Supón que un sistema pasa de un estado a otro, intercambiando energía con su vecindad. Calcula la variación de energía interna del sistema en los siguientes casos: a. El sistema absorbe 100 cal y realiza un trabajo de 200 J. b. El sistema absorbe 100 cal y sobre él se realiza un trabajo de 200 J. c. El sistema libera 100 cal de calor a la vecindad (alrededor), y sobre él se realiza un trabajo de 200 J.

The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet of deuterium and tritium fuel of diameter 1.8 mm. (a) determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of 550 w. the pellet has an absorptivity 0.3 and emissivity 0.8.

Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.