A beaker containing water at 373 K is representig an open system, is placed in the room. Predict the nature of work done.

Two beaker contain hot water of the same temperature one beaker is placed in anotehr beaker containing cold water and the other breaker in fornt of a rotating fan .It is observed that the beaker placed infront fan cools faster .explain the reason

A copper slug whose mass m_(c ) is 75 g is heated in a laboratory oven to a temperature T of 312^(@)C . The slug is then dropped into a glass beaker containing a mass m_(w ) = 220g of water. The heat capacity C_(b) of the beaker is 45 cal // K. The initial temperature T_(i) of the water and the beaker is 12^(@)C . Assuming that the slug, beaker, and water are an isolated system and the water does not vaporize, find the final temperature T_(f ) of the system at thermal equilibrium.

A closed bottle containing water at room temperature is taken to the moon and then the lid is opened. The water will ……………… .

1 A close bottle containing water at room temperature was taken to the Moon and then the lid is opened The water will

A mixture of oxygen and inflammable gas is burnt in a closed vessel placed in water The temperature of water rises. Consider water and mixture as one system, (ii) has work been done on water ?

If the above system is an open vessel the work done is

A beaker contains water up to a height h_1 and K oil above water up to another height h_2. Find the apparent shift in the position of the bottom of the beaker when viewed from above. Refractive index of water is mu_1 and that of K.oil is mu_2 .

A beaker contains water up to a height h_1 and K oil above water up to another height h_2. Find the apparent shift in the position of the bottom of the beaker when viewed from above. Refractive index of water is mu_1 and that of K.oil is mu_2 .