Hurry up man! question 27
the air pressure inside an automobile tire is lower during cold weather than during warm weather. the lower air pressure is most likely due to
a
salt on the roads producing a decrease in tire volume.

b
a decrease in the speed of the air molecules in the tire.

c
cold air in the tire producing an increase in tire volume.

d
an increase in molecular potential energy of the air molecules in the tire.

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Which changes of state do the labels represent? a: b: c:

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)