# presman

Harvard University (MA), Physics, Physics

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A NASA astronaut hits a golf ball on the Moon, which quantities remain constant as the ball travels through the lunar vacuum?

A NASA astronaut hits a golf ball on the Moon. Which of the following quantities, if any, remain constant as the ball travels through the lunar vacuum...

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Suppose two quantities, A and B, have different dimensions. Determine which of the following arithmetic operations could be physically meaningful.

(a) A 1 B (b) B 2 A (c) A 2 B (d) A/B (e) AB

Provided the horizontal distance and the angle of elevation. Find out the height of the tree?

At a horizontal distance of 45 m from a tree, the angle
of elevation to the top of the tree is 26°. How tall is the
tree?
(a) 22 m
(b) 31 m ...

Mention some of the deadly diseases that cause death of children in developing countries.

Thousands of children have to suffer from deadly diseases in developing countries because of lack of vaccination. Please enlist some of the deadly dis...

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Lake effect snow happens when cold wind blows over a massive expansive of warm lake water. It picks up water vapors which freeze and falls as snow on ...

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(a) The Earth already bulges slightly at the equator, and is slightly flat at the poles. If more mass moved towards the equator, it would essentially...

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Switch off the phone and take out the battery as soon as possible. This should be your very immediate reaction. After that let the phone dry for a da...

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W = F x d x cosθ
W = (18 x 9.8) x 8.3 = 1057.42 Joules
W = μ x mg x d x cosθ
**W = 0.41 x 13 x 9.8 x 3.8 x cos27...