If energy is carried by the bulk motion of matter, that is called ____________________
Fill in the blank(s) with correct word
convection
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Rotational Kinetic Energy: The L-shaped object shown in the figure consists of three small masses connected by extremely light rods. Assume that the masses shown are accurate to three significant figures. How much work must be done to accelerate the object from rest to an angular speed of 3.25 rad/s (a) about the x-axis, (b) about the y-axis?
Fill in the blank(s) with the appropriate word(s).
Silver has a Fermi level of 5.5 eV. At 0 K, what is the speed of the electrons with the Fermi speed?
A) 1.4 × 106 m/s B) 1100 m/s C) 2200 m/s D) 0 E) 1.1 × 106 m/s
Pulsars are rapidly spinning
A) regular stars like our Sun. B) red giant stars. C) neutron stars. D) white dwarfs. E) supernova.
Approximately how many extrasolar planets have been discovered to date?
A) tens B) hundreds C) thousands D) millions E) billions