Questions and answers by

Lucy X

Questions (21)

Is crystallization a chemical or physical change?
1. 3 answers
2. 582 views
Okay, I want to find the derivative of (x^x)^(x^x)...Well, I already went through the process of finding the derivative of just
1. 1 answer
2. 755 views
Hey, I posted this question before, but I really need some help.Thanks... -- A delivery business plans to serve three towns on a
1. 2 answers
2. 662 views
A delivery business plans to serve three towns on a stretch of highway. For every trip they make to town A, which we'll place at
1. 1 answer
2. 640 views
A 0.25-kg ball is attached to a 26-cm piece of string. The ball is first raised so that the string is taut and horizontal, then
1. 1 answer
2. 2,119 views
(Apparently, I'm not allowed to post URLs, but this question is better illustrated by a diagram, i39. tinypic. com/ 17e336. jpg)
1. 2 answers
2. 524 views
A child on a toboggan slides down a hill with an acceleration of magnitude 1.5 m/s^2. If friction is negligible, what is the
1. 2 answers
2. 5,028 views
George has calculated that he can jump the gorge if the ramp is inclined to 45 degrees, and he attains a speed of 20 m/s. Will
1. 1 answer
2. 943 views
How do you convert 10 Hz to seconds?I know that Hz = s^-1 or 1/s, but I don't understand how to convert the units.
1. 1 answer
2. 580 views
Can someone show me the steps for solving this logarithm?log4x+log412=log<sub448 Thanks!
1. 2 answers
2. 532 views
Are bond lengths measured from the center of the atom to the surface?Or from the surface to the surface of atoms?
1. 1 answer
2. 435 views
What are some benefits of aquaculture?I know there are economic benefits, but what else? **Also can you help me expand a bit
1. 3 answers
2. 621 views
Can you please help me solve this trig equation for 0 ≤ x ≤ 2π?9sin^2(x)-6cos(x)-10=0 Thank you!
1. 2 answers
2. 1,159 views
Hi, I need help with this question:Use the addition and subtraction formulas ti fubd the exact values of the trigonometric
1. 0 answers
2. 699 views
If tan(x)= -(3/4) and x is obtuse, evaluate sin(2x).How do I get started on this question?
1. 2 answers
2. 1,649 views
I have to build a model of a molecule and I was wondering how to determine its bond lenghts.(It has C-H, C-O, C=O, C-N, C-C &
1. 2 answers
2. 717 views
I'm describing the properties of a molecule, and I'm wondering if it's correct to say this -Physical properties: Fine, white,
1. 2 answers
2. 551 views
Why is it possible to have an accurate value of the energy of a hydrogen-hydrogen bond, but not of a carbon-oxygen bond?I know
1. 1 answer
2. 596 views
What is the importance of maintaining an isolated system in calorimetry experiments?I know the basic parts - calorimetry is the
1. 1 answer
2. 801 views
A cell can no longer supply energy when it cannot provide a closed path for electrons and ions to travel. Based on your
1. 1 answer
2. 509 views
Can someone check my answer?5x^3 - 40 =5(x^3-8) =5(x-2)(x^2+2x+4) Also, how do you factor x^6-y^6 as a difference of cubes? As a
1. 1 answer
2. 530 views