Un bobsleigh est lancé le long d'une piste glacée et étroite, en ligne droite, où les frottements sont négligeables. 1. Faire un bilan des interactions qui s'exercent sur le bobsleigh.
2. Faire un schéma représentant les forces qui s'exercent sur le bobsleigh.
Que peut-on dire de ces forces ?
3. En déduire la nature du mouvement du bobsleigh.​

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it