March 29, 2015

Homework Help: Physics

Posted by Godrick on Wednesday, October 17, 2012 at 6:49am.

HI! :( Im sorry to bother you guys but I need help on only these three questions. I'm not trying to cheat but these three are really confusing. This is the first time I've ever asked for help on the internet haha. Please dont be upset I promise this is the only time.

13. You measure the mass of a 0.500 kg (500 g) standard on your balance four times. The following measurements result: 498 g, 501 g, 499 g, 500 g. Which of the following best describes your balance? (Points : 3)
not precise and not accurate
not precise but accurate
precise and accurate
precise but not accurate

14. If a box has a length of 10.0 cm, a width of 15 cm, and a height of 5.0 cm, then what is its volume in m3?
(Points : 3)
7.5 104

7.5 103

7.5 102

750 102

15. What is the difference between 3.150 m and 2.006 m with the correct number of significant figures?
(Points : 3)
1 m

1.1 m

1.14 m

1.144 m

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