4 - Surface tension Questions Answers

A man walks over a rough surface. The angle between the force of friction and the instantaneous velocity of the man is-               

A.      π

B.      π/2        

C.      Zero      

D.      2π           

Asked By: VIKAS 4 year ago
is this question helpfull: 2 2 read solutions ( 3 ) | submit your answer
Two bodies of mass m and 4m are attached with string as shown In the figure. The body of mass m hanging from a string of length I is executing oscillations of angular amplitude theta while the other body is at rest. The minimum coefficient of friction between the mass 4 m and the horizontal surface should be
Asked By: YOUSUF AMRE 5 year ago
is this question helpfull: 85 13 submit your answer

formatn of rain drop is/r involved

1)saturatn of vapour pressure

2) temp.

3)viscosity

4) surface tension

MORE THAN ONE OPTn IS/R CORRECT

Asked By: SARIKA 6 year ago
is this question helpfull: 4 0 submit your answer
Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

saturation of V P, because due to this drops will be created.

and surface tension cause for the shape of drop

IF MORE AIR IS PUSHED IN A SOAP BUBBLE THE PRESSURE IN IT WILL INCREASE OR DECREASE . PLS GIVE REASON ALSO

Asked By: SARIKA 6 year ago
is this question helpfull: 2 0 read solutions ( 1 ) | submit your answer
Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

since inside soap bubble pressure is given by the formula P0 + 4T/R and on pushing air  R will increase so pressure will decrease.

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