Consider two sinusoidal current waveforms i1(t) and i2(t). i1(t) has angle phase of θ1 = −45◦ , and reaches its positive peak 0.1875 ms later than the corresponding peak in i2(t). Both currents have a frequency of 1000 Hz. Give the phase angle θ2 for i2(t) in degrees such that −180◦ ≤ θ2 < 180◦ .

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db

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