A liquid flows through two capillary tubes A and B connected in series. The length and radius of B are twice those of a. What is the ratio of the pressure difference across A to that across B ?

Two wires A and B have the same length and area of cross section. But young's modulus of A is two times the young's modulus of B. Then what is the ratio of force constant of A to that of B?

The coefficient of viscosity of a liquid flowing through a narrow tube is given by eta=(pipr^(4))/(8Vl) where r and l are the radius and the length of the tube p is the pressure difference between its two ends and V is the volume of liquid flowing per unit time. Here the values of p,r,V and l are 75 cm Hg, 0.35 cm, 1.5 cm^(3)//s and 20.5 cm. respectively , the errors in their measurement are 0.1 cm Hg. 0.01 cm, 0.1 cm^(3)//s and 0.1 cm. respectively. Estimate the percentage error in the computed value of eta .

Two capacitors of capacitance C_1 and C_2 are connected in series and a voltage V is applied across them.'What is the P.D. across C_1 :

The density of a gas A is thrice that of a gas B at the same temperature. The molecular weight of gas B is twice that of A. what will be the ratio of the pressures acting on B and A-

The capacitances of two capacitors are 2 mu F and 8 mu F . They are connected in series and a potential difference of 100 V is applied across the combination. What are The potential differences across the two capacitors?

Two resistances 1 Omega and 2 Omega are connected in series and a potential difference of 6V is applied across the ends of this combination. What will be the terminal potential difference across the second resistance?