Questions by Jan Berktold

Questions by Jan Berktold

Determine the energy in ev of a photon when electron transit from third level to the first level energy of hydrogen atom * A) 12 ev B) O 1.2 ev C) 0.12 ev

asked Oct 28, 2023

1 answer

8 votes

82.1k views

Principal root of this equation: 2cos(x) = √(2)

asked Oct 7, 2023

1 answer

2 votes

142k views

What is the native american tribes, the east coast and the west coast contribution to history?

asked Jun 16, 2023

2 answers

8 votes

215k views

There are four Defenders on a soccer team if this represents 20% of the players on the team which equation can be used to find the total number of players on the team

asked Mar 25, 2023

1 answer

3 votes

224k views

What do you mean by cooperatives?

asked Feb 15, 2023

2 answers

2 votes

108k views

What type of em waves is fm radio? And how it is used in wireless communication?

asked Nov 11, 2022

1 answer

17 votes

34.9k views

Ancient China Write about ancient Chinese calligraphy style writing and the writing on oracle bone. Why is calligraphy highly ranked as an art form in China?

asked Nov 10, 2022

1 answer

1 vote

41.0k views

Did ancient Greece have a constitution?

asked Jun 26, 2022

1 answer

4 votes

211k views

Solve for x Simplify your answer x/7 > -6

asked May 21, 2022

2 answers

6 votes

201k views

In this figure, ST is a line. What is the value of x? BTW that says 2/3x

asked Mar 18, 2022

2 answers

2 votes

104k views

Solve for x. 2(x - 1) = x + 10 X =

asked Oct 6, 2021

2 answers

1 vote

212k views

How are regions defined?

asked Sep 19, 2021

1 answer

5 votes

56.8k views

How do I factor x2 - 7 = 6x?

asked Sep 15, 2021

1 answer

2 votes

75.5k views

List 3 benefits of completing this 2-week journaling routine.

asked Jul 5, 2021

2 answers

2 votes

228k views

Please help! i think the answer is either the first or second but i’m not sure

asked Apr 28, 2021

1 answer

3 votes

60.8k views

fatima donates 20000 rs to a school ,the interest on which is to be used for awarding 5 scholarships of equal value every year. If the donater earns an interest of 10% per annum,find the value of each

asked Feb 28, 2021

1 answer

1 vote

85.6k views

You invested in an aggressive growth fund and expect to earn 12.72% annually over the next five years. However, due to strong growth, inflation is expected to be 6.30%. What should be your expected real

asked Feb 21, 2021

1 answer

0 votes

141k views

Importance of various units of a computer

asked Jan 13, 2021

1 answer

5 votes

16.8k views

It took a car 6 hours to cover the distance between points A and B with the speed of 50mp/h. How long will it take a bus to cover the same distance, if it travels at 40mp/h?

asked Dec 5, 2020

1 answer

1 vote

122k views

Which phrase best describes contemporary art? A. Use of different media and materials. B. Use of installation art C. Use of computers

asked May 25, 2020

2 answers

3 votes

140k views

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