Un auto que parte del reposo acelera en línea recta con una tasa constante de 3 m/s² durante 8,0 s. ¿Qué velocidad tendrá a los 8,0 s (en m/s)?

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.