Answer:
I think they are all correct
Answer:
science is good U will be a genius
Answer:
The amount of heat released when 50 g of water cooled from 20°C to 10°C will be equal to - 2093 J.
Explanation:
Given data:
Mass of water = 50 g
Initial temperature= T1 = 20°C
Final temperature= T2 = 10°C
Specific heat of water= c = 4.186 J/g. °C
Amount of heat released = Q= ?
Solution:
Formula:
Q = m. C. ΔT
ΔT = T2 - T1
ΔT = 10°C - 20°C
ΔT = -10°C
Now we will put the values in formula.
Q = m. C. ΔT
Q = 50 g . 4.186 J/g. °C . -10°C
Q = - 2093 J
The amount of heat released when 50 g of water cooled from 20°C to 10°C will be equal to - 2093 J.
Explanation:
the answer is C- H2O (water)
Answer:
In the explanation
Explanation:
First of all, make sure you re-read the lesson carefully and memorize the definitions. pls
forces are push and pull.
And just give an example of like someone pushing a sofa into the living room (push).
Another example of pull is pulling a door knob to open a door.
And ANOTHER example can be pushing a tissue box or anything.
Forces can be balanced and unbalanced, that is correct.
When the netforce is equal to 0 then it is balanced, if not then it’s unbalanced.
Balanced which results a netforce equals to 0, there is no change in motion.
Unbalanced which causes in the object's motion changing (For example an tug of war, some guy pulls 10N to the right and the other person 5N to the left, obviously the netforce will be 5N to the right; Unbalanced force)
Last two boxes, maybe add examples as I mentioned? And add another example from ur textbook or something.
