just give me the letter answer plz Atmospheric pressure is about 1 times 105 Pa.

Question

just give me the letter answer plz

Atmospheric pressure is about 1 times 105 Pa. How large a force does the air in a room exert on the inside of a window that is 40 cm times 80 cm? 1.0 times 104 N 3.2 times 104 N 4.8 times 103 N 9.6 times 103 N 1.8 times 102 N It is measured that 250 cm3 of fluid flows out of a tube whose inner diameter is 7 mm in a time of 41 s. What is the average velocity of the fluid in the tube? 15.8 m.s 1.38 m/s 3.60 m/s 0.158 m/s 0.36 m/s The density of gold is 19.30 g/cm3 at 20 degree C, and the coefficient of linear expansion is 14.3 times 10-6 C-1, What is the density of gold at 90 degree C? 18.24 g/cm 19.36 g/cm3 20.19 g/cm3 19.24 g/cm3 1 .30 g/cm3 How much heat is required to heat 250 cm3 of water from 20 degree C to 35 degree C? [For water, c =1 cal/g C] 3750 cal 5730 cal 37.50 cal 57.30 cal 7500 cal Find the rms speed of a Nitrogen molecule (M = 28/kg/kmol) in air at 0 degree C [NA = 6.02 times 1026 kmol-1 and k = 1.38 times 10-23 J/K] 490 m/s 350 m/s 140 m/s 670 m/s 930 m/s

Explanation / Answer

Answers :

1. b

2. d

3. d

4.a

5.a

Best of luck....

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