Question
Write the formula for the terminal velocity of a small bullet freely falling in a viscous fluid.
✓
Answer
$\text v_t=\frac{2 r^2(\rho-\sigma) g}{9 \eta}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Give the S.I. units of 'g' and 'G'.
How many beats are formed when two sources vibrate in unison?
Is a force required to maintain a body in its state of uniform motion along a straight line?
Mark the correct statements:
- Equations of special relativity are not applicable for small speeds.
- Equations of special relativity are applicable for all speeds.
- Nonrelativistic equations give exact result for small speeds.
- Nonrelativistic equations never give exact result.
A pipe 20cm long is closed at one end. Which harmonic mode of the pipe is resonantly excited by a source of 1237.5Hz?(sound velocity in air $= 330ms^{–1}$)
→Read each statement below carefully and state, with reasons and examples, if it is true or false: A scalar quantity is one that Must be dimensionless.
For the projectile path to be rectilinear, the value of angle of projection should be equal to how many degrees?
Can the motion of an artificial satellite around earth be taken as S.H.M?
A river is flowing due east with a speed $3 m/ s$. A swimmer can swim in still water at a speed of $4 m/ s$ Fig.
→- If swimmer starts swimming due north, what will be his resultant velocity (magnitude and direction)?
- If he wants to start from point A on south bank and reach opposite point B on north bank,
- which direction should he swim?
- what will be his resultant speed?
- From two different cases as mentioned in (a) and (b) above, in which case will he reach opposite bank in shorter time?
Name the type of motion associated with the molecules of a gas.