What Is the Change in Area (In Cms1u1p12s1s1p0)of a 60.0
What is the change in area (in cm2)of a 60.0 cm by 150 cm automobile windshield when the temperature changes from 0 C to 36.0 C.The coefficient of linear expansion of this glass is 9.0 106/C.
Angela claims that she wears a cylindrical-shaped hollow gold bracelet because it expands less than a solid one with a change in temperature.Clarissa claims that a cylindrical-shaped solid gold bracelet expands less than a hollow one.Which one,if either,is correct?
A)Angela,because the bracelet expands outward on its outer surface and inward on its inner surface.
B)Clarissa,because the bracelet expands outward on its outer surface and inward on its inner surface.
C)Angela,because the inner circumference does not change,but the outer circumference expands.
D)Clarissa,because the inner circumference does not change,but the outer circumference expands.
E)Neither,because both the inner and outer circumferences increase in length.
When the coefficient of linear expansion,,and the temperature change,Tf Ti,are large,a length Li of a solid substance expands in length to
A)Lf = Li(Tf - Ti).
B)Lf = Li[1 + (Tf - Ti)].
C)Lf = Li[1 + ln((Tf - Ti))].
A square plate has an area of 29.00 cm2 at 20.0C.It will be used in a low temperature experiment at T = 10.0K where it must have an area of 28.00 cm2.What area must be removed form the plate at 20.0C for it to have the correct area at 10.0 K? (The coefficient of linear expansion is 10 106 (C)1. )
A)0.079 3 cm2