This chart lists four examples of two objects that are in contact
object 1
example 1 fire
example 2 a metal at 80°c
example 3 the cool ocean
example 4 a tool with a lot of thermal
energy
object 2
air
a metal at 12°c
the warm air
amaterial with little thermal
energy
which statement accurately describes the flow of heat in each example?
heat will flow from object 1 to object 2 in examples 2 and 4, and heat will flow from object 2 to object 1 in examples 1
and 3
heat will flow from object 1 to object 2 in examples 1 and 3, and heat will flow from object 2 to object 1 in examples 2
and 4.
heat will flow from object 1 to object 2 in example 3, and heat will flow from object 2 to object 1 in examples 1, 2, and 4.
heat will flow from object 1 to object 2 in examples 1, 2 and 4, and heat will flow from object 2 to object 1 in example 3.

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Find the steady-state temperature at the center of the plate = /2, = /2) for sums of w from n=1 to n=19 (only odd values). find the value of n for which the change in /2, /2) is less than 1% from the value at the previous n. at this point, we consider the solution converged. does the value of the temperature at the center seem reasonable? in this part, the values of x and y are constant scalar values. you should produce a plot of the value of n on the horizontal and the estimate of the temperature at the center of the plate on the vertical. b. using the value of n (or larger) that resulted in convergence in part (a), create a contourf plot of the temperature distribution across the entire plate. use enough spatial subdivisions to create a useful plot. comment on the results. hint: you need to determine what “x” and “y” values to use to make your t matrix. i recommend using a different number of x and y values. use enough x and y values so that the plot is “smooth”.