Stars in binary systems can transfer matter from one star to another at a Lagrange point
a. True
b. False
Indicate whether the statement is true or false
True
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The change in the direction of a wave resulting from its encountering a small slit is known as
a. interference. b. diffraction. c. reflection. d. polarization.
Elliptical galaxies
A) tend to be smaller than the other types of galaxies. B) have little in the way of dust and gas. C) are thought to be former starburst galaxies. D) All of the above
Show that the temperature distribution in a sphere of radius ro, made of a homogeneous material in which energy is released at a uniform rate per unit volume Gq, is
GIVEN
- A homogeneous sphere with energy generation
- Radius = ro
FIND
- Show that the temperature distribution is as shown above.
ASSUMPTIONS
- Steady state conditions persist
- The thermal conductivity of the sphere material is constant
- Conduction occurs in the radial direction only
SKETCH
A one-meter-thick lead plate can provide protection from a, b, and radiation
What will be an ideal response?