7. A thermometer reading 75°F is taken out where the temperature is 20 °F. The reading is 30 °F after four minutes. Find a) the thermometer reading 7 minutes after the thermometer was brought outside, and b) the time taken for the reading to drop from 75 °F to within a half degree of the air temperature or 20.5 °F. 8. A tank contains 200 liters of fresh water. Brine containing 2.5 N/liter of dissolved salt runs into the tank at the rate of 8 liters/min and the mixture kept uniform by stirring runs out at 4 liters/min. Find the amount of salt when the tank contains 240 liters of brine. The concentration of salt in the tank after 25 minutes amounts to how much?

Q: Calculate A) the net moment of force about the attachment point at "O" and B) the net force on the…

A: Given data: F1=100 NF2=250 NF3=200 N Need to determine the net force and moment at point O.

Q: What is the weight of 3 slug, expressed in pounds-force? 96.522 lbf

A:

Q: A hydraulic jack has a 2-inch diameter input piston and a 2-inch diameter output piston. If a 300 lb…

A:

Q: Build the following part. Report the mass in pounds. Assume all dimensions are in inches. The…

A: It is asked to find the mass of the model from the given dimensions Material: Vanadium

Q: What is the weight of 12 kilogram object, expressed in lbf? 26.424 o lbf

A: Recall:- 1 kilogram = 2.20462 lbf  Weight of the object (W) = 12 kilogram

Q: If FB = 560 N and Fc = 700 N, determine the magnitude and coordinate direction angles of the…

A:

Q: 5 lb lb 2 lb 35⁰ B Resolve the 5 lb force, F, into a component along OA and a component along OB,…

A: Given data:- Force F= 5 lb where OA is inclined =35° from horizontal,  OB descends 3 feet vertically…

Q: 1- One millivolt is one millionth of a volt. (a) True (b) False

A:

Q: So would F12 and F13 both be equal to .5?

A: Here you asked , would F12 and F13 both be equal to .5

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.