Trisha is learning how to do a first-aid procedure known as CPR. She is practicing using a mannequin, or a model of the top half of the human body.

What is one limitation of a CPR mannequin?
A.
It is not possible to press down on the chest of a CPR mannequin.
B.
It is not possible to breathe into the mouth a CPR mannequin.
C.
It is not possible to check for a real pulse on a CPR mannequin.
D.
It is not possible to lay a CPR mannequin on the floor.

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)