Escape from a damaged submarine
Crew members attempt to escape from a damaged submarine 70 m below the surface. What force must they apply to a pop-out hatch, which is1.0 m by 0.70 m, to push it out at that depth? Assume that the density of the ocean water is 1025 kg/m3.
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To a man walking with a speed of 2 m/s, the rain appears to fall vertically. If the velocity of rain is 4 m/s, calculate its direction with respect to the direction of man's velocity.
In testing the difference between the means of two normally distributed populations using large independent random samples, the alternative hypothesis indicates no differences between the two specified means.
Compute the equations of streamlines that pass through (x,y)= (0,0), (2,2), (-1,-1) and (0,2). Plot these streamlines over -3 < x < +3. Plot several selected velocity vectors to clearly show the flow behavior.
Air in a cylinder is compressed reversibly and isothermally from 95 kPa, 25 o C to 290 kPa. The initial volume is 0.162 m3. Determine the work input, the heat transfer, and the entropy change of the air being compressed.
A simple open U-tube contains mercury. When 5.9 cm of water is poured into the right arm of the tube, how high above its initial level does the mercury rise in the left arm?
When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes are observed, Find the wavelength of the light used. Please explain step by step.
Three liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are 0.45 L, 2.6 g/cm3; 0.30 L, 1.0 g/cm3; and 0.40 L, 0.95 g/cm3. What is the force on the bottom of the container due to these liquid
For a sample of readers, she collected the sample information in the following table. Indicate your hypotheses, your decision rule, your statistical and managerial conclusion/decisions. At ? =.05 are type of community and first section of newspape
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Student researchers, Louis and Armand, discover they need additional funding to further their research on substance usage and depression.
Compose a comprehensive definition of "substance abuse" and "substance addiction". Looking at the definitions, where is there overlap between the two?
Despite the growing body of research examining psychological and relational strain and resilience associated with expatriate long-distance marital separation
Recent advances in brain research have provided important information about factors that affect the development of adolescents' brains.
Problem: Kaan is a communications major who is interested in studying the link between conflict and anxiety in the classroom.
Problem: Relate Piaget's theory of adolescent cognition to adolescent behaviors seen today (choose two examples).
Question: What final condition must be met in order to smile, laugh, and appreciate a joke?