Answer:
Absolute error 
% Error 
5
Explanation:
The absolute error is the the difference in the measured value and the actual value of a quantity.
Here the actual value is 
grams
The measured value is 
grams
Absolute error
Percent error
Where AE stands for absolute error and AV stands for absolute value.
%
I think its answer choice A because it would better to talk to their parents first and not take matters into your own hands.
When this happens, light changes speed and the light ray bends, either toward or away from what we call the normal line, an imaginary straight line that runs perpendicular to the surface of the object.
Answer:
synthesis reaction
Explanation:
A synthesis reaction occurs when two or more reactants combine to form a single product. In a decomposition reaction, one reactant breaks down into two or more products. This is the reverse of a synthesis reaction. Replacement reactions occur when elements switch places in compounds.
Answer : The energy required to heat of 1.50 kg iron is, 
Explanation :
Formula used :
or,
where,
Q = heat required = ?
m = mass of iron = 1.50 kg = 1500 g
c = specific heat of iron = 
= initial temperature = 
= final temperature = 
Now put all the given value in the above formula, we get:
Therefore, the energy required to heat of 1.50 kg iron is,
