Multiple choice

Which of the following is NOT found in the Milky Way galaxy’s galactic halo?

A. A few lone stars
B. Dark matter
C. Some star clusters
D. The sun

Which of the following is the correct order of the components of the Milky Way galaxy from outermost to innermost

A. Thick Disc, thin disc, extreme disc, galactic halo, black hole

B. Thing disc, extreme disc, thick disc, galactic halo back hole

C. Galactic halo, thick disc, thing disc, extreme disc, black hole

D. Extreme disc, thick disc, thin disc, galactic halo, black hole

Study the following reaction carefully. what classification should this reaction have? 4al + 3o2 2al2o3synthesisdecompositionsingle replacementdouble displacement

In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i. e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?

Gunpowder residue is most likely to show up where on a shooters hands