Answer:
Explanation:
The relationship between electric field strength and potential difference is:
where
E is the electric field strength
V is the potential difference
d is the distance between the plates
Here we have
V = 218 V
d = 1.29 cm = 0.0129 m
So, the electric field is
It is larger in plant cells than in animal cells
Battery based heaters use electric resistance heating, which uses a lot of current (electricity) to create the heat.
In order to calculate the time taken by the snowball to reach the highest point in its journey, we need to consider the variables along the y-direction.
Let us list out what we know from the question so that we can decide on the equation to be used.
We know that Initial Y Velocity = 8.4 m/s
Acceleration in the Y direction = -9.8 m/, since the acceleration due to gravity points in the downward direction.
Final Y Velocity = 0 because at the highest point in its path, an object comes to rest momentarily before falling down.
Time taken t = ?
From the list above, it is easy to see that the equation that best suits our purpose here is
Plugging in the numbers, we get 0 = 8.4 - (9.8)t
Solving for t, we get t = 0.857 s
Therefore, the snowball takes 0.86 seconds to reach its highest point.