Un objeto de 2cm de altura se coloca 3cm delante de una lente convergente cuya distancia focal es de 12cm. Dibuje el diagrama de los rayos el lente y la imagen y determine la altura de la imagen.

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?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Could someone . i have tried to solve myself but my calculation is off