Recent content by BryceHarper

I'm dumb haha. Thanks!

The current in an inductor when energy is stored. Please help! Homework Statement What's the current in a 15mH inductor when the stored energy is 42μJ Homework Equations E = 1/2 L i^2 The Attempt at a Solution .000042J = (.5)(.015H)(i^2) .000042J = (.0075)(i^2) .0056 =...

Homework Statement The current in a series RL circuit increases to 20% of its final value in 3.4μs. If L = 2.0mH, what is the resistance R? Homework Equations I=I_0(1-e^(-t/(L/R))) <----Im not sure if this equation is right? The Attempt at a Solution I'm unsure how to start...

Ahhhh okay, I got it now. Thanks!

J/mol*K

Should I**

Should use N/m^2 rather than atm?

Homework Statement A rigid container holds 2.80 mol of gas at a pressure of 1.20 atm and a temperature of 60.0 degrees Celsius. What is the container's volume? Homework Equations PV=nRT The Attempt at a Solution (2.80*8.31*333)/1.20 = 6457m^3 This answer seems way too big...

I ended up using all my attempt on mastering physics and the answer ended up being 3.74m but I still don't know how to come up with that value?

Homework Statement The spring in the figure has a spring constant of 1000 N/m. It is compressed 13.0 cm, then launches a 200 g block. The horizontal surface is frictionless, but the block's coefficient of kinetic friction on the incline is 0.220. What distance does the block sail through the...

Got it! Xmax is equal to 1.8m Thanks for the help Villyer!

Whoops! I guess I was so excited to have finally figured it out that I wrote the equation wrong lol. To verify mg(4+Xmax)sinθ=1/2k(Xmax)^2 So... 1/2k(Xmax)^2 - mgsinθ(Xmax) - mg4sinθ = 0 And then use quadratic equation to solve for Xmax?

Ohhhhhhhhh! So i should do: 1/2(4+Xmax)sinθ=1/2k(Xmax)^2 ?

The spring is laying on the ramp and the 4m refers to the distance it slid along the ramp.

Homework Statement A 11 kg box slides 4.0 m down the frictionless ramp shown in the figure , then collides with a spring whose spring constant is 190 N/m. The angle of the ramp is 30°. What is the maximum compression of the spring? Homework Equations Ei=mgh Ef=1/2kx^2 The Attempt...