Recent content by physics_geek

for k i got 1.742 x 10^5 what did you get?

well k wouldn't it just be (2pif)^2(M+m) so at the end we would get delta_x = mg/((M+m)(2pif)^2) = .016m ??

Homework Statement Four people, each with a mass of 71.7 kg, are in a car with a mass of 1150 kg. An earthquake strikes. The driver manages to pull of the road and stop, as the vertical oscillations of the ground surface make the car bounce up and down on its suspension springs. When the...

well what i did was vmax = sqrt(k/m)A (v^2/A^2)m = k so m = kA^2/v^2 but i guess this is wrong so do i use something like 1/2kA^2 = 1/2mv^2 ?

Homework Statement A block of unknown mass is attached to a spring with a spring constant of 5.50 N/m and undergoes simple harmonic motion with an amplitude of 12.5 cm. When the block is halfway between its equilibrium position and the end point, its speed is measured to be 25.0 cm/s. (a)...

you are a genius! thanks for clearing that up but now using the x value how do i find Emax?

so that would leave us with 3a+3x(a^2+x^2)^3/2(kex) - ke(a^2+x^2)^3/2 = 0 ? wat abt the Q in the original equation im not very good at calculus so this is pretty tough for me

yes i applied the quotient rule but it gets extremely confusing..i end up with an answer like (a+x)(a+x) =0 which I am pretty sure is incorrect

Homework Statement Determine both the location and the maximum magnitude Emax of the electric field along the axis of a uniformly charged ring. (Use epsilon_0 for ε0, Q, and a as necessary.) Homework Equations dE= k_edq/r^2costheta costheta= x/r The Attempt at a Solution i think...

nvm..i got part b thanks for your help

ok yea it was -.0579 I am sorry do you know how to do part b?

Homework Statement The deepest point in any ocean is in the Mariana Trench, which is about 11 km deep, in the Pacific. The pressure at this depth is huge, about 1.13 108 N/m2. (Take the bulk modulus of seawater to be 2.34 109 N/m2) (a) Calculate the change in volume of 1.2 m3 of seawater...

Homework Statement A particle is located at the vector position =(4.00i + 5.00j) m and a force exerted on it is given by =(2.00i + 1.00j) N. a. What is the torque acting on the particle about the origin? b. Consider another point about which the torque caused by this force on this particle...

yea thanks a lot! i think i got it

Homework Statement A solid sphere is released from height h from the top of an incline making an angle θ with the horizontal. (a) Calculate the speed of the sphere when it reaches the bottom of the incline in the case that it rolls without slipping. (Use g,h, and theta for θ as necessary.)...