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leva [86]
3 years ago
12

When a solid turns to a gas, does it have to go through the liquid state first

Physics
2 answers:
Mariulka [41]3 years ago
8 0

Answer:

Yes

Explanation:

At a given temperature, most chemical compounds and elements can possess one of the three different states of matter at different pressures. In these cases, the transition from the solid to the gaseous state requires an intermediate liquid state.

DerKrebs [107]3 years ago
7 0

Answer:

Sublimation

Explanation: When a solid goes straight to a gas it's called sublimation.

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Answer:

v = 1.28 m/s

Explanation:

Given that,

Maximum compression of the spring, \Delta x=0.03\ m

Spring constant, k = 800 N/m

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To find,

The velocity of the block when it first reaches a height of 0.1 m above the ground on the ramp.

Solution,

When the block is bounced back up the ramp, the total energy of the system remains conserved. Let v is the velocity of the block such that,

Initial energy = Final energy

\dfrac{1}{2}kx^2=mgh+\dfrac{1}{2}mv^2

Substituting all the values in above equation,

\dfrac{1}{2}\times 800\times 0.03^2=0.2\times 9.8\times 0.1+\dfrac{1}{2}\times 0.2\times v^2

v = 1.28 m/s

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2 years ago
What are the characteristics of high energy wave?
Ivahew [28]

Answer:

D. High frequency and short wavelengths.

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A bus travelling 30.0 km/h east has a constant increase in speed of 1.5 m/s. What is its velocity 6.8s later
alekssr [168]

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8.72 seconds before

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3 years ago
A helium atom (mass 4.0 u) moving at 598 m/s to the right collides with an oxygen molecule (mass 32 u) moving in the same direct
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Answer:

Speed of the helium after collision = 246 m/s

Explanation:

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v₂ =445 m/s

Given that initially both are moving in the same direction and lets take they are moving in the right direction.

Speed of the helium after collision = v₁

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Initial linear momentum = Final linear momentum

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Speed of the helium after collision = 246 m/s

6 0
3 years ago
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