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YouTubeBretton Ferguson
The Sinking of the Laconia: Survivors Stories
BBC Interviews with survivors of the Laconia sinking. Following the story of the sinking of the Cunard Liner Laconia in World War II through the personal testimonies of six survivors. After being torpedoed by Germans and bombed by Americans, these survivors endured five days in a lifeboat with dwindling rations until they were rescued. 69 other ...
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Plane waves in water of 100  Pa effective (rms) pressure are incident normally on a sand bottom. The sand has density 2000  kg / m^3 and sound speed 2000  m / s. (a) What is the effective pressure of the wave reflected back into the water? (b) What is the effective pressure of the wave transmitted into the sand? (c) What is the power reflection coefficient? (d) What is the smallest angle of incidence at which all of the incident energy will be reflected? | Numerade
Plane waves in water of 100  Pa effective (rms) pressure are incident normally on a sand bottom. The sand has density 2000  kg / m^3 and sound speed 2000  m / s. (a) What is the effective pressure of the wave reflected back into the water? (b) What is the effective pressure of the wave transmitted into the sand? (c) What is the power reflection coefficient? (d) What is the smallest angle of incidence at which all of the incident energy will be reflected? | Numerade
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