1. The motion of a vibrating particle is defined by the position vector r = 10(1 – e-")i+ (4e-24 sin 15t)j, where r and t are expressed in millimeters and seconds respectively. Determine the velocity and acceleration when (a) t 0, (b) t = 0.5 s.

Hi I am confused on how to do this problem. I would really appreciate the help.

Please help me solve 1,2,3 and 4!

1. Consider a branching pipeline system with diameter of 3ft where each pipe has a length of 5000ft. Assume friction factor =0.02 and that both pumps are identical. Pump characteristics are shown in the table below. Assume water surface elevations for the reservoirs are A=80ft, D=94ft. If the discharge in pipe BC is 20ft/s (with flow from B to C), what is (A) discharge in AB and BD? (b) Water surface elevation in reservoir C? and (C) Head added by each pump? Q (cfs) Hp (ft) 70 10 68 20 64 30 57 40 47 50 35 60 23

Xxccj

зх 2 3x7x-2 8 X - X dx

PLS SHOW COMPLETE ANSWER. THANK YOU

solve the problem in the picture, please