The diagram shows a cross between a tall plant and a short plant each row shows a possible generation what can you conclude about the trait for short size?
a. it has two alleles for tall height (TT)
b. it has only one alleles for tall height (Tt)
c. it has two alleles for short height(tt)
d. it has either one o two alleles for tall height (TT or Tt)

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Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Bahan yang digunakan mencegah terjadinya polarisasi pada batu baterai a. larutan h2so4b. mncl2 dan serbuk karbonc. pbso4d. nh4cl