Friday

April 18, 2014

April 18, 2014

Total # Posts: 28

**physics-lenses**

a certain Galilean telescope has a magnification of 2 times. if the focal length of the objective lens is 60 cm, how long is the telescope? thanks :))

**Math- Urgent**

2e= 4e-16 -4e=-4e-16 cancel out the 4e -2e=-16 Divide by -2 e=8

**US History**

did indentured servants know how to read??

**Social studies**

What are physical traits of a region???

**Chemistry**

Assume that a particular reaction evolves 230 kJ of heat and that 28 kJ of PV work is gained by the system. What are the values of delta E and delta H for the system? For the surroundings?

**Math**

A hot air balloon is rising vertically. From a point on level ground 125 ft. from a point on ground level directly under the balloon the angle of elevation of the balloon changes from 19.2 to 31.7. How far does the balloon rise during this period? Draw a diagram when answering...

**science**

What type of environments do leopards need to live in?

**algebra**

Write a function rule for the area of a triangle whose base is 4 ft more than the height. What is the area of the triangle when its height is 6 ft?

**geometry**

find the diameter of a circle if the radius is 12.7

**Social studies**

What's the luisiana purchase

**Science**

In an experiment, BEtsy dissolves 18 grams of powdered dye in 100 grams of pure water. The colored water is then heated on a hot plate, whenthe colored water evaporates completely, how much dye will be left?

**english**

"Yes, I made an important medical discovery. But I couldn't have done it without my team," said Dr.Jones. What's a word that discribes the sentence above?

**chem**

its 474g...your answer is so very wrong!!

**calculus**

if f(x)=ln(x^3 +1) find f '(3), correct to 2 decimal places

**calculus**

if f(x)=ln(x^3 +1) find f'(3), correct to 2 decimal places

**calculus**

supose that (f(x+h)-f(x))/h=3x^2-6h+5 and f(1)=8. ind the equation of the tangent line to the graph of y=f(x) at x=1. if we write this equation in the form y=mx+b then m=? and b=?

**physics**

a box with mass 20kg rests on a frictionless ramp with a 15degree slope. a mover pulls up on a rope attached to the box to pull it up the incline. if the rope makes a 40 degree angle with the horizontal, what's the smallest force that the mover will have to exert to move t...

**Science**

asexual and sexual reproduction

**math**

idk im in the 10th

**sci.**

How do you rank water in terms of density (solid liquid and gas)? (from least to greatest). I think it would be gas, solid, and liquid, but I just wanted to confirm this thanks

**Career Planning**

What is a form of payment that orders the issuing agency to pay the amount printed on the form to another party? And what is the type of check that a bank draws on its own in-house funds? Thank you!!

**social studies**

why must all of the people in chinav farm all the available land?

**Early Childhood Ed.**

Careful teacher supervision and the establishment of rules are keys to preventing the chances of unintentional injuries during indoor and outdoor play. What is the most important quality of a good free-play supervisor? 1. Someone who knows when and how to intervene in settling...

**Early Childhod Ed.**

where can I find a good wesite to help me with a lesson plan for kindergarteners on growing? Thank you for using the Jiskha Homework Help Forum. Hopefully at least one of the following sites will help you: 1. http://www.cloudnet.com/~edrbsass/edsci.htm 2. http://www.oakland.k1...

**Writing lesson plans**

I have to prepare a lesson plan on a health unit "What Makes Our Bodies Grow" for a class size of 15 kindergarteners. Any ideas would be welcome. Does anyone know of websites that can help? Thanks! you could go to the library and maybe get some kid book that you coul...

**Develoing a Lesson Plan**

I have to develop a lesson plan for a health unit on "What Makes Us Grow" based on a class size of 15 children. I have to include objectives, the time required, materials needed, learning activities, measures for evaluation, and any teacher resource information. Does...

**English**

I need help with this question. All of the following elements are enemies of coherence,except which one? 1. misplaced modifiers 2. unclear antecedents 3. placing sentences in the most understandable order 4. lack of transistional words and phrases Which answer has no negative ...

**social studies**

who is Khufu? See http://guardians.net/egypt/khufu.htm an Egyptian King or prince in aincient times

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