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What is the relationship between wind and ocean waves?
A) Wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.
B) Wind moving at higher speeds will transfer energy over a larger part of the ocean water, resulting in waves with a shorter wavelength.
C) Winds moving at higher speeds with cause water to move forward at faster rates, causing larger ocean waves.
D) Winds moving at higher speeds will affect deeper water, resulting in waves that move at a faster rate.
What is the relationship between wind and ocean waves?
A) Wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.
B) Wind moving at higher speeds will transfer energy over a larger part of the ocean water, resulting in waves with a shorter wavelength.
C) Winds moving at higher speeds with cause water to move forward at faster rates, causing larger ocean waves.
D) Winds moving at higher speeds will affect deeper water, resulting in waves that move at a faster rate.
2 answers:
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Answer:
W=561.41 J
Explanation:
Given that
m = 51 kg
μk = 0.12
θ = 36.9∘
Lets F is the force applied by man
Given that block is moving at constant speed it mans that acceleration is zero.
Horizontal force = F cos θ
Vertical force = F sinθ
Friction force Fr= μk N
N + F sinθ = m g
N = m g - F sinθ
Fr = μk (m g - F sinθ)
For equilibrium
F cos θ = μk (m g - F sinθ)
F ( cos θ +μk sinθ) = μk (m g
Now by putting the values
F ( cos 36.9∘ + 0.12 x sin36.9∘)=0.12 x 51 x 10
F= 70.2 N
We know that Work
W= F cos θ .d
W= 70.2 x cos 36.9∘ x 10
W=561.41 J
Answer:
Explanation:
The final velocity is given by the following kinematic equation:
Here, is the initial velocity, a is the body's acceleration and t is the motion time. We have to convert the time to seconds:
Now, we calculate the final velocity: