Consider the process for steam in a cylinder shown below. Suppose the change in the internal energy in this process is 24 kJ. Find the heat entering the system (in J).

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

the doppler effect is used by weather forecasters to measure 

moving clouds