Answer:

Explanation:
From the question we are told that:
Weight 
Mass of Weight 

Generally the acceleration due to gravity on the Moon is one-sixth that on Earth.
Therefore
The equation for Weight on Moon is given as




. Your net force will be the crate's weight multiplied 2. and force in the x-direction will be 500N. You can then solve the equation for the friction force.
<span>wavelength of an electron l = h/p = 8.7 x 10^-11
h --> Planck's Constant
m --> Momentum
Wavelength l = h/p = h/mv = > v = h/(m*l)
From the given values,
m = 9.1 x 10^-31 kg
l = 8.7 x 10^-11 m
h = 6.626x10^-34 Js
v = 6.626x10^-34/ ((9.1 x 10^-31)*(8.7 x 10^-11))
The velocity of electron v = 8.37x10^6 m/s</span>
(a) The distance travelled by the hiker is 7.16 km
(b) If the hiker desires to return to his starting point, he should move at 201.71° with respect to east.
Form a right angled triangle with the distance between initial and final points as hypotenuse. The adjacent side will be the total distance travelled on x-direction and the opposite side will be the total distance travelled in y-direction.
Adjacent side =
-
= 3.05 - ( - 3.6 )
Adjacent side = 6.65 km
Opposite side =
-
= 5.9 - 3.25
Opposite side = 2.65 km
According to Pythagoras theorem,
=
+ 
=
+ 
Hypotenuse = √ ( 7.02 + 44.22 )
Hypotenuse = 7.16 km
sin θ = Opposite side / Hypotenuse
sin θ = 2.65 / 7.16
θ =
( 0.37 )
θ = 21.71°
This is the angle in which the hiker travelled from initial to final direction. The angle in which the hiker should travel to return to initial point with respect to east is
θ = 21.71° + 180°
θ = 201.71°
Therefore,
(a) The distance travelled by the hiker is 7.16 km
(b) If the hiker desires to return to his starting point, he should move at 201.71° with respect to east.
To know more about Pythagoras theorem
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