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3 years ago

Milk being heated on top of a stove will do what?

1 answer:

8 0

The answer would be Expand because when a liquid is heated the molecules expand

Hope this helps

Have a great day/night

You might be interested in

The volume occupied by three milliliters of water is the same as three cubic centimeters of water

statuscvo [17]

The volume occupied by three milliliters of water is the same as three cubic centimeters of water is true. The conversion is as follows.

3mL (1 L/1000 mL) (1 m3/1000 L) (100 cm/1 m)^3 = 3 cm3

4 0

3 years ago

As the electron moves, does the electric potential energy of the system increase, decrease, or stay the same?

charle [14.2K]

As the electron moves, the electric potential energy of the system decreases because energy consists of kinetic and potential energy. Since energy is conserved, when there's more kinetic energy (movement) there is less potential energy.

3 0

4 years ago

Completenlo por favor

Ainat [17]

La velocidad $\mathbf v$ del objeto al tiempo $t$ es descrito por

$\mathbf v(t)=v_x(t)\,\mathbf i+v_y(t)\,\mathbf j$

donde

$\begin{cases}v_x(t)={v_x}_0+a_xt\\v_y(t)={v_y}_0+a_yt\end{cases}$

El objeto no tiene aceleración horizontal, pues $a_x=0$ y $v_x$ está determinado exactamente por su velocidad inicial en la dirección horizontal. En la dirección vertical, la gravedad es la única fuerza que actúa en el objeto, pues $a_y=-9.81\,\dfrac{\mathrm m}{\mathrm s^2}$ . Entonces, la velocidad después de $3\,\mathrm s$ satisface

${v_x}_0\,\mathbf i+\left({v_y}_0+\left(-9.81\,\dfrac{\mathrm m}{\mathrm s^2}\right)(3\,\mathrm s)\right)\,\mathbf j=20\,\mathbf i-4\,\mathbf j$

Inmediatamente, vemos que ${v_x}_0=20\,\dfrac{\mathrm m}{\mathrm s}$ y podemos encontrar que ${v_y}_0=25.43\,\dfrac{\mathrm m}{\mathrm s}$ .

Su posicíon es descrita al tiempo $t$ por

$\mathbr r(t)=r_x\,\mathbf i+r_y\,\mathbf j$

con

$\begin{cases}r_x={r_0}_x+{v_0}_xt+\dfrac12a_xt^2\\\\r_y={r_0}_y+{v_0}_yt+\dfrac12a_yt^2\end{cases}$

Si la posición inicial del objeto es el origen, suponemos que $\mathbr r(0)=\mathbf 0$ , y además tenemos

$\mathbf r(t)=\left(20\,\dfrac{\mathrm m}{\mathrm s}\right)t\,\mathbf i+\left(\left(25.43\,\dfrac{\mathrm m}{\mathrm s}\right)t+\dfrac12\left(-9.81\,\dfrac{\mathrm m}{\mathrm s^2}\right)t^2\right)\,\mathbf j$

Queremos determinar el máximo de $r_y$ . Encontramos que ${r_y}_{\mathrm{max}}\approx32.9\,\mathrm m$ cuando $t\approx2.59\,\mathrm s$ .

3 0

3 years ago

A 0.280-kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with

Jet001 [13]

Answer:

mass of second ball is 0.84 kg

Explanation:

mass of ball = 0.280 kg

to find out

mass of the second ball

solution

we know here elastic head on collision and

second ball moves = half the original speed

we consider here m1 mass of 1st ball and m2 mass of second ball

v1 = velocity of first ball before collision

v2 = velocity of second ball before collision

v3 = velocity of first ball after collision

v4 = velocity of second ball after collision

so here

we know 2nd ball was on rest so v2 = 0

after collision v4 = 1/2 ( v1)

and we know head on collision so

v3 = - v1/2

so from law of conservation of mass

m1v1 + m2v2 = m1v3 + m2v4

put here value

m1v1 + m2(0) = m1(-v1/2) + m2(v1/2)

solve and we get

m2 = 3m1

m2 = 3( 0.280) = 0.84

mass of second ball is 0.84 kg

7 0

4 years ago

3. Which planet, other than Earth, is confirmed to have water on it?

Nadusha1986 [10]

Mars.

Water exists as small amounts of ice on Mars and as water vapor. It is suspected that Mars used to have flowing water on it, but that there is none left now.

8 0

3 years ago