Samantha is observing a salt crystal under a microscope. she wants to view more details by enlarging the image of the crystal. which would allow her to do this?
a)increasing the amount of light that shines on the crystal
b)decreasing the amount of light that shines on the crystal
c)increasing the strength of the objective lens
d)decreasing the strength of the objective lens

What is the speed of an object at a given moment?

Why does gravity have a lesser than grater effect on higher altitudes?

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)