Question

Q=300 Дж U=200 Дж A=?

Answer 1

Q = 300 Дж.

ΔU = 200 Дж.

A - ?

Согласно первому закону термодинамики: количество теплоты Q, которое сообщается газу, идет на увеличение его внутренней энергии ΔU и на выполнение газом работы над внешними силами A.

Q = ΔU + A.

Выразим работу из формулы:  

A = Q - ΔU.

A = 300 Дж - 200 Дж = 100 Дж.

Ответ: газ выполнил работу A = 100 Дж.

Answer 2

To find the value of acceleration (A), we can use the formula:

$U = Q + W$

where:

$U$ = final kinetic energy (in joules), $Q$ = initial kinetic energy (in joules), $W$ = work done (in joules).

Given that $U = 200 \, \text{J}$ and $Q = 300 \, \text{J}$, we can find the work done ($W$) as follows:

$W = U - Q$ $W = 200 \, \text{J} - 300 \, \text{J}$ $W = -100 \, \text{J}$

Now, we can use the work-energy principle to find the acceleration (A):

$W = F \cdot d$

where:

$F$ = force (in newtons), $d$ = displacement (in meters).

Since $W = -100 \, \text{J}$, the work done is negative, which means there is a force opposing the motion. However, from the given values, we don't have enough information to directly calculate the acceleration. We need additional information such as the distance (displacement) over which the force acts to compute the acceleration.

If you provide the displacement (d) or any other relevant information, I can help you calculate the acceleration (A) using the appropriate equations.