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2 years ago

HEY PLEASE HELP AM DESPERATE!!!!!!

Physics

2 answers:

MariettaO [177]2 years ago

4 0

Answer:

Runner A

Explanation:

Both B and C finished the race from 25 seconds

But A runner finished it from 20 seconds

MAVERICK [17]2 years ago

3 0

Answer:

runner A is win

Explanation:

because he take smallest time

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What is transferred by all types of waves? A. energy B. electrons C. heat D. matter

djyliett [7]

The question is what do all types of waves transfer. Waves, both mechanical and electromagnetic are disturbances that transfer energy without transporting matter. It doesnt matter wether they are propagating trough a medium or trough vacuum. Therefore the correct answer is A. energy.

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2 years ago

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Relation of Kilometre and mile

Alja [10]

Answer:

1km = o.621371 mile

Explanation:

1.609 kilometers equal 1 mile. The kilometer is a unit of measurement, as is the mille. However, a mile is longer than a kilometer.

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Hi pls answer 11 point pls

Lelechka [254]

Answer:

the answer is a. a ball is moving towards the camera faster then slower

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2 years ago

Some element can be either solid or liquid. At the melting point, the liquid has 8 × 10-22 J more enthalpy per atom than the sol

OlgaM077 [116]

Answer:

481.76 J/mol

133.33 K

Explanation:

$N_A$ = Avogadro's number = $6.022\times 10^{23}$

Change in enthalpy is given by

$\Delta H=8\times 10^{-22}\times 6.022\times 10^{23}\\\Rightarrow \Delta H=481.76\ J/mol$

Entropy is given by

$\Delta S=6\times 10^{-24}\times 6.022\times 10^{23}\\\Rightarrow \Delta S=3.6132\ J/mol K$

Latent heat of fusion is given by

$L_f=\Delta H\\\Rightarrow L_f=481.76\ J/mol$

The latent heat of fusion is 481.76 J/mol

Melting point is given by

$T_m=\dfrac{L_f}{\Delta S}\\\Rightarrow T_m=\dfrac{8\times 10^{-22}\times 6.022\times 10^{23}}{6\times 10^{-24}\times 6.022\times 10^{23}}\\\Rightarrow T_f=133.33\ K$

Melting occurs at 133.33 K

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2 years ago

The method of heat transfer by which the sun energy reaches the earth is

aniked [119]

Answer:

C. Radiation

Explanation:

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3 years ago