Mara

This page lists questions and answers that were posted by visitors named Mara.

Questions

The following questions were asked by visitors named Mara.

Complete parts a – c for each quadratic function. a. Find the y-intercept, the equation of the axis of symmetry and the x-coordinate of the vertex. b. Make a table of values that includes the vertex. c. Use this information to graph the function. 1. f(x)...

Simplify: 1.SquareRoot(-144) 2.SquareRoot(-64x^4) 3.SquareRoot(-13)*SquareRoot(-26) 4.(-2i)(-6i)(4i) 5. i^13 6. i3^8 7.(5 – 2i) + (4 + 4i) 8.(3 – 4i) – (1 – 4i) 9.(3 + 4i)(3 – 4i) 10.(6 – 2i)(1 + i) 11. (4i)/(3+i) 12. (10+i)/(4-i) 13. (-5 + 2i)(6 – i)(4 +...

A(n) 840-kg dragster accelerates on a race track from rest to 85 km/h in 0.90 seconds. (a) What is the change in momentum of the dragster? (b) What is the average force exerted on the dragster? (c) What exerts that force?

A 0.105-kg hockey puck moving at 20 m/s is caught and held by a 77-kg goalie at rest. With what speed does the goalie slide on the ice?

A force of 291.0 N is used to push a 140 kg mass 30.0 m horizontally in 3.00 s. Calculate the power developed in kW.

Two identical positive charges exert a repulsive force of 6.6 multiplied by 10^-9 N when separated by a distance of 5.8 multiplied by 10^-10 m. Calculate the charge of each.

A positive charge of q = 2.6 µC is pulled on by two negative charges. As shown below, one, −2.0 µC, is 0.050 m to the north and the other, −4.0 µC, is d = 0.029 m to the south. What total force is exerted on the positive charge?

Two charges, qA and qB, are separated by a distance, d, and exert a force, F, on each other. Analyze Coulomb's law and answer the following questions. What new force will exist if d is cut in half? What new force will exist if qA is tripled and d is doubl...

The nucleus of an atom has a charge of 65 protons. (a) What are the direction and magnitude of the electric field at 4.9 x 10^-10 m from the nucleus?

A 16.0 ohm and a 24.0 ohm resistor are connected in parallel. A difference in potential of 32.0 V is applied to the combination. What is the equivalent resistance of the parallel circuit? What is the total current in the circuit?

An electron is accelerated by a 4.7 kV potential difference. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 8.0 cm?

To what extent would it be accurate to say that New England, Middle, and Southern Colonies had merged to create a single American Society by the end of the French and Indian War?

What were some of political issues that was dealt in the Gilded age? What is the current political issues that is faced today? Are they Similar or different? Explain.

How do I answer and graph this problem 4x + 3y = 4

Which of the following equals (-4) A(-4) . (1-4) <- That's a fraction B(-4) . (1) C(-4) . (4)

I need help solving and graphing the equation. y= -7+3

A watch manufacturer claims that its watches gain or lose no more than 8 seconds in a year. How accurate is this watch, expressed as a percentage?

Please, help me with this problem: frind the derivative of each function at the given number. 21. f(x)= -4x + 5 at 3 22. f(x)= -4 + 3x at 1 thanks

A shell is ﬁred from the ground with an initial speed of 1.70 × 10 3 m/s (approximately ﬁve times the speed of sound) at an initial angle of 70.0 ◦ to the horizontal. The acceleration of gravity is 9.81 m/s 2 . a) Neglecting air resistance, ﬁnd the shell’...

A certain automobile engine delivers 2.24 ✕ 10^4 W (30.0 hp) to its wheels when moving at a constant speed of 31.0 m/s ( 69 mi/h). What is the resistive force acting on the automobile at that speed?

If 5.0 mL of 0.12 mmol dm-3 MB solution is diluted by adding 20.0 mL of 0.2 mol dm-3 HCl to it, what is the new MB concentration?

The molar mass of the reagent, Fe(NH4)2(SO4)2.6H2O is 392.14 g/mol. Now suppose the measured mass of Fe(NH4)2(SO4)2.6H2O during the practical was 0.0218 g and this was dissolved in 50ml of deionized water that contains 1 to 2ml of concentrated sulphuric a...

A 10.0 mL sample of supernatant liquid from the system described by equation 1 was titrated with 0.01022 M EDTA solution to an end-point at 16.90 mL. Titration of the blank gave a titre (end-point) at 1.45 mL. Determine the titration volume required to ti...

al(i) Determine the number of moles of Ca2+ present in the titrated sample. (ii) Determine the [Ca2+] and hence the solubility of CaSO4.2H2O in the original 10.0 mL sample. so

If a rate of 80.0 mL of an aqueous solution of potassium hydroxide concentration of 0.25 mol / L are partially neutralized by 20.0 mL of an aqueous solution of nitric acid concentration of 0.50 mol L. Determine pH of the final solution. kOH + HNO3 -> H2O...

