Calcula la fuerza ascendente que experimenta un cuerpo de madera, de densidad 0.6 g/mL, de 1dm3 de volumen cuando lo sumergimos en agua (d= 1g/cm3).

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

i will answer your question if you answer mine