!: (a) 20 cm: 80

10. Some mercury is poured into a capillary tube of

uniform bore and one end closed. When the tube

is held horizontally, mercury column has a length

of 4 cm and air enclosed in the closed end has a

length of 10 cm. If the tube is now held vertically,

with open end upwards, the length of the air

column will be (take atmospheric pressure at the

Tale place of experiment to be 760 mm)

(a) 10.5 cm . (6) 8.5 cm ",JI

(c) 9.0 cm mati (d) 9.5 cm 0

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.

i think it's letter a.

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.