October 20, 2014

Posts by Wally

Total # Posts: 21

probability science
February 6, 2014

i logic
Truth tables can determine which of the following
September 8, 2013

The standard score for hours spent online at home for minnesotan was 3.00 approximately how many hours do minnsotan adults spend online at home? Show your work and round all cuclulation to the tenth
March 21, 2013

A 7·cm tall candle is placed 125·cm from a lens with a focal length of +25·cm. Note: enter the absolute value of your answers for all distances and heights ... use the signs to determine the type and orientation of the images. a) How far from the lens will...
March 18, 2013

A trapeze artist sailing through the air rotates with a rotational speed of 0.9·rev/s. If she contracts to reduce her rotational inertia to one sixth of what it was, what will her new rotational speed be? _____ rev/s? Can she completely stop her rotation while still ...
February 6, 2013

Consider a 9·kg disk with a radius of 0.9·m and rotating about an axis passing through its center. (a) What is its rotational inertia? ______ kg·m2 ? (b) Suppose the disk is rotating counterclockwise and speeding up with a rotational acceleration of 4&...
February 6, 2013

A hydraulic jack is used to lift a 2000 pound car. If the output piston (the one the car is sitting on) has an area of 60 square inches, how much force must be applied to the 0.5 square inch input piston to lift the car? ____ pounds?
February 6, 2013

A 800·kg elevator is attached to a cable whose tension is 7800·N. Which of the following statements could describe the motion of the elevator? Choose all that apply. slowing down as it moves upward moving upward at constant speed speeding up as it moves downward ...
January 17, 2013

You are pushing a box up an inclined ramp. The force you exert on the box is 19·N up the ramp. The weight of the box is 100·N straight downward. The force friction exerts on the box is 8·N down the ramp. The normal force exerted on the box by the ramp is ...
January 17, 2013

Business Math
Al Smith, who lives in Territory five, carries 10/20/5 compulsory liability insurance along with optional collision that has a $300 deductible. Al, who was at fault in an accident, caused $4,000 damage to the other auto, as well as $900 damage to his own. Also, the courts ...
January 11, 2013

you forgot to convert form from frequency to angular velocity where 197rpm=3.28rev/s*2pi apart from that the steps are accurate
October 7, 2012

How would you get the exact value of the following problem: 29 * 6^(-3x) = 11 Thanks!
February 21, 2012

What does Ca^(2+) + Na2CO3 create? What does Ba^(2+) + Na2CO3 create? What does Ba^(2+) + Na2CrO4 create? Thank You
February 20, 2012

Can you help me set up this problem please P(t) = 100/1+48.2e^-0.52t If the company's claim is true, how many months will it take to have mastered 80% of the program. I just need help setting it up Thanks!
February 19, 2012

In my experiment I heated some oxide of tin, in order to figure out its empirical formula. How would the empirical formula be affected if the oxide was not heated to dryness? Also If some oxide splattered out of the container, how would this affect the calculated ration of the...
February 13, 2012

A particle called neutral pi meson (or pion) decays into two photons and nothing else. If the pion is initially at rest (rest mass 135Mev). (a) what are the energies of the photons ? (b) What are the magnitudes of the momenta of the photons (c) How are they moving with respect...
June 8, 2011

Computer Science
I need to write a program to solve for the following: Suppose that the file USPRES.txt contains the names fo the frist 43 United States presidents and the file USSENATE.TXT contains the names of all former and present US Senators. Write a program with nested loops that uses ...
March 4, 2011

Why is water essential for light reactions?
October 16, 2008

when members of a species are held by people in zoos or other conservation facilities is what
September 24, 2008

Physical Science
What is the name of the binary compound formed from potassium and iodine?
May 15, 2008

Physical Science
Using the kinetic theory, explain why the pressure of a gas increases when its temperature increases.
February 13, 2008

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