Unos rieles de acero de 15m de longitud son colocados un día en que la temperatura es de de 3C¿cual será el espacio mínimo que habrá que dejar entre ellos, para que lleguen justo a tocarse un día en que la temperatura sea de 48C?

the assestment will probley apele with cause and effect

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards