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
finlep [7]
3 years ago
7

Hi:) anyone able to help with part - aii the one on cooling fins ? Thankss!

Physics
1 answer:
taurus [48]3 years ago
5 0

The cooling find are there to keep the temperature low. They are mostly black in color, and hence, radiate heat, which is how the temperature is controlled.

You might be interested in
What is surface tension? How does surface tension result from intermolecular forces? How is it related to the strength of interm
Bond [772]

Answer:

Surface tension is the tendency of liquid surfaces to shrink into the minimum surface area possible.

Surface tension is caused by effects of intermolecular forces at liquid interface.

Surface tension increases as intermolecular forces increases.

Explanation:

  • Surface tension is the tendency of liquid surfaces to shrink into the minimum surface area possible. It can also be seen as the energy required to increase the surface of a liquid by a unit amount.
  • Surface tension is caused by the mediating effects of intermolecular forces at the liquid interfaces. Example in water, surface tension is caused by the mediating effect of the force between hydrogen and oxygen molecules. Liquids tends to reduce their surface area because of inward attarction of the liquid molecules.
  • Surface tension increases as intermolecular forces increases. Also, surface tension decreases as intermolecular forces decreases.

3 0
3 years ago
A storm is moving in quickly. The weather station reported that it is traveling west at 40 miles per hour. This information desc
Masteriza [31]
This information describes the storm's velocity.
8 0
3 years ago
In the table below,which statement would best fill the missing box under isolated systems?
Nostrana [21]

Answer:

b-energy is not exchanged

Explanation:

An isolated system is a thermodynamic system in which neither energy nor matter is exchanged with the surroundings.

As such the best statement that will fill the box under an isolated system is that energy is not exchanged.

  • In an open system, both matter and energy are exchanged with the surrounding.
  • A closed system is one in which energy transfer is permissible but matter is not exchanged.
  • Energy cannot be created nor destroyed in any system. They are simply transformed.
3 0
3 years ago
A drag racer starts from rest and accelerates at 10 m/s squared for the
nika2105 [10]

Answer:

54 \frac{m}{s}

Explanation:

v=u+at

where u=initial velocity

v=0+(10\frac{m}{s^{2} } )×(5.4s)

v=54\frac{m}{s}

6 0
3 years ago
An electric drill operating at 120 volts draws a current of 3 Amperes. What is the total amount of electrical energy used by the
Liono4ka [1.6K]
<h3><u>Answer;</u></h3>

= 21600 Joules or 21.6 Kilo joules

<h3><u>Explanation;</u></h3>

Electrical energy is given by the formula  = VIt ;

where V is the voltage in volts, I is the current in Amperes, and t is time in seconds.

Voltage = 120 volts

Current = 3 amperes

Time = 60 seconds or 1 minute

Therefore;

Electrical energy = 120 × 3 × 60

                            <u> = 21600 Joules or 21.6 Kilo joules</u>

4 0
3 years ago
Other questions:
  • Choose the most acidic substance in the group.
    8·2 answers
  • The ________ on the axis (c2) forms a pivot point with the atlas (c1) that allows you to nod a "no."
    15·1 answer
  • What is the function of the muscles around the lens in the human eye
    10·1 answer
  • A series circuit contains four light bulbs. The switch is opened and one of the bulbs is removed, but not replaced. Then the swi
    11·1 answer
  • What is one exsample of a closed economy​
    5·2 answers
  • A thin disk of mass 2.2 kg and radius 61.2 cm is suspended by a horizonal axis perpendicular to the disk through its rim. The di
    15·1 answer
  • A 10 kg package is delivered to your house.
    12·1 answer
  • Calculate the height of a cliff if it takes 2.35s for a rock to hit the ground when it is thrown straight up from the cliff with
    10·1 answer
  • What feelings do learned helplessness and depression have in common?
    14·1 answer
  • What kind of energy do most electric inventions give off?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!