MCAT UHS Past Paper

Q: In elastic collision, when a massive body collides with light body at conditions m1 >> m2 and v2 = 0 ms-1, then the change in velocity will be written as:

(a) :  v1’ ≈ − v1 ; v2’ ≈ v1
(b) :   v1’ ≈ v1 ; v2’ ≈ 0
(c) :   v1’ ≈ v1 ; v2’ ≈ 2v1
(d) :   v1’ ≈ − v1 ; v2’ ≈ 0
Answer:   v1’ ≈ v1 ; v2’ ≈ 2v1
Explanation:  

Q: Boiling point constants help us to determine

(a) :  Molar masses
(b) :  Volumes
(c) :   Pressures
(d) :   Masses
Answer:  Molar masses
Explanation:  

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