Un pedazo de hielo el hielo s a -10°C se encuentra en un recipiente cerrado de material aislante sin aire y se enciende un bombillo adentro del recipiente a cierta distancia del hielo, se puede afirmar que la temperatura del hielo (A) aumenta, porque se transfiere calor por radiación (B) aumenta, porque se transfiere calor por convección (C) aumenta, porque se transfiere calor por conducción(contacto) (D) no cambia, porque no hay contacto entre el bombillo y el hielo.

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

If a balloon is taken outside on a very cold day, what will occur?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)