Recent content by WPCareyDevil

Homework Statement An ideal spring has a spring constant k = 30 N/m. The spring is suspended vertically. A 1.1 kg body is attached to the unstretched spring and released. It then performs oscillations. (a) What is the magnitude of the acceleration of the body when the extension of the...

Thank you so very much! I was able to figure it out after a bit of tweaking. This place is the best =D. I've tried to go through answering peoples questions- but I find that I either cannot answer them well enough, or someone has already beat me to it. I'll try to give back as much as I can

Thats what did it for me. Thank you so much!

Ahh, you're right. That makes sense - I didnt think of that. I tried using -13.27, and subtracting 9.8. What am I missing with the calculation? Thank you for the tip!

Homework Statement You are standing on a bathroom scale inside an elevator. Your weight is 160 lb, but the reading of the scale is 123 lb. (a) What is the magnitude and direction of the acceleration of the elevator? ? m/s2 (b) Can you tell whether the elevator is speeding up or slowing...

Homework Statement An 85.0-N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 27.0° to the ground. (a) What is the normal force exerted on the crate by the ramp?(b) The interaction partner of this normal force has what magnitude...

Ok, making progress here.I split each of the two vectors up as right triangles with HypA=3.6, HypB=5.9 Ax will =Ay and Bx will = By, because they are 45/45/90 triangles. Ay+Ax=5.0912 By+Bx=8.3486 But those two numbers do not yield the correct answer in the formula either (9.774473). What am...

Thank you for the reply! Ok, I now understand that I need to calculate the x and y components of each vector. By=4.1719 Bx=[sin(45)=3.6/x]=2.5456 Ay=[sin(45)=x/3.6]=2.5456 A=[cos(45)=x/3.6]=2.5456 Therefore A=5.09117, B=6.7175 However, when I plug this into the equation I get an incorrect...

Homework Statement Vector \vec{A} has magnitude 3.6 units; vector\vec{B} has magnitude 5.9 units. The angle between A and B is 45°. What is the magnitude of \vec{A} + \vec{B}? Homework Equations \DeltaV= \sqrt{V^2x +V^2y} "SohCahToa" The Attempt at a Solution I am really...

Homework Statement A stone is launched straight up by a slingshot. Its initial speed is 19.8 m/s and the stone is 1.40 m above the ground when launched. Assume g = 9.80 m/s2. (a) How high above the ground does the stone rise? wrong check mark m (b) How much time elapses before the stone...

Thanks guys! I have been working on this all day and I've just about got it. It makes perfect sense now!

[SOLVED] hand rule application (dir of mag force) Homework Statement You witness an experiment with a wire (a part of a circuit) and a horseshoe magnet. It begins with a wire laying on a table and passing through the mag field of the horseshoe magnet, but with no current passing through the...

Ah hah! I googled around and found Planck's constant as well as the formula e=hv where v is the frequency. That was something I didnt learn in class at all. Thanks for the help Alphysicist!

Well I have done some research and Gamma particles are elctromagnetic radiation (light emission).. E=mc^2 obviously comes to mind, and I could find the mass of the particle, but how does frequency factor in? I used d=vt because of the t (t^-1=frequency). It was a long shot and didnt make sense...

[SOLVED] (101)Gamma frequency? Homework Statement A gamma particle of energy 4.5 MeV is detected as a product of some nuclear reaction (4.5 MeV is 0.72 pJ). What is the frequency of this gamma radiation? Homework Equations ? The Attempt at a Solution I tried using d=vt because it...