Trên 2 đỉnh b, c của tam giác abc, (ab=4cm, ac=3cm, bc=5cm) người ta đặt hai điện tích điểm qa=16.10^-8 và qc=-12.10^-8c. Vactẻ cường độ điện trường do hệ hai điẹn tích trên gây ra tại b có độ lớn bắng bao nhiêu

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

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