A plastic block of dimensions 2cm * 3 cm * 4 cm has a mass of 30 g. What is its density? a)0.8 g/cm 3 b)1.2 g/cm 3 c)1.25 g/cm 3 d)1.6 g/cm 3.

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Presentation transcript:

A plastic block of dimensions 2cm * 3 cm * 4 cm has a mass of 30 g. What is its density? a)0.8 g/cm 3 b)1.2 g/cm 3 c)1.25 g/cm 3 d)1.6 g/cm 3

Substance A has a density of 3 g/cm 3 and substance B has a density of 4 g/cm 3. In order to obtain equal masses of these two substances, the ratio of the volume of A to the volume of B will be: a)1:3 b)4:3 c)3:4 d)1:4

A liquid has a specific gravity of What is its density? a)357 k g/m 3 b)643 kg/m 3 c)1000 kg/m 3 d)3570 kg/m 3

A person weighing 900 N is standing on snowshoes. Each snowshoe has an area of 2500 cm 2. What is the pressure on the snow? a)0.18 N/m 2 b)0.36 N/m 2 c)1800 N/m 2 d)3600 N/m 2

What is the absolute pressure at a location 15 m below the surface of the sea? (The density of seawater is 1.03 * 10 3 kg/m 3 ) a)1.01 * 10 5 N/m 2 b)1.51 * 10 5 N/m 2 c)2.48 * 10 5 N/m 2 d)2.52 * 10 5 N/m 2

What is the gauge pressure if the absolute pressure is 300 kPa? a)97 kPa b)101 kPa c)199 kPa d)300 kPa

You are originally 1 m below the surface of a pool. If you dive to 2 m below the surface, what happens to the absolute pressure on you? a)it quadruples b)it more than doubles c)it doubles d)it less than doubles

You are originally 1 m below the surface of a pool. If you dive to 3 m below the surface, what happens to the additional pressure (in excess of atmospheric pressure) on you? a)increases by a factor of 9 b)more than triples c)triples d)less than triples