The trap-jaw ant can snap its mandibles shut in as little as 1.3 10-4 s. in order to shut, both mandibles rotate through a 90° angle. what is the average angular velocity of one of the mandibles of the trap-jaw ant when the mandibles snap shut in 2.20 10-4 s?

Answer

given,

Time,t = 1.3 x 10⁻⁴ s

angle of rotation = 90° =

Average angular velocity of the mandible

        ω = 1.21 x 10⁴ rad/s

average angular velocity is equal to 1.21 x 10⁴ rad/s

if the time given is = 2.20 x 10⁻⁴ s

        ω = 7.14 x 10³ rad/s

average angular velocity is equal to 7.14 x 10³ rad/s

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.

god i hope this !