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
bonufazy [111]
3 years ago
5

Your bedroom gets direct sunlight through a window during the hottest part of the day. You ask your mom to turn down the thermom

stat in the house so your room can cool down. Instead, your mom suggests that you put aluminum foil over the windows. What will the results be if you take your mom's advice?
A. A room cooled by minimizing heat transfer by reflection.
B. A room cooled by minimizing heat transfer by radiation.
C. A room cooled by minimizing heat transfer by convection.
D. A room cooled by minimizing heat transfer by conduction.
Please help me! It would be greatly appreciated!!
Thank you so much!!
Physics
1 answer:
ycow [4]3 years ago
6 0
I want to say its cooled by reflection because of the foil, sun reflects off of the foil back into the atmosphere. I don't think it's conduction because I have the foil on my windows and it's never warm to the touch. it's not a liquid so I don't believe it's convection. The foil reflects the radiation so I don't think it's b, c or d. so I wanna say A but I'm not 100% sure
You might be interested in
A published hypothesis:
kow [346]

Answer:

should be tested by the scientific community

4 0
3 years ago
Represent 7468 N with SI units having an appropriate prefix. Express your answer to four significant figures and include the app
Musya8 [376]

Answer:

7.468 kN

Explanation:

Here the force is given in Newton

Some of the prefixes of the SI units are

kilo = 10³

Mega = 10⁶

Giga = 10⁹

Tera = 10¹²

The number is 7468.0

Here, the only solution where the number of significant figures is kilo. If any other prefix is chosen then the significant figures will increase.

1 kilonewton = 1000 Newton

1\ Newton=\frac{1}{1000}\ kilonewton

\\\Rightarrow 7468\ Newton=\frac{7468}{1000}\ kilonewton\\ =7.468\ kilonewton

So, 7468 N = 7.468 kN

7 0
3 years ago
How do mechanical waves compare with electromagnetic waves?
Naddika [18.5K]

Answer:

Main Difference Between Mechanical and Electromagnetic waves

A wave is composed of some kind of disturbance that propagates. We can classify waves into many different types based on their properties. One of the properties of the waves depends on whether they need a medium to propagate or not. The primary difference between electromagnetic and mechanical waves is also based on this property. Mechanical waves need a medium, while electromagnetic waves do not need a medium to propagate. Electromagnetic waves can travel through a vacuum. The other differences between mechanical and electromagnetic waves are given below:

Electromagnetic waves can travel through a vacuum, that is an empty space, whereas mechanical waves cannot. They need a medium to travel such as water or air. Ripples in a pond are an example of mechanical waves whereas electromagnetic waves include light and radio signals, which can travel through the vacuum of space.

Mechanical waves can be classed as elastic waves because their transmission depends on the medium's (water, air etc.) elastic properties.

Electromagnetic waves are caused because of the varying magnetic and electric fields. They are produced by the vibration of the charged particles.

Because of these differences, the speed of each type of wave varies significantly. Electromagnetic waves travel at the speed of light but mechanical waves are far slower.

                                                                            Have a wonderful day!

                                                                                                ~Lillith of brainly~

6 0
2 years ago
Why do the graphs differ?​
melisa1 [442]

Well first graph represents rectangular hyperbola

vu = c^2 ( c is constant)

AS 1/v + 1/u = 1/f

Take1/ f to be constant c

1/v = c - 1/u

it is of the form y = - x + k

Slope = -1 having intercept k as shown in fig 2

3 0
3 years ago
What is the definition of matter
xeze [42]
The definition of matter is physical substance in general, as distinct from mind and spirit that which occupies space and possesses rest mass, especially as distinct from energy, which basically means that matter makes up the whole Earth and everything on it. <span />
8 0
3 years ago
Read 2 more answers
Other questions:
  • If you hold your arm outstretched with palm upward, the force to keep your arm from falling comes from your deltoid muscle. assu
    14·1 answer
  • Sometimes when you are training for event you may notice a decrease in improvement in level out of performance true or false
    11·2 answers
  • Friends who are your age and share the same interests are called
    9·2 answers
  • An electric current is flowing through a copper wire. Which type of force can be produced by the flow of the current?
    6·2 answers
  • A straight wire segment 5 m long makes an angle of 30° with a uniform magnetic field of 0.37 T. Find the magnitude of the force
    12·1 answer
  • Statement that can be proven by observation or measurement is known as a(n):
    7·1 answer
  • Given the resistivities below, which material is best described as an insulator?
    12·1 answer
  • PLEASE HELP WILL MARK BRAINLIEST
    12·1 answer
  • Tammy leaves the office, drives 26 km due
    11·1 answer
  • Which planet do most known extrasolar planets most resemble?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!