Ahydrometer is a device used to measure the density of a liquid. it is a cylindrical tube weighted at one end, so that it floats with the heavier end downward. the tube is contained inside a large "medicine dropper," into which the liquid is drawn using the squeeze bulb (see the drawing). for use with your car, marks are put on the tube so that the level at which it floats indicates whether the liquid is battery acid (more dense) or antifreeze (less dense). the hydrometer has a weight of w = 7.56 × 10-2 n and a cross-sectional area of a = 7.79 × 10-5 m2. how far from the bottom of the tube should the mark be put that denotes (a) battery acid (ρ = 1280 kg/m3) and (b) antifreeze (ρ = 1073 kg/m3)?

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft

a. vertically

explanation:

i tried it and took the test

if im wrong then we have different tests