hhhh A rock is suspended from a scale that reads 20.0 N A beaker of water is rai

Question

hhhh A rock is suspended from a scale that reads 20.0 N A beaker of water is raised up so the rock is totally submerged in the water. The scale now reads 12.5 N. What is the density of the rock? In a section of horizontal pipe with a diameter of 3.00 cm the pressure is 5.21 kPa and water is flowing with a speed of 1.50 m/s. The pipe narrows to 2.50 cm. What is the pressure in the narrower region? A transverse periodic wave on a string with a linear density of0.200 k m is described by the following equation y - 0.08 sin (469t - 28.0x), what x and y are in meters and t is in second, What is the tension in the string?

Explanation / Answer

use the below relation to find the height.

density of water*g*h1 = density of oil*g*h2

1000*g*h1 = 950*g*6

then, h1 = 5.7 cm. the required height is

dh = 6 - 5.7 = 0.3 cm = 3 mm

option D is correct

gh = 10.52 - 6 =

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