The masses are equal.
According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
I hope that this helps you!
Answer:
554.265 N
Explanation:
Without moving it means it is static. Since we know that normal friction is given by N=mg where m is the mass and g is acceleration due to gravity.
The static friction will then be given by multiplying the normal reaction by the coefficient of static friction. Taking g as 9.81, m as 113 kg and 0.5 for coefficient of static friction then
Fs= 0.5*113*9.81=554.265 N
Heat required to raise the temperature is given by formula
here
now here first temperature of water and aluminium container raised to 100 degree C then water is boiled away.
heat is calculated by formula
PART b)
If power supplied is 500 W
then time taken to give such amount of heat is
There are two kinds of electrical charge.
We call them 'positive' and 'negative' ... I guess nobody ever thought of better names.
One basic law of electric charges is:
Two of the same kind of charge repel each other.
One of each kind of charge attract each other.
Electrons all carry a negative charge.
So two electrons carry the SAME kind of charge, and so repel each other.
