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Juee Dhar
Subject: Physics
, asked on 4/12/17
the ques says that the sspecific heat of ice is 0.5 while in the solutions it uses 1 as the value .pls correct it.
Answer
1
Nura Mohammad
Subject: Physics
, asked on 3/12/17
The propotionality constant k in newtons law of heating depends on area nd nature of the surface of the body. Can u plz expand and explain .. Also explain by giving examples
Answer
2
Vedant
Subject: Physics
, asked on 1/12/17
Solve this:
A metal rod 'A' of length l
o
expand by
∆
l
when its temperature is raised by 100
o
C. Another rod 'B' of different metal of length 2l
o
expand by
∆
l
2
for same rise in temperature. A third rod 'A' heating through 100K. The length of each portion of the compound rod is :
(
1
)
5
3
l
0
,
4
3
l
0
(
2
)
l
0
,
2
l
0
(
3
)
3
l
0
2
,
3
l
0
2
(
4
)
2
3
l
0
,
7
3
l
0
Answer
1
Arshia Sharma
Subject: Physics
, asked on 30/11/17
Solve this:
Example 10. A clock with an iron pendulum keeps correct time at 20
0
C. How much will it lose or gain if temperature changes to 40
0
C ? Coefficient of cubical expansion of iron = 36
×
10
-6
0
C
-1
.
Answer
1
Nura Mohammad
Subject: Physics
, asked on 25/11/17
Solve this:
8. Explain:
(i) Why does the air pressure in a car tyre during driving increase?
(ii) Why coolant used in chemical plant should have high specific heat?
Answer
1
Nura Mohammad
Subject: Physics
, asked on 16/11/17
in physics class 11 chapter 11 q. 11.19(exercise q) why is temp taken as 45 deg celcius and not in kelvin even when thermal conductivity k's unit is in terms of kelvin
Answer
1
Sandhya Karthik
Subject: Physics
, asked on 16/11/17
mass 100 g and sp.heat capacity 420j/kg-k falls from a ht of 100 m if 1 half of energy at the mmt goes to heat the body which change will be in its temp?
Answer
2
Kabir Chhabra
Subject: Physics
, asked on 25/10/17
The area of the face will increased by 0.01% on heating. how much is the area of its faces and volume increases?
Answer
1
Rajib
Subject: Physics
, asked on 17/10/17
Q. How P1
Answer
1
Rajib
Subject: Physics
, asked on 12/10/17
please explain the purpose of putting negative sign in the formula
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Answer
1
Priyanshi
Subject: Physics
, asked on 11/10/17
How to do these kind of problems i am not getting
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Answer
3
Rajib
Subject: Physics
, asked on 7/10/17
0.75 gram of Petroleum was burnt in a Bomb calorimeter which contains 2 kilogram of water and has a water equivament 500 gram.the rise in temoerature is 3 degree celcius
Answer
2
Krishna Vamsi
Subject: Physics
, asked on 22/4/17
32 question please
Answer
1
Krishna Vamsi
Subject: Physics
, asked on 14/4/17
7th question please
Answer
1
Vyshnavi Rohil
Subject: Physics
, asked on 13/4/17
Solve this:
Answer
1
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What are you looking for?
the ques says that the sspecific heat of ice is 0.5 while in the solutions it uses 1 as the value .pls correct it.
A metal rod 'A' of length lo expand by when its temperature is raised by 100oC. Another rod 'B' of different metal of length 2lo expand by for same rise in temperature. A third rod 'A' heating through 100K. The length of each portion of the compound rod is :
Example 10. A clock with an iron pendulum keeps correct time at 200C. How much will it lose or gain if temperature changes to 400C ? Coefficient of cubical expansion of iron = 36 10-6 0C-1.
8. Explain:
(i) Why does the air pressure in a car tyre during driving increase?
(ii) Why coolant used in chemical plant should have high specific heat?