QUESTION 6 The ratio of maximum load to the original cross-sectional area is cal

Question

QUESTION 6

The ratio of maximum load to the original cross-sectional area is called tensile strength of a material

True

False

1 points   

QUESTION 7

SI Units of stress are Newton / meter (N / m)

True

False

1 points   

QUESTION 8

SI units of the intensity of a sound wave are Watts/meter2

True

False

1 points   

QUESTION 9

Pressure is defined as perpendicular force per unit cross-sectional area.

True

False

1 points   

QUESTION 10

Power needed to raise a 1-kg mass to a height of 1m in 1 sec is

9.8 Watts

16.1 J

8.9 Js

7.8 J

1 points   

QUESTION 11

Equal-loudness level is measured in __________

phons

Newtons

dB

Watts

9.8 Watts

16.1 J

8.9 Js

7.8 J

Explanation / Answer

6) True

7) False . It is N/m2

8) True

9) True

10) P = W/1 = mgh/ t = 1*9.8*1/1 = 9.8 J

11)Loudness is measured in dB

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