Sunday

October 26, 2014

October 26, 2014

Posted by **bob** on Wednesday, February 1, 2012 at 7:07pm.

game, they have a net at a distance. The net is

made up of 1 mm thick wires. The wires run

vertically and horizontally to form a mesh that

has 5 mm square openings between them. A

bullet 2 mm in diameter must be shot in such a

way that it goes through the net without

touching the wires. Such a shot would result in

100 points. All other scenarios will result in 0

points. Bob is set to start the game. What is

the probability that Bob scores 100 points

from his first shot?

- math -
**Steve**, Thursday, February 2, 2012 at 9:39amarea of 5mm square: 25mm^2

cross-section of 2mm bullet = 3.14mm^2

portion of square occupied by bullet: 3.14/25 = 0.126

So, there's a 1-.126 = .874 chance the bullet will not hit the wires.

Actually, the dimensions need to be adjusted slightly to account for the space occupied by the wires, since he's firing at the mesh, not a single opening. I'm sure you can handle that.

- math -
**PrasadBabu**, Thursday, February 2, 2012 at 7:35pmAre you just posting the NSF POM's online for the answer? I am disappointed...

**Answer this Question**

**Related Questions**

math - Bob and Jack play a shooting game. In this game, they have a net at a ...

Stats - A game is played where a biased coin is flipped. A head is twice as ...

math - A game consists of rolling a die and pays off as follows: $5.00 for a 6...

k - Two wires parallel to each other and seperated by a distance d carry ...

trig - A pole is braced by two wires that extended from the top of the pole to ...

physics - Two long, straight wires are separated by 0.12 m. The wires carry ...

Statistics - In a certain game of chance a person pays $5 to play a game. A ...

physics - Two identical wires with resistance,R and mass,m rest on two smooth ...

Physics/math - Two parallel wires carry 1-A currents in unknown directions. The ...

Physical Science - Two parallel transmission wires are laid between electrical ...