Dos fuerzas de 12 y 14 unidades actúan sobre un cuerpo formado entre si un ángulo de 80°. Calcular el valor de las fuerzas resultantes sobre el cuerpo.

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a. a piece of paper b. a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block

Select all the correct answers. which three statements about electromagnetic radiation are true?