En una Mezcla: 1. Las sustancias obtenidas conservan sus propiedades originales
2. Aparecen nuevas sustancias
3. Las sustancias iniciales son en cantidades fijas
4. Se separan solo por procedimientos químicos

Answer as quick as ! kate is working on a project in her tech education class. she plans to assemble a fan motor. which form of energy does the motor convert most of its electric energy into? a. light energyb. motion energyc. sound energyd. thermal energy

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

How do we measure or think of speed in the united states?