12.7 cm =____________

The change of phase from a solid to a gas is called _____. evaporation melting sublimation vaporization

ziro4ka [17]

Solid to gas stage changes are known as "sublimation." In many cases, solids transform into gases simply after an intermediate liquid state. It is an endothermic procedure (happens with the absorption of heat from the environment).

Some example:

Freeze drying - Water can be sublimated in sustenance items by utilizing a vacuum.

"Dry ice" or, in other words carbon dioxide and as the name proposes it experiences stage change from solid state to liquid state straightforwardly without wetting or going into liquid state.

4 0

3 years ago

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A/An __________ is a small, raised red lesion that is less than 0.5 cm in diameter and does not contain pus.

CaHeK987 [17]

Answer:

See Explanation

Explanation:

Papule is a small, raised red lesion that is less than 0.5 cm in diameter and does not contain pus. Small pimples are examples

6 0

2 years ago

A glider of mass 0.240 kg is on a frictionless, horizontal track, attached to a horizontal spring of force constant 6.00 N/m. In

Sveta_85 [38]

Answer:

$E_M=0.0492J$ .

Explanation:

The mechanical energy of the system will be the kinetic energy plus the elastic potential energy: $E_M=K+U_e$ .

We know that the equation for the kinetic energy is $K=\frac{mv^2}{2}$ , where m is the mass of the object and v its velocity.

We know that the equation for the elastic potential energy is $U_e=\frac{k\Delta x^2}{2}$ , where k is the spring constant and $\Delta x$ the compression (or elongation) respect to equilibrium.

So for our values we have:

$E_M=K+U_e=\frac{mv^2}{2}+\frac{k \Delta x^2}{2}=\frac{(0.24kg)(0.4m/s)^2}{2}+\frac{(6N/m)(0.1m)^2}{2}=0.0492J$ .

6 0

2 years ago

Two cellists, one seated directly behind the other in an orchestra, play the same note for the conductor who is directly in fron

sergij07 [2.7K]

Answer:

Please see below as the answer is self-explanatory.

Explanation:

In order to have a destructive interference, the path difference between the sources of the sound, must be equal to an odd multiple of the semi-wavelength, as follows:

⇒ d = d₂ - d₁ = n*(λ/2)

The minimum posible value for this distance, is when n=1, as it can be seen here:

dmin = λ/2

In any traveling wave, there exists a fixed relationship between the wave speed, the frequency and the wavelength:

v = λ*f

Therefore, assuming that the speed of sound keeps constant, if the frequency is increased, in order to keep the right side of the expression above balanced, λ must be decreased.
As the smallest separation that produces destructive interference is directly proportional to the wavelength, this means that this separation will decrease if the cellists produced a note with a higher frequency.

7 0

2 years ago

Which factors affect the gravitational force between objects? Check all that apply.

Nadusha1986 [10]

Answer:

difference between objects, volumes of objects, masses of objects

Explanation:

i think thats it

8 0

2 years ago

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12.7 cm =_____________mm ​

12.7 cm =_____________mm