Una varilla de longitud L con pivote en uno de sus extremos, se le aplica una fuerza F en el otro extremo. Para que el momento de fuerza tenga su máximo valor, el angulo entre la fuerza y la varilla deber ser:

a. <90°.
b. α=90°.
c. α=0°.
d. α = 180°.

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?

Four 5-gram blocks of metal are sitting out in the sun and absorb the same amount of heat energy. use the following specific heat capacity data to determine which block will increase its temperature the most.

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.