la masa sostenida en la mano es de 6 kg. Suponga que la masa del antebrazo y la mano juntos es de 8 kg y que su centro de gravedad (C. G.) está donde se indica en la figura. ¿Cuál es la magnitud de la fuerza muscular (FM)? (g = 10 m/s2). Los ángulos respecto al eje de las X, y las distancias en relación a la articulación del codo y las fuerzas son: FM 50°, 5 cm; CG 30°, 10 cm y el ángulo de la masa 20°, 35 cm. Alguien ayúdeme por favor, necesito la respuesta lo antes posible, daré 25 puntos

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.

Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm

The amount of work done is determined by 2 factors. describe an example of work (using the scientific definition) list the 2 factors that determine the amount of work done.