August 26, 2016

Posts by becky

Total # Posts: 620

Given that the Moon's period about the Earth is 27.32 days and the distance from the Earth to the Moon is 3.84*10^8 m estimate the mass of the Earth. Assume the orbit is circular. Why do you suppose your estimate is high? The force of attraction= centripetal force G MeMm/d...
January 8, 2007

Use the table of 7.3 to find the point between the Earth and the Sun at which an object can be placed so that the net gravitational force exerted on it by these two objects is zero. TABLE 7.3 <--- for the earth and the sun Body
January 8, 2007

1. the average distance separating the Earth and the Moon is 384 000 km. Use the data table 7.3 to find the net gravitational force the eath and the moon exerts on a 3.00*10^4-kg spaceship located halfway between them. TABLE 7.3 <--- for the moon and the earth Body
January 8, 2007

the vertices are at (2,1) and (2,7) and focus is at (2,*) write the equation of the hyperbola that meets each set of conditions. Is the asterisk supposed to be an 8? It has to be some number. I will set this up for you later of you respond. The fomulas you need are in most ...
January 4, 2007

US history
here is my question Why did socialism appeal to some Americans in the late 1800s? Many people were disturbed by the horrendous working conditions for laborers in factories. They worked long hours, made very little money, and therefore lived economically impoverished lives. ...
January 4, 2007

A 2000-kg car rounds a circular turn of a radius 20m. if the radius flat and the coefficient of friction between tires and road is .70, how fast can the car go without skidding? centripetal force = frictional force m v^2/r= mg*mu solve for v. um i was i need to ...
January 2, 2007

hi i have a physics question i dont understand here is the question A sample of blood is placed in a centrifuge of radius 15 cm. the mass of the corpuscle is 3.0*10^-16 kg, and the magnitude of the force required to make it settle out of the plasma is 4.0X10^-11 N. At how many...
January 2, 2007

English Essay
i was wondering if anyone can help me with an essay that is a comparison between the Rapunzel by the Grimm Brother's to a story called "Rapunzel Rapunzel" by Jean Ryes. The prompt is: Compare the two essays with the hair,tower and princ and how it is related to ...
December 10, 2006

sorry i know i keep asking but my teacher wont be here today and tomorrow..and i dont understand these four problems... 1) a 65.0-kg person throws a .045kg snowball forward with a ground speed of 30.0 m/s. a second person with a mass of 60.0-kg catches the snowball. both ...
December 8, 2006

hi well i have two questions i dont understand how to solve and all. 1) The front of a 1400-kg car is designed to absorb the shock of a collision by having a "crumple zone" in which the front of 1.2m of the car collapses in absorbing the shock of a collision. if a ...
December 6, 2006

the big idea of energy
You guys I have an assesment on the "The Big Idea of Energy" and I have no clue about it, no one told be anything! It's soooo stupid so you have got to tell me what it NOW!!!
December 5, 2006

HI well i have two questions 1) a 2.0-m-long pendulum is released from rest when the support string is at an angle of 25 with the vertical. what is the speed of the bob at the bottom of the swing? 2)A 2.0*10^3-kg car starts from rest at the top of a 5.0-m-driveway that is ...
November 27, 2006

An object moves across a straight line so that after t seconds, is distance from its starting point is: D(t)=t^3 - 12t^2 + 100t + 12 meters. Find the acceleration of the object after 3 seconds. I believe acceleration is calculated by taking the second derivative. D'(t) = ...
October 3, 2006

can you please tell me types of metal and about them thanks
September 23, 2006

making dot arrays
Numbers that CAN be made into a 2-row dot array are EVEN numbers (2,4,6,8,etc). Those that CANNOT are called ODD (1,3,5,7). in other words, if the question is asking you to make a 2-row array, it wants you to divide the number by two and make 2 rows of X dots. Example - Make a...
August 31, 2006

Math - Chain Rule
I've been having some difficulities with this but I think I figured it out. Could you double check me and make sure I'm doing the correct steps? Differentiate and simplify the answer. f(x) = 2(3x+1)^4 (5x-3)^2 =2(3x+1)^4 [2(5x-3)(5)] + [8(3x+1)^3] (5x-3)^2 =2(3x+1)^4 [...
August 25, 2006

geometry:linear measure and precision
RS=4x,RS=ST,and RT=24
August 23, 2006

math - marginal analyis
A factory's output is Q=600K^1/2L^1/3 units, (read 600 x K to the 1/2 power x L to the 1/3 power). K denotes capital investment and L denotes the size of the labor force. Estimate the percentage increase in output that will result in a 2% increase in the size of the labor ...
August 13, 2006

math-marginal analyisis
Just need someone to double check this problem. I just don't feel comfortable with my answer. An enviromental study of a certain communtiy suggests that t years from now, the average level of carbon monoxide in the air will be Q(t)=0.05t^2+0.01t+3.4 parts per million. (...
August 11, 2006

I can only laugh! How freakin' funny that everyone at Axia doing their ETH125 homework trying to see what they can find on the net hits this site. Thanks for the tips (yes, they are just tips - because it does not tell you what it says in Chp2 pg34.) Good luck to all ...
July 20, 2006

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