Aperson cooks a meal in a 30-cm-diameter pot that is covered with a well-fitting lid and lets the food cool to the room temperature of 20°c. the total mass of the food and the pot is 8 kg. now the person tries to open the pan by lifting the lid up. assuming no air has leaked into the pan during cooling, determine if the lid will open or the pan will move up together with the lid.

Pan will move up together with the lid.

Explanation:

Given

diameter of pot(d)=30 cm

Temperature of room

assume vapor pressure of water at 293 K is

mass of food and the pot=8 kg

Pressure Difference

Area of lid

Force due to Pressure difference

Downward Force opposing it will be weight=mg

Downward force is less than force due to pressure difference thus Pan will move up together with the lid

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: