Recent content by ian_durrant

That sounds by the far the most practical way to solve this delema. haha thanks.

haha i knew someone would bring up the police so there doesn't really sound like much that can be done besides soundproofing my walls. are there any type of smaller headphones that do noise cancellation?

simply put i believe when you have an the absolute value is how far the number is away from zero on the number line. So if you had the absolute value of -4, it would be four. try this for further understanding, including the real mathmatical definition...

Here's an interesting problem that might be best solved by physics: Lets say your neighbors insist on using a loud subwoolfer late at night, it travels through your appartment walls and keeps you up all night. What would be a good way to cancel out the noise, other than earphones?

ahhh i see it now ok i redefined variables: F(m) = force from moon F(e)= force from earth G= gravitational constant x= distance where force of moon is greater than earth m(m)= mass of moon m(2)= spaceship Gives me... F(m)= Gm(m)m(2)/x F(e)= G81.4m(m)m(2)/ (3.85*10^8-x)^2 Now...

Ok I took the suggestion of solving for x and here's what I did: x= distance from center of Earth where moon exerts more force -F(1)= G81.4m/x (this is the force from the Earth, negative since its working in the opposite direction from the moon) F(2)= Gm/(3.85*10^8-x) force that the...

Homework Statement A spacecraft is on a journey to the moon. At what point, as measured from the center of the earth, does the gravitational force exerted on the spacecraft by the Earth balance that exerted by the moon? This point lies on a line between the centers of the Earth and the...

Ahhh i see it now, the height wasn't even needed in this problem, thanks for the tip.

[SOLVED] Kinematics in 2-dimesions Homework Statement A soccer player kicks the ball toward a goal that is 25.0 m in front of him. The ball leaves his foot at a speed of 19.2 m/s and an angle of 65.8 ° above the ground. Find the speed of the ball when the goalie catches it in front of the...

so it would be a logical assumption that g=0 in the x direction, correct? so an equaiton would look something like this? 195=V(0)(3.13)+(1/2)(0)(3.13)^2 195=3.13V(0) V(0)= 62.3 m/s?

I'm a little confused, wouldn't V=0 on the x-axis if the car had stopped/crashed, but on the Y-axis there still is the force of gravity. Or are you saying that my time i computed for the Y values won't work for my X values?

[SOLVED] Kinematics in two dimensions problem Homework Statement Chapter 3, Problem 20 Incorrect. A car drives horizontally off the edge of a cliff that is 48.1 m high. The police at the scene of the accident note that the point of impact is 195 m from the base of the cliff...

thanks for all the help everyone

good point about the ratio, but I'm still confused why I'm going to have a negative number for t, or would this not matter anyways?

[SOLVED] Acceleration/Velocity Problem Homework Statement Two students, Anne and Joan, are bouncing straight up and down on a trampoline. Anne bounces 2.61 times as high as Joan does. Assuming both are in free-fall, find the ratio of the time Anne spends between bounces to the time Joan...