September 2016

Please help. I can't find any solution of this problem on the internet. Thank you.

A glass falls from the window of a tall building . The sound of broken glass reaches the same level 3 s later. How high is the window? Assume velocity of sound to be 340m/s

Please help!!! :( I need it before midnight strikes. It's for my hhomework but I'm having a hard time. Thank you.

1. For a parallel RLC circuit, R = 1/3 ohms, C = 0.5 farads, and L = 2/13 henrys. If the
current source of the circuit produces i(t) = 20e^(–3t)sin 2t, find the voltage v at any time t
if v(0) = 2 and v’(0) = 1.5.

2. For a series RLC circuit, R = 4 ohms, C = 0.25 farads, and L = 2 henrys. If the voltage
source of the circuit produces v(t) = 6e
–tcos t, find the current i at any time t if i(0) = 4
and i’(0) = 1.
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(D^6 – 10D^5 + 20D^4 + 50D^3 – 121D^2 – 40D + 100)y = (64x^3)e
^(5x)
(Use Exponential Shift)�

what is the magnitude of the resultant force of the two forces which are perpendicular to each other? the two forces are 20 units and 30 units respectively.

ambigous case of right triangle

Ask ko lang po? Bat wala po kayong Shear and Moment in Frames?

xy' = y + 2 √xy