It's the amount of heat you need to pump into 1 gram of the substance
in order to raise its temperature 1°C.
Different substances can have some wildly different values of specific heat.
The specific heat of water, potatoes, and rocks are especially high. That means
that those substances 'hold' a lot of heat ... which is why, before electric heating
pads were invented, rubber bags with these substances were used to warm up a
cold bed or to reduce the pain in a sore muscle.
Specific Joules:
heat of: per gm-°C
Lead 0.13
Copper 0.38
Iron 0.45
Aluminum 0.9
Water 4.2
Helium 5.2
Hydrogen 14.3
Don't quite understand the idea yet ?
Here's one way I like to think of it:
Here I have a soda straw, with the bottom end closed and some water in it.
How much water would you have to add to the straw to fill it 1 inch higher ?
Not much, right ?
OK. Now, here I have a beer barrel that's maybe about half full of water.
How much water would you have to add to the barrel to fill it 1 inch higher ?
MORE than the soda straw, right ?
OK. Now, here I have an olympic swimming pool with some water in it.
How much water would you have to add to the pool to fill it 1 inch higher ?
A lot ? I agree.
How much ? I don't know.
But definitely MORE than the straw or the barrel.
This is the way I understand specific heat:
-- The AMOUNT of water is like the heat-energy in the substance.
-- The DEPTH of the water is like the temperature of the substance.
-- The more water you pour into it, the deeper it gets.
-- The more heat you pour into it, the warmer it gets.
-- But some substances are "wider" than others.
. . . . . Lead is very skinny, like the straw.
0.13 joule of heat added to a gram of it is enough to raise it 1°C.
. . . . . Water is a 'fatter' substance, like the barrel.
You have to pour 4.2 joules into a gram of it, to raise it 1°C.
. . . . . Hydrogen is incredibly fat, like the pool.
You have to pour 14.3 joules into 1 gram of it, to raise it 1°C.
==> Hydrogen needs 110 times as much heat energy added as
Lead needs, to make 1 gram of each substance 1°C warmer than
they are now.
The specific heat of Hydrogen is 110 times the specific heat of Lead !
Answer:
here I am just giving an idea of how the graph will be like ...
In the pic..
Hope it helped u if yes mark me BRAINLIEST!
Tysm!
:)
A single pulley has no advantage in reducing force. A single pulley only helps by changing direction of effort, pulling something from up to down feels easier then vice versa due to our muscles arrangement. However, the force needed is the same.
Meanwhile multiple pullies divide the tension. The lower pulley itself reduces the force into half so as to you feel a part of the tension while rest is suspended by the ceiling in the case in the diagram below.
4 times more then real
Explanation:
if the radius of the earth decrease by 50% then the acceleration due to gravity increases by 4 times.
Answer:
h = 24.11 m
Explanation:
Given that,
The potential energy of the snowball is 520 J
The mass of the snowball is 2.2 kg
We need to find the height of the hill. The potential energy of an object is given by the formula as follows :
g is acceleration due to gravity
h is height of the hill
So, the height of the hill is 24.11 m.
