Homework Answers
F=k*q1*q2/r^2
F= F12+F13 =4*10^9*10*10^-9*1*10^-9/r^2 +4*10^9*10*10^-91*10^-9/r^2
Find the force on charge q1(=10^10^-9C) exerted by two equal charges q2 & q3 (=1*10^-9C) separated by distance 'r'
arrangement: q2-------r--------q1----------r---------q3 (question is: combined force on q1 by q1&q2)
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Write a question for which the following equation is the answer. 2 Times (9.0 Times 10^9...
The solution to a problem is represented by the following equation: (9.0× 10 9 N⋅ m...
The solution to a problem is represented by the following equation: (9.0× 10 9 N⋅ m 2 / C 2 )(+20.0× 10 −9 C)(+50.0× 10 −9 C)/(0.1m ) 2 +(9.0× 10 9 N⋅ m 2 / C 2 )(+10.0× 10 −9 C)(+50.0× 10 −9 C)/(0.5m ) 2 =(10kg) a x . Describe a situation that the equation might represent and formulate a problem for which it is a solution (there are multiple possibilities
Please help. No need for deep explanation just write the correct answer QUESTION 8 Which of...
Please help. No need for deep explanation just write
the correct answer
QUESTION 8 Which of the following statements is true? Dissolving NH4Cl in pure water produces a basic pH Dissolving KCl in pure water produces a basic pH Dissolving KCl in pure water produces an acidic pH Dissolving NH4Cl in pure water produces an acidic pH QUESTION 9 What is the pH of a 1.0*10 MHI solution? HI is a strong acid. (Hint: the pH is not 9.0) pH...
Write an equation for the reaction of each of the following with water a) HNO_3 b)...
Write an equation for the reaction of each of the following with water a) HNO_3 b) HCOOH c) NaOH d) NH_3 (2) Identify the conjugate acid-base pairs in each of the following chemical reactions: a) NH_4^+(aq) + CN^-(aq) NH_3(aq) + HCN(aq) b) CO_3^2-(aq) + HCI(aq) HCO_3^-(aq) + CI^_(aq) c) HCI(aq) + OH^-(aq) H_2O(aq) + CI^-(aq) (3) Classify each of the following as Bronsted acid, Bronsted base, or both in aqueous solution: a) NH_4^+ b) NH_3 c) H_2CO_3 d) HCO_3^- e)...
10. Write an equation for the plane containig the points (-7,2,1). (9.0,-2) and (-5, -1,2). Is...
10. Write an equation for the plane containig the points (-7,2,1). (9.0,-2) and (-5, -1,2). Is this plane parallel, perpendicular or neither to the plane 2x - 3y + 2 = 5? 11. Consider the line that passes through the point (6, -5,2) and that is parallel to the vector (-1, 1, 3). (a) Find symmetric equations for this line (b) Find the point at which this line passes through the yz-plane.
#9 is used to slove #10 Write an equation for the line described. Give your answer...
#9 is used to slove #10
Write an equation for the line described. Give your answer in standard form. 9) Passes through the points (-4,7) and (-2,-9) -9-(0) -2-4-4 = -11 14) = -16 - 8 9.7=-80(x+4 =-74-8x - 32 = 8xty-72-32 Use the previous problem to answer this question. Write your answer in either form. 10) Write an equation for a line parallel to the line from #9 8x+y=-25 1
Calculate the [OH^-] of each aqueous solution with the following [H_3O^+] a. vinegar, 1.0 times 10^-3...
Calculate the [OH^-] of each aqueous solution with the following [H_3O^+] a. vinegar, 1.0 times 10^-3 M b. urine, 5.0 times 10^-6 M c. ammonia, 1.8 times 10^-12 M d. NaOH, 4.0 times 10^-13 M
9.0 4.0 4.9 5.0 4.9 7.0 5.8 6.0 7.2 HH 58 10 11 Figure 1 3.0...
9.0 4.0 4.9 5.0 4.9 7.0 5.8 6.0 7.2 HH 58 10 11 Figure 1 3.0 0 9.0 2.0 10.0 1.0 Figure 2 1.0 1.0 2.0 7.6 9.3 2.0 9.4 7.04.2 8.0 7. 2 9. 0 6.2 10.0 4.0 HHHH Figure 3 9.0 Figure 4 10.0 8.4 Answer the following questions about the relationships between pairs of variables and the values of r, the sample correlation coeffic may be the correct answer for more than one question. the m, n...
Part A.) The electric flux through a spherical surface is 4.0\times 10^4~\text{N}\cdot\text{m}^2/\text{C}4.0×10 4 N⋅m 2...
Part A.) The electric flux through a spherical surface is
4.0\times 10^4~\text{N}\cdot\text{m}^2/\text{C}4.0×10 4 N⋅m 2
/C. What is the net charge enclosed by the surface?
Part B.) The electric field 10.0 cm from the surface of a copper
ball of radius 5.0 cm is directed toward the ball’s center and has
magnitude 9.0*10^2N/C. How much charge is on the surface of the
ball?
