if they ask ri to find then we should do u=speed in vacum /speed in medium or aUm = speed in vacum /" |
|
asked by Somay Vaidh (somay2003) 6 years ago | |
2 |
a calorimeter of mass 50g and specific heat capacity 0.42J/gC contains water at 20C a piece of metal mass 20g and specific heat capacity 0.3J/gC at 100C is added, the final temperature is 22C find the mass of water used |
|
asked by Rajni Rastogi (arnav21) 6 years ago | |
3 |
Hey guys Problems related to lens are not there in the scope do we have to do? The formula 1/v - 1/u = 1/f . These sums are not there in scope |
|
asked by Panna Thakkar (panna2431) 6 years ago | |
3 |
How is focal length related to r.i.? |
|
asked by Momo (zenab13) 6 years ago | |
1 |
if the value of g is not given. which one should be used :- 9.8 OR 10???? |
|
asked by Atharva Raibagi (iamatharva62) 6 years ago | |
3 |
hiiii,could someone help me with these qns?? 1)in selina pg 46,qn 6 The bob of a simple pendulum is imparted a velocity of 5m/s when it is at its mean position.To what max vertical ht will it rise on reaching at its extreme position if 60% of its energy is lost in overcoming the friction of air??(Answer 0.75m) plzz explain how to solve it. 2)pg;67 qn 2: A fixed pulley is driven by a 100kg mass falling at a rate of 8.0m in 4s.It lifts a load of 75kgf.calc: (a)the power input (b)efficiency (c)ht to which the load is raised in 4s. I did the first part but dont know how to do the rest.Plzz help.... 3)in selina,there are no experiments given for calorimetry.Then should I learn that??? plzz answer asap............ |
|
asked by Snigdha (silver2002) 6 years ago | |
3 |
Define one dioptre |
|
asked by Tiara Elizabeth (thejtthomas) 6 years ago | |
4 |
Two medical uses of SONAR??? |
|
asked by Aayush Joshi (aayushjoshi) 6 years ago | |
7 | |
who are moderators in board and what they do |
|
asked by Rtstud (mdarfath) 6 years ago | |
1 |
Unit of intensity |
|
asked by Gangadharanpillai Gangadharanpillaik (jgpvgp) 6 years ago | |
4 |
Page 121 |
ICSE chat