Thursday

February 11, 2016
Total # Posts: 19

**Chemistry**

You have 23.0g of water initially at -46°C. How much energy in joules is required to heat the ice to 0°C? c ice = 2.1 J/g°C. I thought joules was calculated by grams*change in temperature*specific heat. The answer I get from 23*46*2.1 is 2221.8, but web assign says...
*March 1, 2015*

**math**

The distance from City Y to City Z is 2.25 inches on the map. The actual distance is 45 miles. The distance from City X to City Y is 1.75 inches on the map. What is the actual distance, in miles, from City X to City Y?
*January 21, 2015*

**Physics**

This is a inelastic equation, so we use (m1+m2)vf = m1v1+m2v2, where m1 is 4 kg, m2= 9kg. The start with no velocity so Vf=0, meaning the left side is 0. m1v1=4 times 2 =8, We subtract to the left side and divide by m2, 9kg. v2 = 8/9 heading west.
*November 9, 2014*

**Math**

A survey found that 12 out of 15 people prefer hamburgers over pizza. If 65 people are surveyed the next week, how many people will choose hamburgers? How do I work this problem?
*September 18, 2014*

**maths**

the scale of a map indicates that 2 inches equals 5 miles. if the distance on the map between a school and a house is 12inches apart, what is the actual distance between the two buildings?
*September 16, 2014*

**Math**

The surface area of the sphere is 20.25pie square centimeters. What is the diameter of the sphere?
*May 27, 2014*

**math**

Kalin walks at a steady rate of 3 2/3 mph. How long will it take her to walk 8 1/2 miles
*February 7, 2014*

**Quatitative Analysis**

sada
*September 17, 2013*

**math**

What numberis 60% of 35?
*November 14, 2012*

**Chemistry**

How many mols of dinitrogen monoxide are contained in 56.0L at STP?
*June 11, 2012*

**physics**

A child whose weight is 281 N slides down a 6.20 m playground slide that makes an angle of 45.0¡ã with the horizontal. The coefficient of kinetic friction between slide and child is 0.160. (a) How much energy is transferred to thermal energy? (b) If she starts at ...
*May 6, 2012*

**Life oriention**

Name and explain 3 checks and balances that are in place in SOUTH AFRICA that control and regulate media
*March 12, 2012*

**Physics**

In a popular amusement park ride, a rotating cylinder of radius 3.0 m is set in rotation at an angular speed of 0.80 revolutions per second. The floor then drops away, leaving the riders suspended against the wall in a vertical position. (a) What minimum coefficient of ...
*October 20, 2011*

**Physical Science**

idk
*September 25, 2011*

**social studies**

how was it like on the middle passage for slaves??
*February 10, 2011*

**health**

what is a catchy starting sentence to stat talking about " hip replacement system recall"?
*September 7, 2010*

**latin**

how do you do this? 2nd person, future perfect, plural of augeo, augere, auxi, auctus?
*August 12, 2010*

**Algebra**

When you have to graph a set of 14 numbers from 15 to 210,000 on graph paper, how do you decide what intervals to use for the graph when you only have 7 lines?
*October 18, 2007*

**social studies**

Why do many African countries have so much foreign debt and why is it harmful to African civilians. They borrow money to help the country, then the leaders steal most of it. Graft and corruption are rampant. The poor remain poor, but the debt piles up for them to pay.
*February 9, 2007*

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