Question

1. A large monument is built of iron and is 250m tall. determine the change in height, if the temperature changed 23 celsius to 38 degree celsius. The coefficenf of therm expansion for ifon is .000012 per degrees celsius.

a) 4.5 cm

b) 45 m

c) 4.5mm

d) 250 m

2. Which one is not a unit of pressure ?

a) mbar

b) hp

c) Pa

d). PSI

3. Which pressure is larger ?

a) 60 kPa

b) 17.5 PSI

c) 5 atm

d) 25 Pa

4. A hot cup of tea has a mass of 60g with a temperature of 95° C . A person decides to pour 10g of cols water at 10° . Determine the equilibrium temperute .

a) 90° C

b) 82.9°C

c) 52.5°C

d) 10 ° c

Answer 1