Answer:
An object which experiences either a change in the magnitude or the direction of the velocity vector can be said to be accelerating. This explains why an object moving in a circle at constant speed can be said to accelerate - the direction of the velocity changes.
Explanation:
Answer : The metal used was iron (the specific heat capacity is 
).
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of metal = ?
= specific heat of water = 
= mass of metal = 47.1 g
= mass of water = 120 g
= final temperature of water = 
= initial temperature of metal = 
= initial temperature of water = 
Now put all the given values in the above formula, we get
Form the value of specific heat of metal, we conclude that the metal used in this was iron.
Therefore, the metal used was iron (the specific heat capacity is ).
Answer:
No
Explanation:
We cannot identify an atom without knowing numbers of protons in the atom.
The number of neutrons is the amount of neutrally charged particles in an atom. These subatomic particles occupy the dense nucleus with the protons.
- To determine an atom, we use their atomic numbers.
- Atomic number is the number of protons in an atom.
- Protons are the positively charged particles in the atom.
- The periodic table of elements is arranged by the atomic number of an element.
Answer:
the smoke one
Explanation:
it can be made aware of and people can raise money to stop it/ help it
