A capilary tube in diameter is immersed in a beaker of mercury. The mercury level inside the tube is found to be 0.5 cm below the level of the reservoir. Detrtmine the contact qngle between mercury and glass​

it should be -8.6 cm hope this out

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

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

its a circle not a square that's simple silly.

explanation: