In the case of alpha decay, the atomic number of the nucleus increases
a. True
b. False
Indicate whether the statement is true or false
False
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Write an appropriate dimensionless correlation for the average Nusselt number for these data and state any limitations to your equation.
Suppose that the graph below shows measured values of hc for air in forced convection over a cylinder of diameter D plotted on a logarithmic graph of NuD as a function of ReDPr.
GIVEN
Forced convection of air over a cylinder
Experimental data given above
FIND
An appropriate dimensionless correlation for the average Nusselt number
A catapult fires an 800-kg rock with an initial velocity of 100 m/s at a 40° angle to the ground. The magnitude of the horizontal impulse the catapult receives from the rock is
a. 5.1 × 10^4 N s. b. 6.1 × 10^4 N s. c. 8.0 × 10^4 N s. d. 5.0 × 10^5 N s. e. 6.0 × 10^5 N s.
If a galaxy has a radial velocity of 8000 km/sec and the Hubble constant is 70 km/sec/Mpc, what is the distance to this galaxy?
a. 8.75 x 103 Mpc b. 2.4 x 109 Mpc c. 5.6 x 105 Mpc d. 114 Mpc e. 8.75 x 10-3 Mpc
Which one of the following cannot be a statement of Gauss's law for some physical situation?
A.
B.
C.
.D.
.E.
.