Questions by Sergii Dymchenko

Questions by Sergii Dymchenko

Crystalline germanium (Z=32, rho=5.323 g/cm3) has a band gap of 0.66 eV. Assume the Fermi energy is half way between the valence and conduction bands. Estimate the ratio of electrons in the conduction

asked Dec 20, 2021

1 answer

3 votes

201k views

It takes of heat to raise the temperature of Object A by , and to raise the temperature of Object B by . Suppose A and B are brought into contact. A is initially hotter. A is seen to cool down by . How

asked Dec 11, 2021

1 answer

1 vote

195k views

Consider the data set: 26, 29, 24, 17, 27, 20, 23, 21, 26, 27. (a) Find the median and the upper and lower quartiles for this data set. (b) Setup then evaluate the numerical expression for the mean of

asked Sep 13, 2021

1 answer

2 votes

87.1k views

3. Which numbers are rational? a. Square root of 81 b. Square root of 50 c.-12 d. 0 e. 12/5 f. 6.54

asked Sep 9, 2021

2 answers

4 votes

115k views

The Cash account of First on AlertSecurity Systems reported a balance of $ 2 comma 430at December31,2018.There were outstanding checks totaling $ 1 comma 000and a December31 deposit in transit of $ 200.

asked Aug 9, 2021

1 answer

5 votes

108k views

State 2 stages that must complete before a sperm fuses with secondary oocyte

asked Jul 20, 2021

1 answer

4 votes

85.3k views

How many dimes are in $1000? A) 100 B) 1,000 C) 10,000 D) 100,000 E) 1,000,000

asked May 10, 2021

2 answers

2 votes

107k views

Which characteristic of enzymes allows it to be highly specific in the reactions they catalyze?

asked Apr 12, 2021

2 answers

3 votes

35.0k views

In the book, And The Mountain Echoes Chapter 5 Question is: In addition to all of the important family relationships in the book, there are also many nongenetic bonds between characters; some of them just

asked Dec 24, 2020

1 answer

3 votes

45.9k views

The balance sheet of the Algonquin Company reported assets of $50,000, liabilities of $22,000 and common stock of $15,000. Based on this information only, the amount or balance for retained earnings must

asked Dec 22, 2020

1 answer

3 votes

98.7k views

Which of the following reactions are redox reactions? a. H2CO3(aq) + 2NH3(aq) → 2NH4+(aq) + CO32-(aq) b. 2Mg(s) + O2(g) + 2H2O(l) → 2Mg2+(aq) + 4OH-(aq) c. Zn(NO3)2(aq) + 2NaOH(aq) → Zn(OH)2(s) + 2NaNO3(aq)

asked Jul 15, 2020

1 answer

0 votes

130k views

During much of World War II, who had the responsibility of keeping supply lines open so that U.S. troops had adequate food, gasoline, weapons and ammunition, and medical supplies? A. new military recruits

asked Jul 10, 2020

1 answer

4 votes

111k views

12 divided by 4+3x9+5

asked Feb 6, 2020

2 answers

2 votes

194k views

How do i find the value of x and y ?

asked Nov 1, 2019

1 answer

5 votes

33.1k views

If an investment is considered volatile it means

asked Dec 15, 2018

1 answer

0 votes

207k views

if a television with mass 15kg is lifted to a shelf of height 1.2 m, how much gravitational potential energy is added to the television.

asked Jul 22, 2018

2 answers

4 votes

172k views

Fill in the blank with the correct pronoun. A Juan _____ gusta la comida. me te nos le

asked Jun 17, 2018

2 answers

0 votes

42.0k views

According to the Holland Codes, which career is best suited to someone who scored highest in the investigative category?

asked Mar 18, 2018

2 answers

1 vote

49.1k views

Which Gender Has Better Reflexs

asked Sep 5, 2017

2 answers

3 votes

74.5k views

What does frescoes found in Roman catacombs usually picture

asked Jul 13, 2017

1 answer

3 votes

156k views

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