Cuando un tubo metálico con una longitud de 50 m se calienta desde 10°C a 40°C, se alarga por 2.85 cm. Calcular: a) El coeficiente de dilatación lineal, y b) ¿De qué tipo de metal estáhecho el tubo?

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.

What is the specific heat of wood ?