Nwhich case does viscosity play a dominant role? case
a. a typical bacterium (size ~ 1 mm and velocity ~ 20 mm/s) in fresh water. case
b. a swimmer (size ~ 1.5 m and velocity ~ 3 m/s) in fresh water.

more than, less

less than, more

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.