Answer:
![\begin{array}{l|l}\text{Speed}\; \mathrm{(m\cdot s^{-1})} & \text{Minimum Height\;(m)}\\\cline{1-2}\\[-1em] 2 & 0.204\\3&0.459\\4 & 0.815\\5 & 1.27 \\6 & 1.83\end{array}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Bl%7Cl%7D%5Ctext%7BSpeed%7D%5C%3B%20%5Cmathrm%7B%28m%5Ccdot%20s%5E%7B-1%7D%29%7D%20%26%20%5Ctext%7BMinimum%20Height%5C%3B%28m%29%7D%5C%5C%5Ccline%7B1-2%7D%5C%5C%5B-1em%5D%202%20%26%200.204%5C%5C3%260.459%5C%5C4%20%26%200.815%5C%5C5%20%26%201.27%20%5C%5C6%20%26%201.83%5Cend%7Barray%7D)
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Assumptions:
- The object is dropped in a free fall.
- There's no air resistance.
- The downward acceleration due to gravity is
Explanation:
Consider the "SUVAT" equation
,
where
is the final velocity,
is the initial velocity,
is the acceleration of the object, and
is the change in the object's position.
For example, if the bottle needs to achieve a speed of 
by the time it reaches the ground,
since the statement that the bottle is "dropped" implies a free fall.
.
Apply the previous equation to find the minimum height, :
.
Replace the value and apply the formula to find the minimum height required to reach different final speeds.
Answer:
0.2 A
Explanation:
Current: This is the rate of flow of charge in a circuit. The S.I unit of charge is Ampere (A).
Note: When resistors are connected in parallel, the total current is equal to the sum of the individual current in each resistor.
It = I1 + I2 + I3......................... Equation 1
Where,
It = Total current, I1 = current in the first resistor, I2 = current in the second resistor, I3 = current in the third resistor.
Given: It = 0.71 A, I1 = 0.27 A, I2 = 0.24 A.
Substitute into equation 1
0.71 = 0.27+0.24+I3
0.71 = 0.51+I3
I3 = 0.2 A.
Hence the current through the third resistor = 0.2 A
if i am correct the answer is d. because depending on how far a wavelength goes we see different colors.
To solve this problem we will start using the concepts related to the electric field, from there we will find the load exerted on the body. Through this load it will be possible to make a sum of forces in balance to find the load that a human supports. Finally with these values it will be possible to find the repulsive force. We will proceed as follows,
The electric field is
Here,
k = Coulomb's Constant
Q = Charge
R = Distance (At this case from the center of mass of the earth to the surface)
Rearranging to find the charge,
Replacing,
Since the electric field is directed towards the center of earth, the charge is negative.
PART A) Once the load is found we can proceed to apply the balance of Forces, for which the electrostatic force must be equivalent to the weight, this in order to satisfy the balance, therefore
Replacing,
Solving for q,
PART B) Finally using the given distance and the values of the found load we can find the repulsive Force, which is
PART C) The answer is no. According to the information found, we can conclude that traveling through an electric field is not viable because there is a repulsive force of great magnitude acting on the body.
The first one is actually 10 times as big as the second one.
Because of their places, the first one means 6000, and the second one means 600.
