#3) A spaceship has a mass of 5.23 x10 kg is orbiting around Earth, which has a mass of
6.00 x1024 kg. If the spaceship is 2.30 x1012
meters from Earth, what is the force of gravity
acting on it?
A) 3.04 x 104N B) 5.93 x 106N
C) 9.10 x 10' N D) cannot be determined

P

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.