The combination of two or more atoms, from the same or different elements, creates a(

Could someone . i have tried to solve myself but my calculation is off

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?