Explanation:
d. endothermic change as
heat is added to solid ice to change it to liquid water
Answer:
If a metal and metal solution react, the more reactive metal will displace the less reactive metal from solution. If the metal in solution you start with is formed from a more reactive metal than the metal to be added, no reaction will occur.
(10)an object will continue to travel at a constant speed unless acted by an unbalanced force according to newtons second law every force acted on a body has a equal and opposite reaction so the speed and the direction of the object will change.
(9) balanced force (i think so )
hope this is what you needed the 10th one is for understanding you can shorten it after reading and i think what i have written is not wrong :P:P:P;p:P:):):):D=) for the ninth one i am not sure but i think so :P:)=)
since, a,b is an acid.. imposibble it is the answer
we left with c and d
while we can see that 'hyroxide' is a base
answer: C
Answer:
+3·F
Explanation:
The number of objects in the given system = 2 objects
The charge on each object are; q₁ = -Q, q₂ = -Q
The force acting between the objects = +F
The distance between the objects = 2·d
The formula for the force acting between two charged particles is given as follows;

Therefore, we get;

By tripling the charge, q₁, on the first object, we get;
q₂ = 3 × (-Q)

Therefore, the new force between them, F₂ = +3·F