Question

A table of the specific heats of several materials is listed below.

Material	Specific heat C (J/kg degree C)
Water	4184
Beryllium	1825
Wood	1400
Aluminum	900
Glas	753
Silicon	705
Stainless Steel	502
copper	386
Brass	381
Germanium	320
Silver	235
Gold	129
Lead	129

1. Suppose that after you measure the specific heat Cs of the brass sample, you repeated your measurements with another brass sample, of twice the mass. What result would you expect, and why?

2. Rewrite Eq. (3.1) (Ms cs (Ts-Tf)=Mc Cc (Tf-T0) so that it is in the form Cs=....

3. Suppose you want to find the intersecion (x,y) fo two straight lines,

y=m1x+b1

y=m2x+b2

You are given values for the slopes m1 and m2, as well as for the intercepts b1 and b2. At the point where the lines intersect, both lines will have the same values of x and y. For this point of intersection, solve the pair of equations shown above to eliminate x. Your final result should be an dexpression y=... Where the right hand side depends only on M1, m2, b1, and b2.

4. ORDER OF MAGNITUDE ESTIMATION; supposed tha you drank 16 oz. of an ice- cold soft drink. If your body were unable to adjust its own temperature, how much woudl your body temperature decrease?

-State which physcial quantities are applicable.

-State your assumptions clearly (Hint: what is your body mostly made of?)

-Write down an appropriate formula.

-Show your calculations and a result.

Answer 1