Answer with Explanation:
We are given that
Initial velocity,u=4.5 m/s
Time=t =0.5 s
Final velocity=v=0m/s
We have to find the deceleration and estimate the force exerted by wall on you.
We know that
Acceleration=
Using the formula
Acceleration=
deceleration=a=
We know that
Force =ma
Using the formula and suppose mass of my body=m=40 kg
The force exerted by wall on you
Force=
Answer:
This is an example of Learned preferences.
Explanation:
Alaskan natives are divided into five major groups viz: aleuts, southern eskimos, northern eskimos, interior indians and coastal indians. Although the five groups all have similar ethnic similarities, they occupy different geographical locations in Alaska. The alaska natives have overtime had to adapt to certain conditions largely because of their environment.
Answer:
4V
Explanation:
First, we calculate the total resistance to the given battery cell of emf 5V. The total resistance is the sum of all the resistance in the cell i.e.
Total resistance = 2Ω + 8Ω = 10Ω
Using ohms law equation to calculate the current passing through the battery cell:
V = IR
Where; V = voltage, I = current, R = resistance
5V = I × 10Ω
I = 5/10
I = 0.5A
Terminal voltage is calculated by the us of the following equation:
V=emf−IR
Where; R is internal resistance
V = 5 - (0.5 × 2)
V = 5 - 1
V = 4V
Therefore, the potential difference across the terminals of the battery cell is 4V
<span>✡ Answers:
Good
- </span><span>The reason that people and animals can walk. Because of friction we are able to walk one foot to the other.
- Prevents accidents, like being able to slam on a cars break and sliding endlessly.
Bad:
- When trying to go faster, friction can prevent that. In a car, or even trying to roller skate.
- It will damage the object that is sliding. Weather its skinning your knee of busting a tire. </span><span><span>✡</span>
</span>
✡Hope this helps<span>✡
</span>
solution
In This question we have given ,
Charge on each ball=
force of repulsion between balls is
Let distance between ball be x
We know by Coulombs law,
..............(1)
here,
Put values of k and charges in equation 1
therefore distance between two given charges is =.701m