1)In a chemical reaction the temperature rises from 60 degree celsius to 90 de

Question

1)In a chemical reaction the temperature rises from 60 degree celsius to 90 degree celsius.What is the temperature change measured in degree Kelvin

a)30

b)273

c)333

d)363

2)A simple pendulum is made by attaching a small mass to a string.The string is hung from the ceiling and the period of the pendulum is measured.If the masshanging on the string is tripled, by what factor will the period of pendulum change?

a)3

b)0.33

c)1

d)9

3) a 1.5 kg physics book is pushed across the floor at 6.5 m/s.Iff the coefficient of kinetic friction between the book and the floor is 0.30,how long will the book slide before it stops ?

a)0.66 s

b)1.3 s

c)1.7 s

d)2.2 s

Explanation / Answer

c)333

d)9

c)1.7 s

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