Blaine steps into a ski slope with an angle of 25 degrees. there is a coefficient of kinetic friction of 0.15 between him and the ground. he has a mass of 65kg. questions:
1. write an expression for net force in the x and y directions. be sure to tilt your axis along the incline.
2. Calculate the net force and acceleration in the x- and y- directions.

I would really appreciate it if you can write the steps or at least the formula and the answer. ​

The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)

Why do different substances have diffrent properties

Asquare 1m x 1m plate is shown below. all four of its edges are kept at 0 co. at t=0the temperature distribution is given by: y xtsins n75)=.a) using separation of variables determine the temperature distribution t(x,y,t)along the plate at any time t.b) discretize the heat conduction equation +=22222 txtusing a second-order centered difference scheme for the two second derivatives and a first-order forward euler scheme for the first derivative. using von neumann stability analysis, determine the stability criterion for the proposed discretization scheme in terms of , hand t. solve for the maximum allowable time step tmax