?
If you have a heat engine with a hot reservoir of 515°C and a
cold reservoir of 190°C, what is the thermal efficiency of the
system?
63.1%
75.2%
52.1%
67.9%

no. dot product   =0 when vecs at right angles

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

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle