Answer:
specifically 30º west of the north
Explanation:
This exercise can be solved using the composition of vectors, let's call the speed of the river that goes east (v₁ = 8 mi / h) to the speed of the boat (v₂ = 16 mi / h) and the desired speed from south to north (v₃ =?). Look at the attachment to be clear about the vectors
Let's use the Pythagorean triangle
v₃² = v₁² + v₂²
Let's calculate v₂
v₂² = v₃² - v₁²
v₂ = √ (16² - 8²)
v₂ = 13.86 mi / h
To find the angle we use trigonometry
sin θ = v1 / v3
θ = sin⁻¹ (v1 / v3)
θ = sin⁻¹ (8/16)
θ = 30º
The boat must be pointed at 30º with respect to the south-north direction, specifically 30º west of the north
Hi pupil Here's your answer ::::
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The sun Doesnt rotates as we know all . But it rotates with the wjole our Milky Way Galaxy. This movement is so slow that we cant even recognise that we are shifted.
This we know because we all had studied about the solar system and space.
By this study we can say that Sun Rotates.
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Hope this helps ......
At the top of the noble gases<span> is little helium (He), with a shell </span>that<span> is full with only two electrons. The fact </span>that<span> their outer shells are full means they are </span>quite<span> happy and don't need to react with other elements. In fact, they rarely combine with other elements. </span>That non-reactivity<span> is why they are called </span>inert<span>.</span>
IS any one going to answer this I need the answer also
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Answer:
10seconds
Explanation:
use the formula a=v final_v inital/time