Answer:
a = 40 [m/s^2]
Explanation:
This problem can be solved using Newton's second law which tells us that the sum of forces acting on a body must be equal to the product of mass by acceleration.
F = m*a
where:
m = mass = 0.4 [kg]
F = force = 16 [N]
a = acceleration [m/s^2]
Now replacing we have:
16 = 0.4*a
a = 40 [m/s^2]
D. because the statue has a new chemical called patina. It is no longer copper.
I think it is D sorry it’s wrong
Answer with Explanation:
We are given that
Egood=12 V
Rbatt,good=0.02ohm
Edead=10.8 V
Rbatt,dead=0.3 ohm
We have to find the current through the batteries connected in series and parallel.
When batteries are connected in series
V=Egood+Edead=12+10.8=22.8 V
R=Rbatt,good+Rbatt,dead=0.02+0.3=0.32 ohm
Current,I=![\frac{V}{R}](https://tex.z-dn.net/?f=%5Cfrac%7BV%7D%7BR%7D)
Using the formula
![I=\frac{22.8}{0.32}=71.25 A](https://tex.z-dn.net/?f=I%3D%5Cfrac%7B22.8%7D%7B0.32%7D%3D71.25%20A)
When the batteries are connected in parallel
V=Egood-Edead=12-10.8=1.2 V
R=0.02+0.3=0.32 ohm
![I=\frac{1.2}{0.32}=3.75 A](https://tex.z-dn.net/?f=I%3D%5Cfrac%7B1.2%7D%7B0.32%7D%3D3.75%20A)