Need with this one ! worth 30 ! : )

The valve seat performs two functions: it provides a seal for the valve in the combustion chamber, and it provides a cool surface to carry heat away from the valve. most valves use a seating angle.

An object accelarates from rest to a velocity of 2.4m/s over a distance of 16m what was its accelaration

Stereotypes can influence the way we think about a specific group of people. this is especially common in racial and ethnic group, but it is not reserved specifically for those groups. stereotypes can also apply to school groups, cliques, and neighborhoods. a stereotype is similar to which of the following terms: a)feature detectors b)texture gradient c)perceptual set d)stereogram e)relative clarity