A positron and an electron differ in:
a. spin.
c. mass.
b. charge.
d. energy.
B
You might also like to view...
Use a spreadsheet or write a short computer program to confirm the percent ionic and covalent character of the bonding in Table 2.3.
What will be an ideal response?
Within the mantle, how is heat transported outward away from the core?
A. differentiation B. radiation C. convection D. subduction E. conduction
The photo shows a galaxy known as Arp 220, and the inset shows this galaxy's spectrum. What can you infer?
A) Most of the light from this galaxy is infrared, indicating active star formation. B) Most of the light from this galaxy is visible light, and it comes from an active galactic nucleus. C) The broad peak is a spectral line indicating the presence of massive amounts of hydrogen gas. D) The spectrum peaks in the infrared, indicating that this galaxy has a huge redshift and must be far away.
An automobile engine operates with an overall efficiency of 12%. How much energy is delivered as waste heat (in gallons of gasoline) for each 10 gallons of fuel burned?
a. 1.2 b. 8.8 c. 6.5 d. 4.7 e. 7.5