Please wait...
Contact Us
Contact
Need assistance? Contact us on below numbers

For Study plan details

10:00 AM to 7:00 PM IST all days.

Franchisee/Partner Enquiry (South)

Franchisee/Partner Enquiry (North, West & East)

OR

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number

9372462318 / 9987178554

Mon to Sat - 10 AM to 7 PM

Question 2

Asked by amitjena226 23rd December 2017, 12:02 AM
Answered by Expert
Answer:
Viscosity of water is  0.91 centi poise at 20 C. (0.91×10-2 poise). wrong data for viscosity of water is given in the question. For the answer I am using  8×10-3 poise  for viscosity of water.
 
terminal velocity is given by

begin mathsize 12px style v space equals space 2 over 9 fraction numerator r squared g open parentheses rho minus sigma close parentheses over denominator eta end fraction space equals space 2 over 9 fraction numerator 10 to the power of negative 2 end exponent cross times 980 cross times open parentheses 2.7 minus 1 close parentheses over denominator 0.91 cross times 10 to the power of negative 2 end exponent end fraction equals 407 space c m divided by s end style
r is radius of sphere, ρ is density of aluminium, σ is density of water and η is viscosity of water. Hence the 4.6 m/s is the correct answer.
Answered by Expert 23rd December 2017, 12:07 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer 9/10

Tags: viscosity
Your answer has been posted successfully!

Free related questions

23rd November 2020, 12:19 PM
NEET QUESTION ANSWERS

Chat with us on WhatsApp