Question # 1

According to Archimedes principle the density of a substance is determined by using formula

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D = w1/w2 + w1 x p

D = w1w2/w2- w1 x p

D = w1/w2 - w1 x p

D = w1w2/w2- w1 x p

According to hook's law stress is directly proportional to :

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Area

Volume

Strain

Force

If K = 150 N/m and elasticity is 0.20 m than:

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F = 30N

F= =31N

F = 32N

F = 29N

Earth revolves around the:

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Moon

Sun

Glaxy

None

Prefix naming as Giga has a symbol.

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M

G

m

g

To find x component of force 'F' we use formul:

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F Sin 𝜽

F Cos 𝜽

F tan 𝜽

F/F1

A force of 10 N is making and angle of 30^owith the horizontal. Its horizontal component will bw:

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4 N

5 N

7 N

8.7 N

Kilowatt - hour is unit of _____________

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Power

Energy

Work

K.e

GPS system consists of earth satellites:

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4

20

24

30

If the force of 25 N is acting along the string to balance the weight then tension in string is

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25 N

50 N

Zero

None

Crocus flower open when the temperature is:

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23 ^oC

26^oC

29^oC

32^oC

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

The pressure of liquid is given by

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pg V

pg A

pgh

pg

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