An astronaut drops a rock on the surface of an asteroid. the rock is released from rest at a height of 0.86 m above the ground, and hits the ground 1.37 s later. part a) what is the acceleration due to gravity on this asteroid?

Calculate the minimum energy required to remove one proton from the nucleus 126c. this is called the proton-removal energy. (hint: find the difference between the mass of a 126c nucleus and the mass of a proton plus the mass of the nucleus formed when a proton is removed from 126c.) express your answer with the appropriate units. emin e m i n = nothing nothing request answer part b how does the proton-removal energy for 126c compare to the binding energy per nucleon for 126c, calculated using eb=(zmh+nmn−azm)c2?