# Derick

Most popular questions and responses by Derick
1. ## 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?

2. ## 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

3. ## 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

4. ## 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?

5. ## 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;

6. ## 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

7. ## 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?

8. ## 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?

9. ## 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

10. ## 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

11. ## 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)

12. ## writing

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

13. ## 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

14. ## science

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

15. ## 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

16. ## 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?

17. ## 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

18. ## Math

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

19. ## 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?

20. ## 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?

1. ## science

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

posted on October 12, 2015
2. ## math

still don't get it

posted on March 30, 2015
3. ## math

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

posted on March 30, 2015

25-9=16 boys. the rest are girls

posted on March 30, 2015
5. ## Math

why did the chicken add its opposite to itself

posted on August 27, 2013

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

posted on October 17, 2012

posted on October 17, 2012

yea go lame

posted on October 15, 2012

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

posted on November 16, 2010
10. ## 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

posted on November 10, 2009
11. ## Calculus

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

posted on December 21, 2008