# Posts by Derick

Total # Posts: 32

**chemistry**

Calculate the mass of Li formed by electrolysis of molten LiCl by a current of 6.7×104 A flowing for a period of 23 h . Assume the electrolytic cell is 86 % efficient. What is the energy requirement for this electrolysis per mole of Li formed if the applied emf is + 7.3 V ?

**English 10**

what are the answers

**writing**

how might someone who listened to the play from the beginning react differently from someone who tuned in late?

**math**

there are 6 times as many dogs as cats. if the total number of cats and dogs 21 how many dogs are there? 3 6 15 18

**science**

I have to pick any landform I want what are some ideas?

**science**

I have an essay about landforms on Friday what are some ideas?

**Algebra II**

The longer side of a triangle is 3 times the shorter side. The third side is 4 inches longer than the shorter. How long is the short side if the perimeter is more than 39 inches?

**math**

still don't get it

**math**

A string of decorative lights is 28 feet long. The first light on the string is 16 inches from the plug. If the lights on the string are spaced 4 inches apart, how many lights are there on the string?

**math**

they are both quadrilaterals so maybe. hope this helps.:)

**Physics**

A television tube operates at 20,000V. What is min wavelength for the continuous x-ray spectrum produced when the electrons hit the phosphor?

**Physics**

The Stanford Linear Accelerator can accelerate electrons to 50GeV (50x10^9eV). What is the minimum wavelength of photon it can produce by bremsstrahlung? Is this photon still called an x-ray?

**Physics**

The Tevatron accelerator at the Fermi National Accelerator Laboratory (Fermilab) outside Chicago boosts protons to 1TeV (1000GeV) in five stages (the numbers given in parentheses represent the total kinetic energy at the end of each stage):Cockcroft-Walton (750keV), Linac (...

**Physics**

Calculate the energy needed to accelerate a spaceship of mass 10,000 kg to a speed of 0.3c for intergalactic space exploration. Compare with the projected energy usage of the Earth in a decade 10^22J?

**physics**

You are traveling in a convertible with the top down. The car is moving at a constant velocity of 16.6 m/s, due east along flat ground. You throw a tomato straight upward at a speed of 9.85 m/s. How far has the car moved when you get a chance to catch the tomato?

**7th grade social studies help quick please**

yea go lame

**3rd Grade Math**

25-9=16 boys. the rest are girls

**7th grade math help quick please**

ya you go to connections academy the only thing you have to do to answer these questions is study

**7th grade math**

I had this same question are you in connections academy

**Math**

why did the chicken add its opposite to itself

**Math**

Let f(x)=x+1 and g(x)= "squareroot" of x what are the domains of "f" and "g"

**physics**

two ends of a string in her hands and then moves her hands up and down so that a wave travels from one end of the string to the other end. In which case will she have a standing wave along the string?

**physics**

a 1.10 x 10 cubed kg car accelerates from rest for a time period of 5.0 sec. The magnitude of the acceleration is 4.60 m/s squared. determine the average power generated by the force that accelerates the vehicle

**4th grade algebra**

1 2 0 -7 -14 -21 -10 -5 -10 3

**math**

i have a gallon of paint that contains 35% solids and 65% water.if i add 5% 6.4 more ounces of water to it what will the solids content be.can you show to figure this out thank you

**ECONOMICS**

What will Happen in this Senerio? If someone deposits $15,000.00 into a Bank and the required reserves is 15% what will be the total increase in checking account deposits in the banking system and what will be the maximum loans available to the public?

**Calc**

How do I do this related rates problem? A plane flying horizontally at an altitude of 1 mi and a speed of 510 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (...

**Programming**

There is a bug in the sortArray method: one particular kind of input will cause a runtime error. In the box provided below, edit sortArray so that it behaves properly on these inputs. public void sortArray () { int beginP = 0; int endP = myArray.length-1; while(beginP<endP...

**Calc**

How do I do this related rates problem? A plane flying horizontally at an altitude of 1 mi and a speed of 510 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (...

**Calculus**

o yeah, sry, i was accidentally on my sister's thing when i asked first

**Calculus**

2y^3 - 3xy = 4 1) Find dy/dx 2) Write an equation for the line tangent to the curve at (1,2) 3) Find d^2y/dx^2 at (1,2)

**science**

what physical property do all the following have in common:glass,water,carbon dioxide,plastic wrap,air? mass density, specific heat, thermal conductivity, X-ray absorption, and many others