MCQ
The efficiency of an engine will be maximum when it works:
- ABetween 300K and 250K temperature
- BBetween 600k and 300K temperature
- CBetween 800K and 400K temperature
- ✓Between 100K and 10K temperature
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${y_1} = 0.05\,\cos \,\left( {0.50\,\pi x - 100\,\pi t} \right)$
${y_2} = 0.05\,\cos \,\left( {0.46\,\pi x - 92\,\pi t} \right)$
then velocity is..... $m/s$