Herbig-Haro objects are extra solar planets
Indicate whether the statement is true or false
False
You might also like to view...
Evaluate the dimensionless groups hcD/k, U? Dp/?, cp ?/k for water, n-Butyl alcohol, mercury, hydrogen, air, and saturated steam at a temperature of 100°C. Let D = 1 m, U? = 1 m/sec, and hc = 1 W/(m2 K).
GIVEN
D = 1 m
U? = 1 m/s
hc = 1 W/(m2 K)
FIND
The dimensionless groups
? hc D/k (Nusselt number)
? U? D p/? (Reynolds number)
? cp ?/k (Prandtl number)
PROPERTIES AND CONSTANTS
From Appendix 2, at 100°C
Jupiter's atmosphere looks uniform and calm, with no visible detail
Indicate whether the statement is true or false
The tensile strength of 99.8 % dense sintered alumina is 205 MPa, in comparison to a tensile strength of 125 MPa for 85 % dense sintered alumina. The value of the KIc for the alumina is 4 MPa?m1/2. Compare the defect lengths in these two alumina materials, assuming that the fracture is caused by existing internal cracks.
What will be an ideal response?
An object when orbiting the Earth at a distance of three Earth radii from the center of the Earth has a weight of 2.0 N. What is the object's mass? (g at the surface of the Earth is 9.8 m/s2)
a. 0.10 kg c. 0.92 kg b. 1.8 kg d. 1.0 kg