i love polka
Most popular questions and responses by i love polka
physics
the sensor in the torso of a crashtest dummy records the magnitude and direction of the net force acting on the dummy. if the dummy is thrown forward with a force of 130.0 N while simultaneously being hit from side with a force of 4500.0 N, what force
asked on November 4, 2008 
physics
Find the vector components along the directions noted in parentheses. a. a car displaced 45degrees north of east by 10.0 km (north east) b. a duck accelerating away from a hunter at 2.0meter per second squared at an angle of 35degrees to the ground
asked on October 4, 2008 
physics
a plane travels 2.5 km at an angle of 35degrees to the ground then changes direction and travels 5.2 km at an angle of 22degrees to the ground. What is the magnitude and direction of the plane's displacement?
asked on October 4, 2008 
math
the price of a dress is reduced by 40%, when the dress still does not sell, it is reduced by .40 of the reduced price, if the price of the dress after both reductions is $72, what was the original price? how would i create an equation for this?
asked on November 11, 2008 
math
a thief steals a number of rare plants from a nursery, on the way out the thief meets three security guards, one after another, to each security guard, the thief is forced to give onehalf the plants that he still has, plus 2 more, the theif is left with
asked on November 11, 2008 
math
suppose that we agree to pay you 8cents for every problem in this chapter that you solve correctly and fine you 5cents for every problem done incorrectly, if the end of 26 problems we do not you each other any money, how many problems did you do?
asked on November 11, 2008 
Math
The average life expectancy for American men born in 1900 was 55 years. Life expectancy has increased by about .2 year for each birth year after 1900. If this trend continues, for which birth year will the average life expectancy be 85 years? how do u
asked on November 6, 2008 
math
f(x)=1/x, g(x)=1/x^21, h(x)=1/x1 and the difference between 6 times the function values of f and 3 times the function values of g is 7 times those of h. how do i solve for x?
asked on November 5, 2008 
calculus
why is the derivative of f(x)= e^lnx f'(x)=1?
asked on November 11, 2008 
physics
can an object be in equilibrium (the state in which the net force on an object is zero) if only one force acts on the object?
asked on November 4, 2008 
English
Can someone explain to me what's happening here? This is from Pride and Prejudice by the way: Darcy made no answer. He seemed scarcely to hear her, and was walking up and down the room in earnest meditation; his brow contracted, his air gloomy. Elizabeth
asked on October 6, 2008 
Grammar
how can i put this in a much better sentence? Their acquaintance starts off unpleasantly but Elizabeth’s personality catches Mr. Darcy’s heart and finds himself attracted to her.
asked on October 4, 2008 
math
Mr. Suki plans to drive 900 miles to his farmhouse, driving an average of 50 miles per hour. How many miles per hour faster must he average, while driving to reduce his total driving time by 3 hours?
asked on October 4, 2008 
math
f(x)=2.5, g(x)=2x+1 and h(x)=x and the difference between 2 times the outputs of f and 3 times those of g is 8 less than 4 times the outputs of h how do i solve for x?
asked on November 5, 2008 
Grammar
I need to put this in a better sentence: Upon his rejection, he realizes how he has been acting and when he writes the letter to explain his actions, it changes his character towards Elizabeth.
asked on October 4, 2008 
Grammar
I need a word to complete this sentence: But when he proposes to Elizabeth, she turns him down which causes Mr. Darcy to reevaluate his...
asked on October 4, 2008

math
a thief steals a number of rare plants from a nursery, on the way out the thief meets three security guards, one after another, to each security guard, the thief is forced to give onehalf the plants that he still has, plus 2 more, the theif is left with
posted on November 11, 2008 
Math Grade 10
x=2.66 i plugged it in my graphing calculator
posted on November 5, 2008 
government
a party system is a group of people(politicians) who share the same ideas or agree on issues.. in the U.S., we have 2 major parties, Republican and Democrat and whenever there is an election, there can only be one person from each party to represent their
posted on November 5, 2008 
physics
a plane travels 2.5 km at an angle of 35degrees to the ground then changes direction and travels 5.2 km at an angle of 22degrees to the ground. What is the magnitude and direction of the plane's displacement?
posted on October 4, 2008