Supongamos que a su mamá se le rompió sus espejuelos para leer. El punto de acercamiento (near point) del ojo de su mamá se encuentra a 50 cm, pero para leer ella lo necesita a 25 cm. Calcule la distancia focal del cristalino de su mama cuando se pone los espejuelos. Muestre todos los cálculos

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9

Which of these metals are magnetic?