Meenakshi
Most popular questions and responses by Meenakshi
maths plse help me..
The pilot of an aircraft flying horizontally at a speed of 1200 Km/hr observes an angle of depression of a point on the ground changes from 30 degree to 45 degree in 15 seconds. Find the height of the aircraft at which it is flying?
asked on December 13, 2012 
maths
Find a30 a20 for the AP a, a+d, a+2d, a+3d........
asked on December 4, 2012 
physics
If your weight is 300 N what is the upthrust on you when you are floating in water
asked on August 23, 2016 
maths
if the LCM of first 20 natural numbers is X, then what will be the LCM of first 25 natral numbers
asked on March 23, 2013 
physics
an object is placed 15 cm in front of a convex lens of focal length 10cm. Find the nature and position of the image formed. where should a concave mirror of radius of curvature 20cm be placed so that the final image is formed at the position of the object
asked on March 9, 2015 
physics
if the weight of the stone was 2 N and the upthrust was 1 N what weight would the force meter show?
asked on August 23, 2016 
maths plse help me..
The angle of elevation of the top of a tower as observed from a point on the ground is alpha and on moving a meters towards the tower, the angle of elevation is beta .prove that the height of the tower is a (tan alpha*tan beta)/(tan beta  tan alpha)
asked on December 13, 2012 
physics
the upthrust on a boat is 1000 N what is the weight of the boat
asked on August 23, 2016 
physics
on a cool night with no wind, people facing a campfire feel a breeze on their backs explain
asked on October 7, 2012 
mathsprobability
if a cube of 10 X 10 X 10 is slices into 1 X 1 X 1 cubes and then rearranged as earlier.if the outer most layer of cubes fall, how many cubes fall and how much are left....?
asked on December 4, 2012 
chemistry
N2+ 3H2 GIVES 2NH3 = 90.5 4NH3+5O2 GIVES 4NO+6H20 =905.1 H2 +0.5 O2 GIVES H2O =241.1 USE THESE VALUES TO DETERMINE ENTHALPHY CHANGES
asked on September 28, 2012 
Physics
The length breadth and the height of the brick is 25cm,7cm and 4cm respectively.Finf the pressure exerted by the Buick when it is kept 1.horizontally, 2.Vertically on a muddy floor and compare.
asked on October 24, 2016 
maths plse help me..
Let a,b,c be positive integers such that a divides b^2 , b divides c^2 and c divides a^2 . Prove that abc divides (a + b + c)^7 .
asked on December 9, 2012 
collegechemistry
calculate the ph of a buffer solution prepared by adding 0.397 mole of the sodium salt of a weak organic acid HA to 0.474 L of 1.023m acid HA with pka=4.82 and diluting to 1.00 L WITH WATER
asked on September 18, 2012 
Maths
When 100 is added to a number the result is 50 more than 3 times the number . Find the number
asked on December 22, 2016 
physics
What is current?
asked on May 20, 2015 
maths
Let a,b,c be positive integers such that a divides b^2 , b divides c^2 and c divides a^2 . Prove that abc divides (a + b + c)^7 .
asked on December 9, 2012 
collegephysics
how to write scientific report on physics
asked on September 19, 2012 
maths profit and loss
The profit on a certain item is 20%. If the CP is increased by Rs 50 and SP is increased by Rs 30 then the profit 5 reduces by 3 1/3%. Find the original CP and SP.
asked on December 4, 2012

science
acc. to me I feel let the distance be x km time for first bus = x/54 time for 2nd bus = x/36 total time = x/54 + x/36 = 90x/1944 total distance = 2x average speed = total distance / total time = 2x / (90x/1944) km/h = 2x*1944/90x km/hr = 43.2km/hr
posted on June 5, 2018 
physics
12345678910
posted on October 24, 2016 
physics
Electric current is expressed by the amount of charge flowing through a particular area in unit time
posted on May 20, 2015 
3rd grade math
A.
posted on March 23, 2013 
mathsprobability
plse explain me again..
posted on December 4, 2012