Problem 2 [o 1,021 a steel tube having k = 46 w/m-c has an inside diameter of 3.0 cm and a tube wall thickness of 2 mm. a fluid flows on the inside of the tube producing a convection coefficient of 1500 w/m2-oc on the inside surface, while a second fluid flows across the outside of the tube producing a convection coefficient of 197 w/m2-oc on the outside tube surface. the inside fluid temperature is 223 c while the outside fluid temperature is 57 c. calculate the heat lost by the tube per meter of length.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

you need to stop taking that class

b.false that your answer

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.