Recent content by dance_sg

Homework Statement Prove or Disprove: In the equation y=mx+b, b is the y-intercept. The Attempt at a Solution I know that this statement is true, and i know that to prove anything I am suppossed to use a formula, not give examples. but how should i go about doing this if the...

Thank you so much :)

ok so, Fspring= 45N/m(0.08m) whick is 3.6N. then arrange f=ma to solve for a, which is a=3.6N/0.3Kg, so the a is 12. then do i use the formula Vf^2=Vi^2 + 2ad. so,i would square root (2)(12)(0.08) to get 1.4 m/s as the maximum speed?

Homework Statement a 300 g mass vibrates at the end of a horizontal spring along a frictionless surface. if the spring constant is 45N/m, and the maximum displacement of the mass is 8.0cm, what is the maximum speed of the mass? Homework Equations g=Gm/r^2 The Attempt at a Solution...

Homework Statement what is the gravitational attraction between two students with masses of 70 kg and 50 kg, if they are 1.5 m apart? Homework Equations Fg=Gm1m2/r^2 The Attempt at a Solution so my Fg is 6.67 x 10^-11, m1 is 70 kg and m2 is 50 kg. for my radius, do i just use the 1.5...

Homework Statement (-3x^2-15x-12)(√5) Homework Equations Quadratic formula? The Attempt at a Solution hmm, i know how to solve the first set of bracets, but what do i do with the radical? how do i multiply it to the polynomial?

sorry. here is the diagram

Homework Statement A 7.50-kg ball is placed on top of a spring with a spring constant of 475 N/m that has an initial length of 35.0 cm (h1). When the ball has reached its equilibrium position, it is supported by both springs at a height of 20.0 cm above the table (h3). If the shorter spring...

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ok. so multiply what i got for the frequency by 3.

ok. so that would be the frequency. in the question tho it says find the next harmonic. how do i do that?

0.750 x 4 then..

so how do i solve for the wavelength then?

so I am multiplying the wavelength by 4...

so divide 0.750m by 4 to find the fundamental frequency? then how would i find the necxt harmoinic?