Let m be the density of iron
Let M be the density of copper
So, m = M = 101.5 grams
We know that the formula for mass is:
m = d x v
where:
m is mass
d is density
v is volume
the density of iron is calculated by d = m / v, we derived this formula from the mass formula.
So d = 6.8g/ 3.3cm^3 = 2.26 g/cm^3
It was said that the density of iron is more than the density of copper, so 6.8 should be greater than 2xd, it indicates that d is less than 3.4.
Therefore, the density of copper is more likely less than 3.4g/cm^3
2(9p + 13)
Hope this helps!!!!
Answer:
5 seconds
1220 ft
Step-by-step explanation:
Step 1: Know when the stone reaches the maximum height
We know the maximum or minimum height of a parabola is at the vertex so we need to find the vertex
Step 2: Calculate the vertex
The t coordinate of the vertex can be calculated with 
b = 160
a = 16

Step 3: We know the t coordinate we can find the height at that time

Therefore the stone reaches its maximum height of 1220 ft in 5 secs
Answer:
4 lb
Step-by-step explanation:
10+14+40=64 oz = 4lb