Thursday
December 8, 2016

# Posts by Praveen

Total # Posts: 23

Physical Science
How much energy is released when 10 gm of steam at 100 degree Celsius turns to ice at 0 degree Celsius
November 13, 2016

Math
In an examination of 100 marks a person attempted 77 questions and got 42 correct answer and 35 wrong answer. If each correct answer carried 2 marks and wrong answer carried 0.50 marks. How much total marks the person scored?
September 22, 2016

arithmetic
A set of 7 numbers has a mean of 9. What additional number must be included in this set to create a new set with a mean that is 3 less than the mean of the original set?
October 20, 2014

Answer: \$9.94/pound Shop paid: 600 lbs X \$5.59 = \$3,354 Assuming 10% spoilage, shop really purchased only 540 lbs at a total cost of \$3,354 The cost to the shop including the spoilage = \$6.21/lb 60% markup = \$9.94/lb
October 20, 2014

math(urgent)
if x+ y is 25 more than x-y then x is what percent of y ?
May 22, 2014

math
if x y is 25 more than x-y then x is what percent of y ?
May 22, 2014

math
i think B is correct
May 15, 2014

physics
A thin steel hoop of weight W and radius r starts from rest at A and rolls down along a circular cylindrical surface of radius a as shown in Fig. G. Determine the angle defining the position of point B where the hoop will begin to slip if the coefficient of friction at the ...
April 14, 2013

Science
What will be the vapor pressure of Mono Chloro Benzene at 180 - 250 degree Celsius.
August 28, 2012

chemistry
heat gained by rod + heat lost by H2O = 0 [mass Fe x specific heat Fe x (Tfinal-Tinitial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 32.2*0.450*(58.6-22.3)+m*4.179*(58.6-63.9)=0 525.987=m*22.148 m=23.748 grams
March 19, 2012

chemistry
heat gained by rod + heat lost by H2O = 0 [mass Fe x specific heat Fe x (Tfinal-Tinitial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 32.2*0.450*(58.4-22.8)+m*4.179*(58.4-63.7)=0 515.844=m*22.148 m=23.3 grams
March 19, 2012

Physics
A capacitor of 4.5 MF, charged to 50v, is connected to another capacitor of = MF, charged to 100v. The total energy of the combination is
August 4, 2011

If a particle's motion is described as x = ut+1/2at^2, where x is position, t is time and u and a, are constants. Show that the acceleration of the particle is constant
August 5, 2010

A bus is moving with a velocity of 10m/s. A motor cyclist wishes to overtake the bus in 60 seconds. With what velocity the motor cyclist should chase the bus which is 1km ahead of him?
August 5, 2010

An aircraft has a take-off speed 180km/h and length 250m from the start just before take-off a serious snag is detected in the engine and the aircraft failed to take-off. There is a wall at a distance 'd' = 230m ahead of the take-off point. The pilot applies breaks ...
July 27, 2010

An aircraft has a take-off speed 180km/h and has length 250m from the start just before take-off a serious snag is detected in the engine and the aircraft failed to take-off. There is a wall at a distance 'd' = 230m ahead of the take-off point. The pilot applies breaks...
July 27, 2010

The answer to this question is 62.5s. Can you please explain it properly what is that Vf^2 = 2ad
July 27, 2010

The maximum speed of a bus is 72km/h, it accelerates uniformly at the rate of 1m/s^2 and retards uniformly at the rate of 4m/s^2. Find the least time in which it can do a journey of 1km ?
July 27, 2010

So what can i do and please keep your lecture to yourself. I also know aht u wrote!!! And please help me and don't give moral lecture. N i didn't insult or make fun of anyone i just wanted help which i didn't get because you wrote something else out here!!!
July 24, 2010

science
what is the immediate response of human body soon after a poisoning.what type of reactions take place?
January 29, 2010