Select the correct answer
a.) 2.2*10^{-10} . b.)-1.25*10^{-10} . c.)-1.0* 10^{-9} .
d.)-4.5* 10^{-10) ....
A heat transfer of 9.0 times 10^5 J is required to convert a block of ice...
A heat transfer of 9.0 times 10^5 J is required to convert a block of ice at -15 degree C to water at 10 degree C. What was the mass of the block of ice? Express your answer using two significant figures. M = ____ kg
Question 6 of 10 > A standard solution of FeSCN2 is prepared by combining 9.0 mL...
Question 6 of 10 > A standard solution of FeSCN2 is prepared by combining 9.0 mL of 0.20 M Fe(NO), with 1.0 mL of 0.0020 M KSCN. The equation for the reaction is as follows. Fe(NO), + KSCN = FeSCN2+ + KNO, +2 NO; What allows us to assume that the reaction goes essentially to completion? The concentration of Fe(NO), is much higher than the concentration of KSCN. The excess Fe* prevents the formation of the neutral Fe(SCN), The reaction...
Please help. No need for deep explanation just write
the correct answer
QUESTION 8 Which of the following statements is true? Dissolving NH4Cl in pure water produces a basic pH Dissolving KCl in pure water produces a basic pH Dissolving KCl in pure water produces an acidic pH Dissolving NH4Cl in pure water produces an acidic pH QUESTION 9 What is the pH of a 1.0*10 MHI solution? HI is a strong acid. (Hint: the pH is not 9.0) pH...
Write an equation for the reaction of each of the following with water a) HNO_3 b) HCOOH c) NaOH d) NH_3 (2) Identify the conjugate acid-base pairs in each of the following chemical reactions: a) NH_4^+(aq) + CN^-(aq) NH_3(aq) + HCN(aq) b) CO_3^2-(aq) + HCI(aq) HCO_3^-(aq) + CI^_(aq) c) HCI(aq) + OH^-(aq) H_2O(aq) + CI^-(aq) (3) Classify each of the following as Bronsted acid, Bronsted base, or both in aqueous solution: a) NH_4^+ b) NH_3 c) H_2CO_3 d) HCO_3^- e)...
10. Write an equation for the plane containig the points (-7,2,1). (9.0,-2) and (-5, -1,2). Is this plane parallel, perpendicular or neither to the plane 2x - 3y + 2 = 5? 11. Consider the line that passes through the point (6, -5,2) and that is parallel to the vector (-1, 1, 3). (a) Find symmetric equations for this line (b) Find the point at which this line passes through the yz-plane.
#9 is used to slove #10
Write an equation for the line described. Give your answer in standard form. 9) Passes through the points (-4,7) and (-2,-9) -9-(0) -2-4-4 = -11 14) = -16 - 8 9.7=-80(x+4 =-74-8x - 32 = 8xty-72-32 Use the previous problem to answer this question. Write your answer in either form. 10) Write an equation for a line parallel to the line from #9 8x+y=-25 1
Calculate the [OH^-] of each aqueous solution with the following [H_3O^+] a. vinegar, 1.0 times 10^-3 M b. urine, 5.0 times 10^-6 M c. ammonia, 1.8 times 10^-12 M d. NaOH, 4.0 times 10^-13 M
9.0 4.0 4.9 5.0 4.9 7.0 5.8 6.0 7.2 HH 58 10 11 Figure 1 3.0 0 9.0 2.0 10.0 1.0 Figure 2 1.0 1.0 2.0 7.6 9.3 2.0 9.4 7.04.2 8.0 7. 2 9. 0 6.2 10.0 4.0 HHHH Figure 3 9.0 Figure 4 10.0 8.4 Answer the following questions about the relationships between pairs of variables and the values of r, the sample correlation coeffic may be the correct answer for more than one question. the m, n...
Part A.) The electric flux through a spherical surface is
4.0\times 10^4~\text{N}\cdot\text{m}^2/\text{C}4.0×10 4 N⋅m 2
/C. What is the net charge enclosed by the surface?
Part B.) The electric field 10.0 cm from the surface of a copper
ball of radius 5.0 cm is directed toward the ball’s center and has
magnitude 9.0*10^2N/C. How much charge is on the surface of the
ball?
Select the correct answer
a.) 2.2*10^{-10} . b.)-1.25*10^{-10} . c.)-1.0* 10^{-9} .
d.)-4.5* 10^{-10) ....
A heat transfer of 9.0 times 10^5 J is required to convert a block of ice at -15 degree C to water at 10 degree C. What was the mass of the block of ice? Express your answer using two significant figures. M = ____ kg
Question 6 of 10 > A standard solution of FeSCN2 is prepared by combining 9.0 mL of 0.20 M Fe(NO), with 1.0 mL of 0.0020 M KSCN. The equation for the reaction is as follows. Fe(NO), + KSCN = FeSCN2+ + KNO, +2 NO; What allows us to assume that the reaction goes essentially to completion? The concentration of Fe(NO), is much higher than the concentration of KSCN. The excess Fe* prevents the formation of the neutral Fe(SCN), The reaction...
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