Três resistores ôhmicos, r1 = 2ohm, r2 = 4ohm e r3= 4ohm estão associados em paralelo. quando
ligados a um gerador ideal, a corrente elétrica total no
circuito é igual a 12 a.
a corrente elétrica e a diferença de potencial elétrico
no resistor r1
são iguais a?

1 a

2 b

3 b

4 d

5 d

6 d

explanation:

powerful computers now, not then

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.