No café de manhã de Débora são servidas duas jarras contendo massas iguais de leite , sendo una de leite gelado e a outra de leite quente Débora afirma que a jarra com leite gelado tem menos calor que a jarra com leite quente. ela diz também que a jarra com leite quente tem maior energia interna que a jarra com leite gelado. as afirmações de Débora estão corretas?

Yes  

Explanation:

The jar with cold milk is less hot than the jar with hot milk. The temperature of the milk is a measure of its "hotness".

You must add heat to cold milk to make it hot. The jug of hot milk has more internal energy than the jug of cold milk.

answer: i don't know the answer good luck

explanation:

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.