Please chrck my answer! How does a galvanometer use a magnetic field to indicate the strength of an electric current? When a current is passed through a magnetic field, it goes through a coil and to a galvanometer.

calculate the ph of a solution that is 0.111 M HCI(strong solution)

Can someone please check my German? _____ du die Fragen? A.Beantwortest B.Fragtest <<< C.Weiß D.Lest Wir lernen über Computers in ___. A. Sozialkunde B. Englisch C. Informatik <<<< D. Integralrechnung

Please check my answer~ What is the key difference between a federal government and a confederate government? A.In a federal government, local governments have the most power. In a confederate government, a central government has the most power. B.In a co...

How do you solve it in pictures

How to do the coffee shop has nine pies

calculate the volumes of acetone and ethanol that was used to mix together in order to produce 1 litre (1000ml) of equimolar mixture. helpful notes are, ethanol Mr=46 and a density (20 degrees C)=0.789g/ml, acetone Mr=58 and density (20 degrees C)=0.793g/...

A bag contains a markers, 3/8 of which are red. How many other color markers are in the bag?

I know I am over thinking this problem like always but none of this makes sense to me for some reason.. KHP was used to determine the concentration of a KOH solution. If 0.78g of KHPwas used and 42.17 ml of KOH was used to titrate it to the endpoint what'...

Do all cells in a person have the same banding pattern?

Which of the following is an example of narrative Non-Fiction A: An autobiography of a dancer B: A bus schedule for Chicago C: An owners manual for a car D: A pamphlet asking people to vote I think it's A... but I'm not sure. Can someone help me?!

Answers

The following answers were posted by visitors named Mara.

accidently posted the wrong thing, i will re post the right assignment for help thankyou!!!

I accidently posted the wrong thing, i will re-post the right assignment for help thankyou!!!

Thanks I didn't even think of that! I am however stuck on these problems, i know theres a lot though, any help would be great, but i can't seem to understand the complex numbers, thankyou! Simplify: 1.SquareRoot(-144) 2.SquareRoot(-64x^4) 3.SquareRoot(-13...

d would be 1/4 * F qA and d would be 6 * F

Using the volume 1.5mL of 95% ethyl alcohol that's required to dissolve 0.3g at 78 C, how do i find how much sulfanilamide that will remain in the mother liquor after the mixture is cooled to 0 C?

Since the solubility of sulfanilamide at 0 C is 14mg/mL, do I multiply 1.5mL and 14 to get how much sulfa will remain in the mother liquor?

I'm actually trying to do this problem right now. I'm a bit stuck on the second part. How do you find the speed of the object at t = 2.0s? Every kinematic equation I've tried to use requires acceleration, and I can't find acceleration with having the fina...

I have no idea. I haven't seen the animated cartoon of animal farm.

I surpose you could ask: Why did you become an English teacher? Where did you study to become a teacher? Why did you decide to teach? Is teaching English diffecult? Do you regret you choice to teach? What's your favourite book?

Well then lol could you help me?

@Ms.Sue Please check 1.B 2.D 3.A

i have no idea help

DRBob222 what do you mean when you say That is done by 0.218 x (atomic [mass Fe/molar mass Fe(NH4)2(SO4)2.6H2O]*100 = ? Could you please explain further?

The mass of the compound is 0.0218g and if I calculate the mass of Fe I get a mass of 0.31g which is more than the mass of the whole compound.

Thank you for all your help.

A square is cut in half on the diagonal, creating two equal triangles.each triangle has an area of 0.32 square units. What is the lenth, in units, of the original square. HELP ME PLEASEE

I don't know the answer to this question. Please help

Phloem actively transports sugars into a part of the phloem called sieve tubes. This active transport (called translocation) requires the cells to do work and use energy and can only be done while alive. Xylem cells on the other hand transport water by me...

The real numbers and the coordinate plane unit test?

Kattie80 is right for the 4 question quiz EXCEPT for #4. She said it was 15 or D. She meant 15 or C. Hope this helps

Can u explain to me

Look for the R-value. "R" means resistance to heat flow. The higher the R-value, the greater the insulating power. Almost all insulation products have to tell you their R-value — pipe, and duct insulation are the only exceptions.

The answer is; A

Its 2020 if your seeing this your very special:)

Does one chromosome command for one trait? Why or why not?

ou meant: f(x) = y = (2x+3)/(3x-2) so f(x+h) = (2x + 2h + 3)/(3x + 3h - 2) dy/dx = lim [ (2x+2h+3)/(3x+3h-2) - (2x+3)/(3x-2) ]/h , as h --->0 = lim [ ((2x + 2h + 3)(3x-2) - (2x+3)(3x+3h+2))/((3x+3h-2)(3x+h))]/h = lim [ (5h/((3x+3h-2)(3x-2))]/h , as h -->0...