(1) The study of seismic (earthquake) waves has provided most of what we know about the interior of the earth. (2) The seismic waves change direction and speed as they encounter different materials. (3) With this information, scientists have been able to subdivide the Earth into layers. (4) The composition of the Earth is also supported by data from the study of meteorites. (5) Meteorites are pieces of asteroids that have broken off and enter Earth's atmosphere. (6) The meteorites have a similar composition to what is believed to be in the earth's interior. (7) It is also thought that the asteroids the meteorites broke off from were formed at the same time and in the same way as the planets in the solar system. Which sentences provide evidence for the internal structure of the earth? Question 11 options:
1 and 3
2 and 6
4 and 7
3 and 5

Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f.s. = 2 against bucklin

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point