Why are nylon ropes used in rock climbing?
a.
nylon ropes are very stiff and therefore shorten the period of time over which a climber's fall is broken.
c.
there is no physical reason for the nylon material, it is just cheaper.
b.
nylon ropes can easily stretch and therefore extends the period of time over which a climber's fall is broken.
d.
none of the above.

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive