In music a very soft sound called "pianississimo" (ppp) might have an intensity of about 10^−8w/m^2. a very loud sound called "fortississimo" (fff) might have an intensity of about 10^−2w/m^2. /0 is 10−12 w/m^2 for sound. a. convert the intensity of "pianississimo" to intensity level (units of db).b. convert the intensity of "fortississimo" to intensity level (units of db).

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

The two required components for a generator

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25º, b) el tiempo que el balón permanece en el aire.