Una pieza cuadrada de hierro tiene un volumen total de 400 cm3. Después de aserrar la pieza por la mitad, se sometió a una temperatura más alta, cuyo aumento es equivalente a 30ºC. Sabiendo que el coeficiente 5〖x10〗^(-6) 〖°C〗^(-1) ¿Cuál será el volumen final de esta mitad de la pieza? ayuda enserio

On a cold day, when the air temperature is 0°c, you empty your lungs and take a deep breath, filling your lungs with 4.2 l of air. if you hold your breath until the temperature of the air in your lungs reaches 37°c, what is the volume of the air in your lungs at that point, assuming the pressure does not change?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false