Recent content by tbomber

]a bullet that is dropped will not fall on its side, nor will it fall straight down. it will tumble through the air. gravity pulls the same on any object, but the force of air resisting gravity changes. It is the coefficients of drag that determine the vertical (and horizontal) force of...

fixed... sorry bout that :D

"The coefficients of friction are u_s = 0.40 (static) and u_k = 0.30 (kinetic) between all surfaces of contact. Determine the force P for which motion of the 60-lb block is impending if cable AB (A) is attached as shown, (B) is removed." (sorry the image is blurry, i took it on my camera...

"The coefficients of friction are u_s = 0.40 (static) and u_k = 0.30 (kinetic) between all surfaces of contact. Determine the force P for which motion of the 60-lb block is impending if cable AB (A) is attached as shown, (B) is removed." http://img.photobucket.com/albums/v1...06-07_1844.jpg...

so does that mean for A and B I'm only finding the electric field for the inside and outside cylinders, respectively?

Two long, charged, concentric cylinders have radii of 3.0 and 6.0 cm. The charge per unit length is 4.8 10- 6 C/m on the inner cylinder and -8.0 10-6 C/m on the outer cylinder. Find the electric field at (a) r = 4.0 cm and (b) r = 7.1 cm I know how to find the electric field for...

oh woops, misread the question slightly: at the lowest point the momentum is 7kg m/s... and at it's highest points it's 15. So the equation of motion i have in mind then is: vf = vi + a*t since that's the only one that disregards distance... Now my next question then is how do we...

ahhh. now to find the vertical component of the velocity am i using conservation of energy? .5mv^2 = mgh? If so, how do i determine the mass of the object? and woops oin the title... is it possible to change it?

Need help w/ Momentum & equation of motion please I was completely dumbfounded when i first read the question... How can a momentum problem like this ask for such a specific thing as the angle with which the object departed the ground? "At time t = 0, a ball is struck at ground level and...

"A block of mass m1 = 2.4 kg slides along a frictionless table with a speed of 10 m/s. Directly in front of it, and moving in the same direction, is a block of mass m2 = 4.6 kg moving at 2.8 m/s. A massless spring with spring constant k = 1160 N/m is attached to the near side of m2, as shown in...

ah, found it! thanks for the help Doc

its a measure of the efficiency of a structure - normally associated with things like bridges. It compares the weight of the structure itself to the amount of weight it can carry/support without collapsing. For example the miniature wood-stick bridges you build at school will have a very...

similar question: What is the spring constant of a spring that stores 25 J of elastic potential energy when compressed by 6.0 cm from its relaxed length? I've tried using N*m = J (work) to find my Newtons and dividing by the distance: N*0.06m = 25J N = 25 / 0.06 N = 416.667 N/m =...