Answer:
3.042 m/s
Explanation:
To solve this exercise it is necessary to use the Work equation and the conservation of kinetic energy in the Ice skater.
According to the description of the problem, all the work is done from north to south due to the wind direction. In this way, finding the force in this component we have,
Through the kinetic energy equations we have to
Re-arrange for
Therefore te speed after gliding 100m in this wind is 3.042m/s
Answer:
the answer is A Cycles of solar flares and prominences heat and cool the layers below the sun’s surface
Explanation:
i took the quiz
Answer:the frequency decreases and the wavelength increases
Explanation:
The frequency decreases and the wavelength increases
Answer:
μ = tan θ
Explanation:
For this exercise let's use the translational equilibrium condition.
Let's set a datum with the x axis parallel to the plane and the y axis perpendicular to the plane.
Let's break down the weight of the block
sin θ = Wₓ / W
cos θ = W_y / W
Wₓ = W sin θ
W_y = W cos θ
The acrobat is vertically so his weight decomposition is
sin θ = = wₐₓ / wₐ
cos θ = wₐ_y / wₐ
wₐₓ = wₐ sin θ
wₐ_y = wₐ cos θ
let's write the equilibrium equations
Y axis
N- W_y - wₐ_y = 0
N = W cos θ + wₐ cos θ
X axis
Wₓ + wₐ_x - fr = 0
fr = W sin θ + wₐ sin θ
the friction force has the formula
fr = μ N
fr = μ (W cos θ + wₐ cos θ)
we substitute
μ (Mg cos θ + mg cos θ) = Mgsin θ + mg sin θ
μ =
μ = tan θ
this is the minimum value of the coefficient of static friction for which the system is in equilibrium.