Question

1. At 25°C, the length of the glass is 50 cm. After heating, the final length of
the glass is 50.9 cm. Find the coefficient of linear expansion if it was heated
upto 225°C.
1
2. The original length of metal is 1 meter and the final length is 1.02 m. The
change in temperature is 50 Kelvin. Determine the coefficient of linear
expansion.
3. Mercury contained in a thermometer has a volume of 476 mm'at 15°C.
Determine the temperature at which the volume of mercury is 478 mm',
assuming the coefficient of cubic expansion for mercury to be 1.8 x 10-4 K-!
4. The coefficient of superficial expansion of s solid is 2x10*C. What will be
its coefficient of linear expansion?
5. At 30 °C, the area of a sheet of aluminum is 40 cm and the coefficient of
superficial expansion is 24 x 10° °C. Determine the final temperature if the
final area is 40.2 cm.
6. It takes 20s for a girl A to climb up the stairs while girl B takes 15 s for the
same job.
(a) Compare the work done.
(b) Compare the power spent by then.
7. A pump raises water by spending 4*10* J of energy in 10 s. Find the power
of the pump
8. A car is moving with a speed of 15 km land another identical car is
10:53
ENG 09-01-2021

Answer 1

Answer:

The evening time in the summer is the best part. You'll see cold chilling breeze blowing by your wind, feel the cozy sunshine and could see the sun setting.

It's the best part when you could eat your favourite mango custard made specially by your mom on summers by the window.

You could see the birds going back to their nests, the cats yawning and going and rest, and the chicken to marching forward to their farms.