here we can apply the law of angular momentum conservation to calculate the post angular speed

\omega_1 I_1 = \omega_2 I

\omega_2 = \omega_1 \frac{I_1}{I} = 3 \frac{9.7\times10^{-4}}{0.0010213} = 2.85 rad/s

6 0
3 years ago
Write<br>any<br>to increase<br>magnitude of current in dynamo​
Svetach [21]

Answer:

Explanation:

It can be increased by: increasing the rate of rotation. Increasing the strength of the magnetic field. Increasing the number of turns on the coil.

Hope this helps

plz mark it as brainliest!!!!!!

4 0
3 years ago
What is this?<br> Picture
miss Akunina [59]

Answer:

may be upside down alphabet :"T"

Explanation:

8 0
3 years ago
Read 2 more answers
You leave your bicycle out in the rain and it rust is a physical or chemical change
Alexxx [7]
It’s a chemical change
3 0
3 years ago
Read 2 more answers
Other questions:
  • 12. The resistivity of a given wire of cross-sectional
    11·1 answer
  • A force that causes an object to change its motion is called?
    8·1 answer
  • A cannonball is fired across a flat field at an angle of 43 degrees with an initial speed 32 m/s and height of 12 m.
    6·1 answer
  • How does water deposit sediment
    13·1 answer
  • 3. A ray of light incident on one face of an equilateral glass prism is refracted in such a way that it emerges from the opposit
    9·1 answer
  • Define Simple harmonic motion (SHM). A body moving with SHM has an amplitude of 10 cm and a frequency of 100 Hz. Find (a) the pe
    10·1 answer
  • A box of unknown weight is 1 m away from the fulcrum. To balance the sides, a student applies a force of 4 N at a distance of 3
    6·1 answer
  • Write the examples of unit​
    11·1 answer
  • Q5:
    6·1 answer
  • a 1500 kg vehicle is traveling on a curved, icy road. the road is banked at an angle of 10.0 degrees and has a radius of curvatu
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!