Two glasses capillary tube of diameter 0.05mm and 2.00mm are dipped in a pool of water. How high will the water rise in each of the tubes?​

Explanation:

The height h through which a liquid will rise in a capillary tube of radius r is given by

h=

rρg

2Scosθ

, where S is the surface tension, ρ is the density of the liquid and θ is the angle of contact.

⇒h=

(0.2×10

−3

)×10

3

×10

2×7.2×10

−2

×1

=7.2×10

−2

m=7.2cm≈7cm

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.