Astudent had a ball a screen and a torch in working condition he tried to form a shadow of the ball on the screen by placing l them at different positions. sometimes the shadow was not obtained. explain

There are three reasons

Explanation:

1. When the screen is placed far away from the ball than he/she cannot get shadow on the screen.

2. The beam of light from the torch is falling parallel to the screen on the ball due to which the ball is not able to obstruct the whole light from the torch and shadow is not obtained.

3. The torch is kept away from the ball. This makes the source of light far away hence the sufficient light is not reached to the ball.

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.