Answer: .4 m/s^2= acceleration
Explanation:
f = m*a
We can rearrange this equation to solve for acceleration. Therefore,
a=f/m
a= 28N/70kg
a= 0.4 m/s^2
sure its kinda sad a random person breaks your heart
Answer: +2.10V
Explanation:

Using Nernst equation :

![E_{cell}=E^o_{cell}-\frac{0.059}{n}\log [Al^{3+}]^2\times [I^-]^6](https://tex.z-dn.net/?f=E_%7Bcell%7D%3DE%5Eo_%7Bcell%7D-%5Cfrac%7B0.059%7D%7Bn%7D%5Clog%20%5BAl%5E%7B3%2B%7D%5D%5E2%5Ctimes%20%5BI%5E-%5D%5E6)
where,
= standard emf for the cell = +2.20 V
n = number of electrons in oxidation-reduction reaction = 6
= emf of the cell = ?
= concentration = 
= concentration = 
Now put all the given values in the above equation, we get:
![E_{cell}=+2.20-\frac{0.059}{6}\log [5.0\times 10^{-3}]^2\times [0.10]^6](https://tex.z-dn.net/?f=E_%7Bcell%7D%3D%2B2.20-%5Cfrac%7B0.059%7D%7B6%7D%5Clog%20%5B5.0%5Ctimes%2010%5E%7B-3%7D%5D%5E2%5Ctimes%20%5B0.10%5D%5E6)

The standard emf for the cell using the overall cell reaction below is +2.10 V
Answer:
Explanation:
Flux Φ = nBA sinωt
t = 0 , flux = 0
dΦ / dt = nωBA Cosωt
e = nωBA Cosωt
= 100 x 2πx80 x.3 x .003 cos 2πx80 x .014
= 45.21 cos 7.0336
= 33.0668 v
= 33.1 V
Answer:
5.45 J
Explanation:
When the 3.4 kg weight is moving with a speed of 1.1 m/s, what is the kinetic energy of the entire system?
RKE = 
where;





RKE = 
= 
= 3.75 J
LKE = 
= 
= 1. 7 J
K.E = RKE + LKE
K. E = ( 3.75 + 1.7 ) J
K . E = 5.45 J