Saturday
August 23, 2014

Posts by emmie


Total # Posts: 19

physics- please help
A 65 kg bungee jumper leaps from a bridge. She is tied to a bungee cord that is 11m long when unstretched, and falls a total of 30m . Part a) Calculate the spring constant of the bungee cord assuming Hooke's law applies. part b)Calculate the maximum acceleration she ...
May 24, 2012

physics ! HELP !
i got that answer but for part b i got 9.8 is that right ?
May 23, 2012

physics ! HELP !
A 65 kg bungee jumper leaps from a bridge. She is tied to a bungee cord that is 11m long when unstretched, and falls a total of 30m . Part a) Calculate the spring constant of the bungee cord assuming Hooke's law applies. part b)Calculate the maximum acceleration she ...
May 23, 2012

phyics mc Q
Q:Which of the following are expressions for a type of potential energy? ( this question can have more than one answer !!!! ) a)mg(h_F-h_i) b)F_f*d c)(1/2)mv^2 d)(1/2)k*(final_x^2-initial_x^2) Q: If you are trying to figure out how high you can jump, which of the following ...
May 22, 2012

mc questions !
Q:Which of the following are expressions for a type of potential energy? ( this question can have more than one answer !!!! ) a)mg(h_F-h_i) b)F_f*d c)(1/2)mv^2 d)(1/2)k*(final_x^2-initial_x^2) Q: If you are trying to figure out how high you can jump, which of the following ...
May 22, 2012

physics- help please
the answer was 310 N . Do you know why ?
May 15, 2012

physics- help please
A large 62.0 kg board is propped at a 44 degree angle against the edge of a barn door that is 3.1m wide.How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that there is negligible friction between the door and the board ...
May 15, 2012

physics
thats so rude. people make mistakes. back off and leave your comments to yourself.
May 15, 2012

physics
i put the answer in. it said it was wrong. I having really hard time for this problem, it doesnt included a picture or diagram hard to imagine
May 15, 2012

physics
the 3.1 is 3.1 m
May 15, 2012

physics
A large 62.0 kg board is propped at a 44 angle against the edge of a barn door that is 3.1 wide.How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that there is negligible friction between the door and the board but that ...
May 15, 2012

physics
A large 62.0 kg board is propped at a 44 angle against the edge of a barn door that is 3.1 wide.How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that there is negligible friction between the door and the board but that ...
May 14, 2012

physics
A person exerts a horizontal force of 36 N on the end of a door 97cm wide. What is the magnitude of the torque if the force is exerted perpendicular to the door and What is the magnitude of the torque if the force is exerted at a 70.0 angle to the face of the door? Thank you
May 14, 2012

physics
A 75kg snowboarder has an initial velocity of 5.0 m/s at the top of a 28 degree incline. After sliding down the 110m long incline (on which the coefficient of kinetic friction is = Bk0.18), the snowboarder has attained a velocity v . The snowboarder then slides along a flat ...
May 8, 2012

trig
Prove 1+cos X/1-cos X = (csc X + cot X)squared
February 15, 2012

chemistry
Do anyone know which of these are covalent or ionic Sodium Chloride Sodium Carbonate Sodium Bicarbonate Potassium Chloride Sucrose Copper(II)Sulfate Corn Starch Corn Oil Rubbing Alcohol
January 30, 2011

5th grade
i am in 5th gade and i go to a school wednesdays and thursdays for "gifted education"
December 9, 2008

5th grade
No all you need is bars! numbers! and words! you also need like on one side their is HOW MANY GIRRAFES SLEPT ON THURSDAY then and the bottom its has numbers then the bar goes to where its supposed to so no i dont think you need a file!
December 9, 2008

Biology
Why do we use the flourscent dye in DNA sequencing, what does it show?
March 9, 2008

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