Sadly, no. The statement kind of has some appropriate words in it, but it's badly corrupted. Objects don't fall to Earth at a rate of 9.8 m/s, and the force that accelerates them downward is not a centripetal one.
Answer:
It's constant everywhere in its trajectory.
Explanation:
the projectile was launched with an initial velocity, the only acceleration that is affecting the projectile's velocity is gravity.
The acceleration of gravity is practically equal everywhere on earth, so during its trajectory, we have to take into consideration only the acceleration because of gravity.
This is only correct because the projectile was launched with an initial velocity and it's not accelerating from rest and then falls.
Answer:
V = 3.6 m/s
Explanation:
Given:
V₀ = 18 m/s
a = - 3,6 m/s² (The motorcycle is slowing down!)
t = 4 s
____________
V - ?
Motorcycle speed:
V = V₀ + a·t
V = 18 + (-3.6)·4 = 3.6 m/s
For the rest 3 km
Bholu need to run in 5 minutes so
He need to 3 × 1000 / 5 × 60 m/s
3000/ 300 = 10 m/s
So , his speed should be 1 m/s to reach in 5 minute
mark as brainliest 5 star
Answer : The cell emf for this cell is 0.077 V
Solution :
The balanced cell reaction will be,
Oxidation half reaction (anode): 
Reduction half reaction (cathode): 
In this case, the cathode and anode both are same. So, 
is equal to zero.
Now we have to calculate the cell emf.
Using Nernest equation :
![E_{cell}=E^o_{cell}-\frac{0.0592}{n}\log \frac{[Zn^{2+}{diluted}}{[Zn^{2+}{concentrated}]}](https://tex.z-dn.net/?f=E_%7Bcell%7D%3DE%5Eo_%7Bcell%7D-%5Cfrac%7B0.0592%7D%7Bn%7D%5Clog%20%5Cfrac%7B%5BZn%5E%7B2%2B%7D%7Bdiluted%7D%7D%7B%5BZn%5E%7B2%2B%7D%7Bconcentrated%7D%5D%7D)
where,
n = number of electrons in oxidation-reduction reaction = 2
= ?
![[Zn^{2+}{diluted}]](https://tex.z-dn.net/?f=%5BZn%5E%7B2%2B%7D%7Bdiluted%7D%5D)
= 0.0111 M
![[Zn^{2+}{concentrated}]](https://tex.z-dn.net/?f=%5BZn%5E%7B2%2B%7D%7Bconcentrated%7D%5D)
= 4.50 M
Now put all the given values in the above equation, we get:
Therefore, the cell emf for this cell is 0.077 V
