Con ayuda de la tabla de unidades físicas, resuelve los siguientes ejercicios de conversión de unidades.

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

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

Aspacecraft that renters the earth’s atmosphere drastically slows down. the amount of kinetic energy the spacecraft has as it reenters the earths atmosphere