Friday

January 30, 2015

January 30, 2015

Total # Posts: 320

**Physics**

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration of a person situated...
*March 3, 2008*

**Physics**

A cyclist approaches the bottom of a gradual hill at a speed of 20 m/s. The hill is 4.4 m high, and the cyclist estimates that she is going fast enough to coast up and over it without peddling. Ignoring air resistance and friction, find the speed at which the cyclist crests ...
*February 25, 2008*

**Physics**

A cyclist approaches the bottom of a gradual hill at a speed of 20 m/s. The hill is 4.4 m high, and the cyclist estimates that she is going fast enough to coast up and over it without peddling. Ignoring air resistance and friction, find the speed at which the cyclist crests ...
*February 25, 2008*

**Physics**

Batman (mass = 90 kg) jumps straight down from a bridge into a boat (mass = 530 kg) in which a criminal is fleeing. The velocity of the boat is initially +20 m/s. What is the velocity of the boat after Batman lands in it?
*February 25, 2008*

**physics**

A 0.052-kg arrow is fired horizontally. The bowstring exerts an average force of 80 N on the arrow over a distance of 0.75 m. With what speed does the arrow leave the bow?
*February 25, 2008*

**algebra**

p=2l+2w solve for l
*February 23, 2008*

**algebra**

p=2l+2w forl
*February 22, 2008*

**physics**

A person pulls a toboggan for a distance of 40.0 m along the snow with a rope directed 15.0° above the snow. The tension in the rope is 69.0 N. (a) How much work is done on the toboggan by the tension force? (b) How much work is done if the same tension is directed ...
*February 19, 2008*

**Physics**

A 97.0-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.70 m/s2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of 1.80 m/s2?
*February 18, 2008*

**electromagnetism**

Why does the speed of wind have no affect on a homemade electromagnetic generator attatched to a windmill? I did an expiriment using a windmill and altered the wind speed 3-11mph. There was no change in the amount of amps genrerated. Are my results just wrong or is there a ...
*February 11, 2008*

**Math -**

PLEASE HELP ME FIGURE THIS PROBLEM! Solve equation and check the solution -3(r+5) = 3(r - 1)__________________
*November 12, 2007*

**languege arts**

rentcuy
*November 4, 2007*

**math**

I have 5 pieces each is a triangle and they are supposed to somehow form a large triangle. Everyone has tried and we can't figure it out. I see lots of solutions online for 7 piece tangrams but nothing for a 5 piece. Thank you Zach I suspect there are 180 solutions to this...
*August 10, 2007*

**algebra**

evaluate the numerical expression 2 (14-7) + 5 Is the 2 supposed to be an exponent of something? Where does it go?
*May 16, 2007*

**Physical Science**

What are the 4 nuclear forces? Out of the 4 which one is the strongest and which one is the weakest? Thanks http://hyperphysics.phy-astr.gsu.edu/hbase/forces/funfor.html THANK YOU As a side note, these are not nuclear forces. They are the four fundamental forces in nature, ...
*April 11, 2007*

**drivers ed**

It is a crossword puzzle nine letters long. Vital to vehicle saftey
*March 14, 2007*

** Why dogs are better than Cats!**

shouldn't we just get over it and just finish this stupid debate
*November 24, 2006*

**Algebra**

-6h + 4 - 3 + h = 11 4-3-11=6h-h -10=5h -2=h
*September 21, 2006*

**unscramble**

afsedrniru
*September 6, 2006*

**Science guys :)**

hey guys a got a few problems i need help with im really desperate for help theyre due soon online :( 1.Suppose that a constant current of 89 mA flows in a conductor. Find the absolute value of the total charge that passes through the conductor in 3 minute(s). Charge = ______ ...
*August 31, 2005*