Straws are used to take soft drinks. Why?

Permanent magnets are made of steel while the electromagnets are made of soft iron. Why?

Permanent magnets are made of steel while the electromagnets are made of soft iron. Why?

What will be the pH of a soft drink if hydronium ion concentration is sample is 3.8/10 3M?

Why do we need to take food?

Why soft iron core is used to make electromagnets ?

A soft drinks manufacturing company is preparing a production plan on two types A and B of soft drinks. There is sufficinet materail available to make 20000 bottles of drink A and 40000 bottles of drink B but there are only 45000 empty bottles into either hte drinks can be filled. Further, it takes 3 hours to fill 1000 bottles of drink A and one hour to fill 1000 bottles of drink B. there are only 66 hours available for filling. The profit is Rs.2 per bottle for drink A and Rs.1 per bottle of drink B. Set up this problem as a linear programming problem and find graphically the production scheduled in order to maximize the profit.