Questions by Tharanga

Questions by Tharanga

Question 9 Unsaved A 680-Hz sound wave travels at 340 m/s in air, with a wavelength of 0.5 m. 5 m. 50 m. 500 m. none of the above

asked May 17, 2019

2 answers

3 votes

189k views

last month you swim the 50m freestyle in 28.38 seconds. Today you swim it in 27.33 seconds what is your percent of change round to the nearest tenth of a percent if necessary

asked Feb 23, 2019

1 answer

4 votes

189k views

Explain the characteristics of a triangle.

asked Jan 8, 2019

1 answer

1 vote

178k views

Which of the following can reduce biodiversity within a natural environment? A. Giant kangaroo rats enrich the soil for plants with their piles of grass clippings in the California grasslands. B. Grasslands

asked Oct 26, 2018

2 answers

5 votes

89.1k views

The period of history that includes the rise of european nation-states and colonial empires is traditionally referred to as

asked Aug 4, 2018

1 answer

5 votes

228k views

Which is the best strategy for avoiding long-term stress? Develop a fun hobby and spend time on it every day. Manage time effectively and include time to relax. Spend less time on activites that you find

asked Mar 17, 2018

2 answers

2 votes

10.6k views

What factors in an experiment are observed, measured, and recorded? A.) independent variables B.) constants C.) hypothesis D.) dependent variables

asked Oct 2, 2017

2 answers

5 votes

142k views

If x/5 = 4/15 value of x ?

asked Jan 12, 2017

2 answers

4 votes

40.9k views

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