b. sunlight
Answer
a. wind
Explanation
Ocean waves are coursed by wind which transfers its energy into the water. This forms big waves that can travel a long distance. The size of the wave depend on the speed of wind, the area covered and the duration of the wind.
Answer:
Wind
Explanation:
The wind velocity can be calculated by vector subtraction of the plane's velocity relative to the ground (the observed travel path) and the plane's velocity relative to still air. This involves converting the velocities to their component forms along the east-west and north-south axes, performing the subtraction, and then converting back to a magnitude and direction.
This problem can be solved through the use of vector addition and subtraction. Let's denote the velocity of the plane as Vp, the velocity of the wind as Vw, and the resultant velocity (or the actual observed travel path) as Vr. These velocities are vectors, which mean they have both magnitude and direction.
Given that the plane had an airspeed of 185 km/h due south, which can be represented as Vp=185 km/h south. However, the actual path covered was Vr=135 km/h, 75° south of east. We can find Vw through the equation Vr = Vp + Vw, rearranged as Vw = Vr - Vp.
Following this calculation, we then need to convert these vector magnitudes and directions into components along the north-south and east-west axes. We then subtract corresponding components to find the wind velocity in terms of its north-south and east-west components, before finally converting these back into a magnitude and direction using Pythagoras' theorem and trigonometric functions.
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