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...
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?
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...