Answer quick brainliest for the best answers

1. which color is absorbed and which is reflected by the leaves of most plants?

2. what increases the ability to see at night?

3. what is the best description of the constructive interference of light?

4. what is the best description of the destructive interference of light?

5. which part of the electromagnetic spectrum is divided into seven ranges of wavelengths and is the part visible to the human eye?

6. which statement is true about the part of the electromagnetic spectrum that human eyes can detect?

7. compare radio waves and microwaves.

8. what enables humans to "see" light in the infrared range of the electromagnetic spectrum?

9. most objects emit infrared energy. how do humans recognize this?

10. exposure to what type of radiant energy is sensed by human skin as warmth?

11. what is the relationship between an object's density and its index of refraction?

12.what separates white light into the colors of the visible spectrum?

13. how does a prism produce the colors of the rainbow from white light?

14. in a concave mirror, if an object is located beyond the center of curvature, what is the best description of the image formed?

15. in a concave mirror, if an object is located between the center of curvature and the focal point, what is the best way to describe the image formed?

16. spectrum is latin for which word?

17. reflexio is the latin root for which word?

1. Absorbs blue, violet and red spectrums, reflects green rays.

2. The coverage of the green spectrum, to see more green tones.

3. Electromagnetic waves such as light do not interfere with each other’s path, it is one of the basic rules.

4. See 3.

5. Between red and violet.

6. Human eyes adapted to see in the light, as we don’t live underwater and have no need to see at night.

7. The only thing that changes between them is the frequency, both are electromagnetic.

8. Heat.

9. Heat.

10. All electromagnetic.

11. The more dense, the less it refracts.

12. Going through different densities.

13. Refraction.

14. Real, inverted and smaller. Between F and C.

15. Real, inverted and bigger. Before C.

16. Range of colors dispersed by white light. First used for the rainbow.

17. Reflection.

That was long, hope you get it!

the velocity you are looking for is made up of two parts: horizontally velocity, vh, and its vertical velocity, vv. the actual velocity of the ball will be these two parts added together, and because velocity is a vector then they will need to be added vectorially.  

neglecting air resistance etc etc.,  

the horizontal velocity component will be constant (because there is no accelerating force in the horizontal direction.  

vh = 8 ms-1  

the vertical velocity component has an accelerating force: 'g'.  

using v = u +at where a = g = 9.81 ms-2.  

the vertical component of velocity, vv = 0 + gt = vv =9.81 x 2  

vv = 19.62 ms-1 . the zero appears because the virtical component of velocity at time t=0 is zero. remember, the ball was thrown horizontally.  

how fast it will be moving (it actual path (being a parabola )) will be the vector sum of these two.  

adding vectorally gives: -  

v = sqr root (8^2 + 19.62^2) = sqr root(64+384.9) = 21.18 or 21.2 ms-1

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle