The mass of a spaceship is $1000\,kg$. It is to be launched from the earth's surface out into free space. The values of $g$ and $R$ (radius of earth) are $10\,m/s^2$ and $6400\,km$ respectively. The required energy for this work will be:
- A$6.4\times10^{11}\,J$
- B$6.4\times10^{8}\,J$
- C$6.4\times10^{9}\,J$
- D$6.4\times10^{10}\,J$
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When a current of $2\, A$ flows in a battery from negative to positive terminal,the potential difference across it is $12\, V$. If a current of $3\, A$ flows in the opposite direction,the potential difference across the terminals of the battery is $15\, V$. The $emf$ of the battery is ................ $V$.
Which of the following fluorides of Xenon is impossible?
Match List-$I$ with List-$II$ and select the correct option.
List-$I$ List-$II$ $A$. Cardiac Arrest $(i)$. Insufficient blood supply to the body $B$. Heart Failure $(ii)$. Heart muscle is suddenly damaged $C$. Heart Attack $(iii)$. Chest pain due to inadequate oxygen $D$. Angina $(iv)$. Heart stops beating
| List-$I$ | List-$II$ |
| $A$. Cardiac Arrest | $(i)$. Insufficient blood supply to the body |
| $B$. Heart Failure | $(ii)$. Heart muscle is suddenly damaged |
| $C$. Heart Attack | $(iii)$. Chest pain due to inadequate oxygen |
| $D$. Angina | $(iv)$. Heart stops beating |
Assertion: The isothermal curves intersect each other at a certain point.
Reason: The isothermal change takes place slowly,so,the isothermal curves have very little slope.
Reason: The isothermal change takes place slowly,so,the isothermal curves have very little slope.
The energy-releasing metabolic process in which substrate is oxidized without an external electron acceptor is called:
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