Aparticle of mass m is acted upon by a net force f. as a result of the force, the particle starts from rest and moves along a curved path for which the acceleration relative to an inertial cartesian coordinate system with an origin at the location where the particle is at rest is given by a = x i^+ yj^+ z k^with x = at, y = b + ct, and z = d where a, b, c, and d are constants. you may assume that the units associated with t are seconds and the units associated with x, y, and z are m/s^2.
(a) what are the units of a, b, c, and d?
(b) determine the velocity and position as functions of time.
(c) if the numerical values of a, b, c, and d are 0.6, 1.8, -0.36, and 0 respectively, plot the path of the particle for 0 s lessthanorequalto t lessthanorequalto 10 s.
(d) when does ymaximum occur and what is its value?

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero

A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?