Answer:
The Correct Answer is "D"
Explanation:
For Detail of this answer Please see the attached file.
The graph to the right shows the change in Canada‘s harvest of Atlantic cod from 1950-2004 what year shows the clearest evidence
of a collapse of fishing stocks?
A.1965
B.1985
C.1995
D.2005
A.1965
B.1985
C.1995
D.2005
1 answer:
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To solve this problem we will apply the linear motion kinematic equations. First we will determine the time it takes for the camera to fall to the floor. Later with that time, we will calculate from the initial position when the balloon ascended.
Here
= Initial velocity
g= Acceleration due to gravity
t = time
Replacing with our values
Solving for the time,
Now with the previous position we have that the balloon has ascended around to,
Answer:
μ₁ = 0.1048
μ₂ = 0.1375
Explanation:
Using static equation can find in both point the moment and the forces so:
∑ M = F *d , ∑ F = 0
∑ M A = 0
N₁ * 3 - 200 * 9.81 * 1.5 = 0
N₁ = 981
∑ M y = 0
N₂ + 300 * ³/₅ - 981 - 20 * 9.81 = 0
N₂ = 997.2 N
∑ M C = 0
F₁ * 1.75 - 300 * ⁴/₅ * 0.75 = 0
F₁ = 102.86
∑ M B = 0
300 * ⁴/₅ * 1 - F₂ * 1.75 = 0
F₂ = 137.14 N
The Force F1 and F2 related the coefficients of static friction
F₁ = μ₁ * N₁ ⇒ 102.86 N = μ₁ * 981 ⇒ μ₁ = 0.1048
F₂= μ₂ * N₂ ⇒ 137.14 N = μ₂ * 997 ⇒ μ₂ = 0.1375
