একটি সান্দ্র তরলে 2 সেমি ব্যাসের বলের অভিন্ন গতি হল `20cm//s`। তারপর, গতি 1 সেমি di...

Uniform speed of 2 cm diameter ball is 20cm//s in a viscous liquid. Then, the speed of 1 cm diameter ball in the same liquid is

A glass full of water has a bottom of area 20 cm^(2) , top of area 20 cm , height 20 cm and volume half a litre. a. Find the force exerted by the water on the bottom. b. Considering the equilibrium of the v , after. find the resultant force exerted by the side, of the glass on the water. Atmospheric pressure = 1.0 xx 10^(5) N//m^(2) . Density of water = 1000 kg//m^(-3) and g = 10 m//s^(2)

A block of mass 1.2 kg moving at a speed of 20 cm /s collides head on with a similar block kept at est. The coefficient of restitution is 3/5. findthe loss of kinetic energy during the collision.

The period of oscillation of a simple pendulum is T = 2pisqrt(L//g) . Measured value of L is 20.0 cm known to 1mm accuracy and time for 100 oscillations of the pendulum is found to be 90 s using a wrist watch of 1 s resolution. What is the accuracy in the determination of g?

Microwave ocillators S_(1) and S_(2) are used to show interference of electromagnetic waves on a screen which in parallel to S_(1) S_(2) and 2 m away from S_(1)S_(2) . If S_(1)S_(2)=20 cm and lamda=4cm , then the distance between the successive maxima and minima will be

A cylindrical vessel open at the top is 20cm high and 10 cm in diameter. A circular hole of cross-sectional area 1cm^(2) is cut at the centre of the bottom of the vessel. Water flows from a tube above it into the vessel at the rate of 10^(2)cm^(3)//s . The height of water in the vessel under steady state is (Take g=10m//s^(2)) .

An LR circuit has L = 1.0 H R =20 Omega . It is connected across an emf of 2.0 V at t=0 . Find di/dt at (a) t =100ms, (b) t =200 ms and (c )t = 1.0 s .

Two trains, each of length 100 m moveing in opposite direction along parallel lines, meet each other with speeds of 50 km h^(-1) and 40 km h^(2) . If their other with are 30 cm s^(-2) and 20 cm s^(2) and 20 cm s^(2) , respectively, find the time they will take to pass each other.