Question

Q=187 мдж а=121 кдж U=?

Answer 1

U=A:Q

U= 121:187=0.65В

Answer 2

To solve for the value of U, we can use the equation:

Q = U + a

where Q represents the total energy, U represents the internal energy, and a represents the work done on or by the system.

Given: Q = 187 MJ (note: MJ stands for megajoules, not mdj) a = 121 kJ (note: kJ stands for kilojoules, not kdj)

To ensure consistent units, we need to convert kilojoules (kJ) to megajoules (MJ) by dividing by 1000:

a = 121 kJ = 121/1000 MJ = 0.121 MJ

Now, we can substitute the given values into the equation:

187 MJ = U + 0.121 MJ

To solve for U, we need to isolate it on one side of the equation. By subtracting 0.121 MJ from both sides, we get:

U = 187 MJ - 0.121 MJ

Calculating the result:

U = 186.879 MJ

Therefore, the value of U is approximately 186.879 megajoules.