If the mass of the moon is kg and its radius is m, what is the gravitational force on an astronaut on the surface of the moon if his mass is 200 kg?

b) 10 minutes

girls stopped for 10 minutes.

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.