You are the school nurse decide which students are most at risk for health problems. look at these four cases. which person seems most likely to abuse drugs because of peer pressure? everyone in margene's family smokes. she has decided not to start. her best friends are also committed to abstaining from tobacco use. jacob plays basketball and has to be the best player on the team. he practices all the time and eats a diet high in protein, carbohydrates, and vitamins. rhonda lives in a housing project. her parents work hard, and the whole family checks on her social life regularly to make sure she studies and stays active. ramon is outgoing and likes to give parties at his house. he's easygoing, and he likes the company because his parents are away a lot.

What are the phases shown in a and d called?

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!

What are igneous intrusions and extrusions