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Anuta_ua [19.1K]
3 years ago
12

The Sun's energy reaches the earth by _____. conduction convection radiation fusion

Physics
2 answers:
Stels [109]3 years ago
7 0
When heat or any other kind of energy move from one place
to another, conduction and convection need some material stuff
along the way, otherwise they don't happen. 

There is no material stuff between the Sun and the Earth, so
the Sun's energy reaches us by radiation.
vlabodo [156]3 years ago
5 0

The Sun's energy reaches the earth by Radiation

<h3><em>Further explanation</em></h3>

Heat is the energy transfer of an object with the environment or other objects because of the temperature difference between the two.

Heat moves from high-temperature objects to low-temperature objects

The process of heat transfer has 3 types

  • 1. Conduction, which is the transfer of energy that requires an intermediate medium and without the transfer of particles
  • 2. Convection is the transfer of energy due to the movement of the particles
  • 3. Radiation is the transfer of energy without an intermediate medium / through vacuum

Energy from sun to earth through its atmosphere is not through conduction because the atmosphere is a bad conductor. Whereas convection is not possible because the earth must be heated first. And conduction and convection cannot pass through vacuum

Heat transfer from the sun occurs because its energy is carried in the form of electromagnetic waves

<h3><em>Learn more</em></h3>

the type of heat transfer takes place when the furnace is up to an entire room

brainly.com/question/9349086

Convection is a mode of heat transfer

brainly.com/question/1564011

the sun transmits heat to Earth only by radiation

brainly.com/question/1528657

the process of convection

brainly.com/question/377220

Keywords : heat, radiation, convection, conduction, sun

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Find the force of a 600 kg car experiences accelerating from 10 km/hr to 35 km/hr in 3 seconds?​
NNADVOKAT [17]
Given,
m=600 kg
u=10 km/hr
v=35 km/hr
t= 3 sec
a=?
F=?

To find a:
u=10 km/hr=5/18*10=25/6=4.16m/s
v=35 km/hr=5/18*35=175/18=9.72m/s
t=3 sec

Now we have,
u=4.16m/s
v=9.72m/s
t=3 sec

To find acceleration:
a=(v-u)/t
a=( 9.72-4.16)/3
a=5.56/3
a=1.85m/s^2

To find F:
m=600 kg
a=1.85 m/s^2

F=ma
F=600*1.85
F=1110N

Therefore, F=1110N


3 0
4 years ago
The terminal velocity of a person falling in air depends upon the weight and the area of the person facing the fluid. Find the t
Serga [27]

Answer:

115 m/s, 414 km/hr

Explanation:

There are two forces acting on a skydiver: gravity and air resistance (drag).  At terminal velocity, the two forces are equal and opposite.

∑F = ma

D − mg = 0

D = mg

Drag force is defined as:

D = ½ ρ v² C A

where ρ is the fluid density,

v is the velocity,

C is the drag coefficient,

and A is the cross sectional surface area.

Substituting and solving for v:

½ ρ v² C A = mg

v² = 2mg / (ρCA)

v = √(2mg / (ρCA))

We're given values for m and A, and we know the value of g.  We need to look up ρ and C.

Density of air depends on pressure and temperature (which vary with elevation), but we can estimate ρ ≈ 1.21 kg/m³.

For a skydiver falling headfirst, C ≈ 0.7.

Substituting all values:

v = √(2 × 80.0 kg × 9.8 m/s² / (1.21 kg/m³ × 0.7 × 0.140 m²))

v = 115 m/s

v = 115 m/s × (1 km / 1000 m) × (3600 s / hr)

v = 414 km/hr

4 0
3 years ago
Yes ples omggggggggg
Alexxx [7]

Answer:

The answer is A.

Explanation:

They both work together to circulate oxygen and blood throughout the body.

3 0
3 years ago
Read 2 more answers
Do only number 3 and thank
IrinaK [193]

Charge = 0.2 Ah is the correct answer...

3 0
3 years ago
What happens to a current when the electric field in the wire increase
Gnom [1K]

Answer:

If the voltage is increased then the electric field is higher, and electron velocity (average) is proportional to this field. Then you have an increase in speed. And current is total charge passing per time unit, so current is proportional to velocity value of charge (and to voltage in resistors and wire).

Explanation:

5 0
4 years ago
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