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- h) The difference in arrival time between wave-packets with centre frequencies of ω1 and ω2 is Δt. What is DM in terms of Δt ?Plot a graph of sin(θi) versus sin(θr) in an application such as Excel. Execute a linear regression fit and display the fit equation as well as the correlation coefficient.3E0, and uHo) and for two 4. For uniform plane wave propagation in (i) ice (o 106 S/m, 8 (ii) seawater (a= 4 S/m, frequencies: (a)f 1 GHz and (b) f= 100 kHz 1 80co, and uo), compute a, ß, A, 8, and p
- 5. Assume an MRI scanner imaging 'H with the following specifications: Bo = 3.0 T. Assume that with the Z-gradient on, the magnetic field strength is B0 at location Z = Zc: a. With a bandwidth of 1500 Hz, what is the gradient strength (G2) that would allow us to image a slice with 0.75 mm thickness? b. Using the gradient calculated in (a), we need to acquire an MR slice with the same slice width and positioned at 2.5 cm above the Z. position (Z = Z. +2.5 cm). What is the required RF excitation pulse center frequency (in MHz) for the slice selection pulse?A spherical power light source of (7.566x10^1) watts is (6.1000x10^-1) metres from a photodiode detector of area (4.70x10^-1) cm². Find the power at the detector, in watts, to 3 sf. Hint find the intensity of the wave at the detector first.