A Dewar flask is a container designed to prevent heat transfer so that its contents remain hot or cold for a longer period of time. It consists of a double-walled container
in which most of the air has been removed from the space between the walls. Some
household thermoses are Dewar flasks. What heat-transfer processes are prevented
by removing the air between the walls?
a. Conduction and radiation
b. Conduction and convection
C. Convection and radiation
D. Conduction , convection , and radiation

i need the answer to this too but idk it ; -;

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.

the answer is a 3.8cm

explanation:

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.