<span>The top benefit of pesticides is their effectiveness against pests that would otherwise decimate crops large and small. </span>
Force = mass × accelaration
Force = 0.25Kg × 196 m/s²
Force = 49 Newtons
Answer:
Explanation:
v = Speed of electron = 
(generally the order of magnitude is 6)
m = Mass of electron = 
Work done would be done by
The work required to stop the electron is
V = f x lamda
Wave speed = frequency x wavelength
2x1 = 2 so wave speed = 2m/s
Let me know if you have any questions
Answer:
The coconut hit the ground after 1.28 s
Explanation:
Velocity: This can be defined as the rate of change of displacement. Or it is defined as speed in a specified direction. Velocity is a vector quantity. The S.I unit of velocity is m/s.
Using the equation of motion,
S = ut + 1/2gt²....................................... Equation 1
Where S = distance, u = initial velocity, t = time, g = acceleration due to gravity
<em>Given: s= 8 m, u = 0 m/s ( because it was drop from a height), </em>
<em>Constant : g = +9.8 m/s²</em>
<em>Substituting these values into equation 1,</em>
<em>8 = 0×t + 1/2(9.8×t²)</em>
<em>8 = 4.9t²</em>
<em>t² = 8/4.9</em>
<em>t = √1.63</em>
<em>t = 1.276 s</em>
t = 1.28 s
Therefore the coconut hit the ground after 1.28 s
