Tuesday
July 29, 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 experi...

physics ! HELP !
i got that answer but for part b i got 9.8 is that right ?

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 experi...

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 pie...

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 pie...

physics- help please
the answer was 310 N . Do you know why ?

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 b...

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

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

physics
the 3.1 is 3.1 m

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 ...

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 ...

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

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 su...

trig
Prove 1+cos X/1-cos X = (csc X + cot X)squared

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

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

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!

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

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