In which of the following pairs do both numbers contain the same number of significant figures? check all that apply. check all that apply. 0.00012 s and 12000 s 11.0 m and 11.00 m 0.0250 m and 0.205 m 250.0 l and 2.5×10−2l

The correct answer is :A and C

Explanation:

According to the rule

1- Zeroes at the beginning of a number are never significant.

2- Zeroes at the end of a number are significant if there is a decimal point.

(a) 0.00012 s and 12000 s

0.00012 has 2 significant figure and 12000 has 2 significant figures

(b) 11.0 m and 11.00 m

11.0 has 3 significant figures and 11.00 has 4 significant figure.

(c)  0.0250 m and 0.205

0.0250 has 3 significant figure and 0.250 has 3 significant figures

(d) 250.0 L and 2.5×10−2L

250.0 has 4 significant figures and 2.5x10−2 has 2 sig figures.

So (a) and (c) pairs have same number of sig figures.

3.2x10^7

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.