Answer:
a. Use of toxic chemicals in agriculture and manufacturing run-off
Explanation:
it is the only activity listed the rest are possible impacts
<span>The scientist who discovered that an electric current could be
produced by moving a wire through a magnetic field is Thomas Alva Edison</span>
Answer:
132.64m/s
Explanation:
Averagevelocity= distance/time
From the question, the distance d = 825m
time t = 6.22 secs
Using the above formula
We have
average velocity = 825/6.22
= 132.64m/s
Answer:
32.925 m.
Explanation:
The formula of centripetal acceleration is
a = v²/r ............... Equation 1
Where a = centripetal acceleration, v = linear velocity, r = radius.
make r the subject of the equation.
r = a/v²............. Equation 2
Given: v = 22 m/s,
a = 1.5 times free fall acceleration
Note: Free fall = 9.8 m/s²
Therefore, a = 1.5×9.8 = 14.7 m/s²
Substitute into equation 2
r = 22²/14.7
r = 484/14.7
r = 32.925 m.
Hence the radius of the turn = 32.925 m.