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vovikov84 [41]
3 years ago
13

You warm your self besides a fire that you built on the beach...

Physics
1 answer:
chubhunter [2.5K]3 years ago
5 0

Answer:

Radiation

Explanation:

Radiation is the transfer of heat through waves. (Fire's hot air/waves warms you)

Not conduction because you have to come in direct contact with the fire in order to be considered conduction.

Not convection because those happen when heat causes a difference in densities, allowing substances to circulate.

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What is accerlation ?​
andre [41]

Explanation:

ability to gain speed over a short period of time.

the formula is:

_           v - v0               <Delta> v

a    =     _______    =   ________

                    t               <Delta> t

4 0
3 years ago
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A child blows a leaf from rest straight up in the air. The leaf has a constant upward acceleration of magnitude 1.0\,\dfrac{\tex
Novosadov [1.4K]

Answer:

Explanation:

Given

Acceleration a = 1.0m/s²

Displacement S = 1.0m

Required

Time t taken by the leaf to displace

Using the equation of motion

S = ut+1/2at²

Substitute

1.0 = 0+1/2(1)t²

1 = t²/2

Cross multiply

t² = 2

t = ±√2

t = 1.41secs

It takes the leaf to 1.41s to displace by 1m upward

6 0
4 years ago
PLEASE HELP!!!!!!! MY HOMEWORK IS DUE TODAY !!!!!!!!
bogdanovich [222]

Answer:

Distance = 25000000 miles

Time = 50 hours

Explanation:

Venus is the closest planet to Earth. It is about 25 million miles away from Earth. Its precise distance depends on where both Venus and Earth are in their respective orbits

Given that

Speed V = 500000 mph

Distance d = 25 000,000 miles

Speed = distance/ time

Time = distance/speed

Time = 25000000/500000

Time = 50 hours

It will therefore take 50 hours to get to venus at that speed.

5 0
3 years ago
50 Points please Help
Leya [2.2K]

Answer:

Temperature -SI unit :Kelvin

Explanation:

Kelvin is the SI unit of Temperature .

  • Don't get confused and write Celsius as the SI unit .Celsius is not the SI unit .

\\ \sf\longmapsto 1K=273°C

Or

\\ \sf\longmapsto 1°C=273.16K

Lets take an example :-

  • Take 27°C

Lets convert to Kelvin scale

\\ \sf\longmapsto 27°C

\\ \sf\longmapsto 27+273

\\ \sf\longmapsto 300K

  • SI unit of Mass=kilogram(Kg)
  • SI unit of Time=second(s)
  • SI unit of electric current=Ampere(A)
4 0
3 years ago
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Why is permeable soil best for plants that need a lot of drainage? Water fills this type of soil. Water dries up in this type of
Sergeu [11.5K]

Answer:

Water flows through this type of soil.

Explanation:

By definition permeable soil is soil which water and other fluid flow easily through (like sand) If a plant needs drainage the soil will need to flow through the soil easily.

5 0
3 years ago
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