Un niño empuja una carreta con su perro dentro. La masa del perro y la carreta juntos es de 45 kg. La carreta
acelera a 0.85 m/s2
. ¿Cuál es la fuerza ejercida por el niño?

Two identical 82 mg dust particles very far apart (pee 0) are moving directly toward each other at a speed of 3698 m/s. the charge on each is-719 ? c. determine how close they will get to each other. let k = 9x109 n-m2/c2 & ignore gravity.

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?