Saturday

May 28, 2016
Total # Posts: 312

**Physics**

How many years would it take the planet to orbit the sun. How do you calculate. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Using Kepler's Law you find that the anser is 97^(1.5) years. You can estimate this without using...
*December 29, 2006*

**Physics**

How do you calculate. How many years would it take the planet to orbit the sun. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Use Kepler's Third Law. If you have never heard of it, read http://csep10.phys.utk.edu/astr161/...
*December 29, 2006*

**Physics**

A 3.00 kg object with an intial velocity of + 5.00 m/s in the postive X direction collides with and sticks to a 2.00 kg object with an intial velocity of -3.00 m/s in the negative Y direction. Find the final componet of velocity of the composite object. Use the conservation of...
*December 11, 2006*

** chemistry**

A hydrate of strontium choloride contains 40.54% water. What is the formula of the hydrate ? SrCl2*xH2O. H2O = 40.54% SrCl2 = 100 - 40.54 = 59.46% Take 100 g sample. This gives us 59.46g SrCl2 and 40.54g H2O. Convert to mols. mols SrCl2 = 59.46/158.5 = 0.375 mols H2O = 40.54/...
*November 26, 2006*

**Work energy**

Question Details Three masses m1= 5.0 kg ; m2= 10.0 kg ; m1= 15.0 kg are attached by a strings over frictionless pulleys. The horizontal surface exerts a force of friction of 30N on m2. If the system is released from rest, use energy concepts to find the speed of m2 after it ...
*November 19, 2006*

**spanish**

Could someone please tell me what the word of 'pocket' as in 'pants pocket' is in Spanish? I used a translator, but I thought there was another word for it. ¿Cómo se dice 'pocket' en Español? Thanks in advance. :) El (casilla, ...
*November 16, 2006*

**social studies**

that is not the right answer.
*November 11, 2006*

**chemistry**

write the equation for copper(II) sulfate pentahydrate and ammonium sulfate forming: Cu(NH4)2(SO4)2*6H2O not sure how to balance it Check your question very carefully. Is this a question given to you by a teacher? yeah it is in a lab CuSO4.5H2O + (NH4)2SO4 >>Cu(NH4)2(SO4...
*November 6, 2006*

**Physics newton**

A rocket weighs 1 x10^7 N while on the surface of the earth. The ignition of its engines results in a lift off force of 1.5 X 10^7 N a) what is the mass of the rocket. b) what is its acceleration at lift -off c)How fast will it be moving if it acceleartion at this rates for 10...
*November 5, 2006*

**Physics Newton law**

A 10O0Kg elevator is hoisted upward from rest by a cable. In the first two seconds there is an 1100N tension force in the cable hoisting the elevator. What is the speed after two seconds and how far has it travelled ? Get the acceleration first. Tension=mg + m*acceleration. ...
*November 5, 2006*

**Math**

Why can't the slope of a line be expressed as a decimal or a fraction? The slope of a line should be expressed as a fraction. The formula is Rise over Run. Rise is how much further up u go and run is how much further across do u go. Does that answer your quetion? My math ...
*October 27, 2006*