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3 years ago

Why can't heat be transferred between two objects that have the same temperature

1 answer:

3 0

Answer: Because temperature is a measure of the average kinetic energy of the atoms or molecules in the system. The zeroth law of thermodynamics says that no heat is transferred between two objects in thermal equilibrium; therefore, they are the same temperature.

Explanation:9 (- _ -)

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7. Una locomotora de 80.000 kilogramos de masa, parte del reposo y a los 10 segundos lleva una velocidad de 36Km/h. Halla: A. La

Tasya [4]

Answer:

a) La aceleración del movimiento es 1 metros por segundo al cuadrado, b) La fuerza que causa el movimiento es 80.000 newtons.

Explanation:

a) Supóngase que la locomotora acelera uniformemente, la aceleración se está descrita por la siguiente ecuación cinemática:

$v = v_{o}+a\cdot t$

Donde:

$v_{o}$ - Rapidez inicial, medida en metros por segundo.

$v$ - Rapidez final, medida en metros por segundo.

$a$ - Aceleración, medida en metros por segundo al cuadrado.

$t$ - Tiempo, medido en segundos.

Se despeja la aceleración:

$a = \frac{v-v_{o}}{t}$

Si $v_{o} = 0\,\frac{m}{s}$ , $v = 10\,\frac{m}{s}$ y $t = 10\,s$ , la aceleración del movimiento es:

$a = \frac{10\,\frac{m}{s}-0\,\frac{m}{s}}{10\,s}$

$a = 1\,\frac{m}{s^{2}}$

La aceleración del movimiento es 1 metros por segundo al cuadrado.

b) Dado que una locomotora es un sistema de masa constante, la fuerza ( $F$ ) que genera el movimiento es igual a:

$F = m\cdot a$

Donde:

$m$ - Masa, medida en kilogramos.

$a$ - Aceleración, medida en metros por segundo al cuadrado.

Dados que $m = 80.000\,kg$ y $a = 1\,\frac{m}{s^{2}}$ , la fuerza que causa el movimiento es:

$F = (80.000\,kg)\cdot \left(1\,\frac{m}{s^{2}} \right)$

$F = 80.000\,N$

La fuerza que causa el movimiento es 80.000 newtons.

8 0

3 years ago

Help !!! Pick all the apply

Sergio [31]

The answer is the Second one

6 0

3 years ago

A projectile is launched from the surface of a planet (mass = 15 x 1024 kg, radius = R = 9.6 x 106 m). What minimum launch speed

Serjik [45]

Answer:

The minimum launch speed is 13366.40 m/s.

Explanation:

Given that,

Mass of planet $M=15\times10^{24}\ kg$

Radius $R= 9.6\times10^{6}\ m$

Height = 6R

We need to calculate the speed

Using relation between gravitational force and total energy

$-\dfrac{GMm}{6R+R}=\dfrac{1}{2}mv^2-\dfrac{GMm}{R}$

$\dfrac{}{}mv^2=\dfrac{GMm}{7R}-\dfrac{GMm}{R}$

$\dfrac{1}{2}mv^2=\dfrac{6GMm}{7R}$

$v^2=\dfrac{2\times6GM}{7R}$

Put the value into the formula

$v=\sqrt{\dfrac{2\times6\times6.67\times10^{-11}\times15\times10^{24}}{7\times9.6\times10^{6}}}$

$v=13366.40\ m/s$

Hence, The minimum launch speed is 13366.40 m/s.

6 0

3 years ago

Read 2 more answers

Energy of fossil fuel is also derived from solar energy why

zzz [600]

Explanation:

All the energy in oil, gas, and coal originally came from the sun captured through photosynthesis. In the same way that we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured from the sun.

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3 years ago

If the Moon's orbit were perpendicular to the ecliptic, would eclipses be possible? What would be the most common phase of the M

tangare [24]

Answer:no

Explanation:

5 0

4 years ago

Why can't heat be transferred between two objects that have the same temperature￼

Why can't heat be transferred between two objects that have the same temperature