Ray diagrams may be drawn to determine the characteristics of an image produced from a lens or mirror. When the lens produces light rays that are parallel, the image is Question 16 options:

between F & 2F on the other side as object

F on the other side as object

non-existent

at infinity

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.