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3 years ago

In the process of melting, what best describes what happens to a solid?

Physics

2 answers:

lions [1.4K]3 years ago

6 0

The correct answer is A.

In the process of melting, a solid will gain kinetic energy and become a liquid.

Hope this helps,

Davinia.

Eduardwww [97]3 years ago

5 0

<span>a. A solid will gain kinetic energy and become a liquid.</span>

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Help it’s actually physical science but plz help

Butoxors [25]

The correct answer is B

3 0

3 years ago

Consider an insulated tank with a volume V = 2 L is separated into two equal-volume parts by a thin wall. On the left is an idea

steposvetlana [31]

Answer

given,

V = 2 L

the left is an ideal gas at P = 100 k Pa and T = 500 K

mass is constant

$m_1 = m_2$

$\dfrac{P_1V_1}{RT_1} = \dfrac{P_2V_2}{RT_2}$

Pressure is same because it's not changing due to process

$\dfrac{V}{500} = \dfrac{2 V}{T_2}$

$T_2 = 1000\ K$

$\Delta S_{univ} = \Delta S_{sys} + (\Delta S)_{surr}$

$\Delta S_{univ} =m(C_v ln (\dfrac{T_2}{T_1}))+ R ln (\dfrac{V_2}{V_1})$

$m = \dfrac{P_1V_1}{RT_1}$

$m = \dfrac{100 \times 10^3 \times 2 \times 10^{-3}}{287\times 500}$

m = 1.39 x 10⁻³ Kg

$\Delta S_{univ} =1.39\times 10^{-3}(0.718 ln\ 2+ 0.287 ln (2)$

$\Delta S_{univ} =0.968\times 10^{-3}\ kJ/K$

5 0

3 years ago

A bus starts to move from rest. If its velocity becomes 90 km/hr after 8 seconds, calculate its acceleration.

a_sh-v [17]

Answer:

The acceleration is 11.25 km/hr

Explanation:

Divide the velocity over time to find the acceleration. The bus is accelerating 11.25 km/hr per second in the range of 8 seconds

7 0

3 years ago

Which action might lead scientists to develop new explanations about the

VikaD [51]

Answer:

vrzjxuxuxjcckhcouvou

Explanation:

gghhjjokjjhghhrjxjxkyxygbjv

5 0

3 years ago

Imagine a system where a block rests on an inclined plane. The block is then given an initial push so that it starts sliding dow

katen-ka-za [31]

Answer:

the correct affirmation is the 3

Explanation:

Let's analyze the problem with Newton's second law before looking at the claims.

X axis parallel to the plane, positive down

F -fr + Wₓ = ma

Y Axis perpendicular to the plane

N -Wy = 0

With trigonometry

Wₓ = W sin θ

Wy = w cos θ

Let's multiply by the displacement along the plane, to relate to the work, which has as expression W = F d

F d -fr d + Wx d = ma d

Push W₁ = Fd

frictional force W₂ = -fr d

gravity W₃ = Wx d

W₁ + W₃ -W₂ = m a d

Analysis affirmations:

R1) false. The work of gravity is the subtraction

R2) false. Each force contributes according to its magnitude

R3) true. In the equation we see that, if the acceleration is zero, W2 = W1 + W3

R4) False. It equals the difference

the correct affirmation is the 3

6 0

3 years ago