D.Radiant energy does not require a medium through which to travel.
Answer:
because otherwise the harmful Ultraviolet rays of the sun penetrates the Earth's surface and causes numerous diseases in humans like skin cancer, cataract etc.
1) The tension in the horizontal massless cable CD is, 446N
2) The vertical component of the force exerted by the pivot A on the aluminum pole 328.3N
3)The horizontal component of the force exerted by the pivot A on the aluminum pole is,446N
To find the answer, we need to know about the tension.
<h3>How to find the tension in the horizontal massless cable CD?</h3>
- To find the tension in horizontal cable CD ,we have to draw the free body diagram of the masses.
- Given that,
- In the free body diagram, let's balances all the vertical and horizontal forces to get the tension on CD.
<h3>How to find the vertical and horizontal components of the force exerted by the pivot A on the aluminum pole?</h3>
- The net force along vertical direction can be written as,
- The net force along the horizontal direction is,
Thus, we can conclude that, the tension in the horizontal massless cable CD and the horizontal component of force exerted by the pivot A on the aluminum pole are same and is equal to 466N, and the vertical component force exerted by the pivot A on the aluminum pole is 328.3N.
Learn more about the tension here:
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Answer:
20.65 m/s
Explanation:
You are gonna wanna use a calculator for this one
so we will write all the known variables:
h = 15.6 m
initial velocity (u) = 10.7 m/s
acceleration (a) = 10 m/s/s (gravity)
From the third equation of motion:
<em>v² - u² = 2ah</em>
<em>v² - (10.7)² = 2(10)(15.5)</em>
<em>v² - (10.7)² = 312</em>
<em>v² = 312 + 114.49</em>
<em>v² = 426.49</em>
v = 20.65 m/s
The momentum of a 5kg object that has a velocity of 1.2m/s is 6.0kgm/s.
<h3> MOMENTUM:</h3>
Momentum of a substance is the product of its mass and velocity. That is;
Momentum (p) = mass (m) × velocity (v)
According to this question, an object has a mass of 5kg and velocity of 1.2m/s. The momentum is calculated thus:
Momentum = 5kg × 1.2m/s
Momentum = 6kgm/s.
Therefore, the momentum of a 5kg object that has a velocity of 1.2m/s is 6.0kgm/s.
Learn more about momentum at: brainly.com/question/250648?referrer=searchResults