Um tubo sonoro, aberto nas duas extremidades, tem comprimento de 40 cm. Em certo instante o ar dentro do cubo está vibrando em seu 4° harmônico. sendo 340 m/s a velocidade do som no ar, qual é a frequência do som emitido pelo tubo? a)425 Ghz

b)850 Hz

c)1,275 kHz

d)1,7 kHz

e)2125 Hz

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.