¿Cuántos protones, neutrones y electrones hay en cada uno de los siguientes átomos? Lithium (Li)
p =
Magnesium (Mg)
p =
Carbon (C)
p =
Oxygen (0 )
p =
Chlorine (Cl)
p = ​
n =​
n =
n =
n =​
n =
e = ​
e = ​
e = ​
e = ​
e =

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.