If the distance between two objects is decreased to - of the original 10
distance, how will it change the force of attraction between them?
O A The new force will be 100 times more than the original.
OB. The new force will be 20 times more than the original.
1
The new force will be - of the original.
20
OD
1
The new force will be -- of the original.
100
О Е.
1
The new force will be - of the original,
10

A110-pound person pulls herself up 4.0 feet. this took her 2.5 seconds. how much power was developed? 0.13 hp 0.32 hp 2.0 hp 3.1 hp

If steel is more dense that lake water, why can a boat float

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.