Question

2) The critical commonality of all science branches are .

A)non of the above
B)based on observation/data acquisition to understand the nature
C)repeating experiments are not necessary if we can show a result once.
D)based on designing correct experiments .
E) based on a known theory

6)The number 7.5 * 10^{-4} is ?

7)Solve the following equation: 6/x = 10/9 ?

Answer 1

(2)

The critical commonality of all science branches are based on observation/data acquisition to understand the nature.

For all braches of sciences, a new hypothesis is required and experiments should support the hypothersis by doing

experiments sevaral times.

Correct option is (B)

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(6) 7.5 * 10^{-4} has two significant digits, in scientific notation.

7.5 * 10^{-4} = 0.00075

(7 )

6/x = 10/9

Rearrange for x

x = 6*9 / 10 = 5.4