An astronomical telescope is made with lenses of focal lengths 80.0 and 2.00 cm. What is the barrel length on this telescope?
A. 80.0 cm
B. 82.0 cm
C. 78.0 cm
D. 105 cm
E. 127 cm
B. 82.0 cm
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Genes are organized into long coiled chains called _______________
Fill in the blank(s) with correct word
Consider the following quantities: (1) current, (2) resistance, (3) coil area, (4) wire cross-sectional area, and (5) magnetic field. Upon which of the quantities is the magnetic dipole moment of a current carrying coil dependent?
a) 1 and 5 only b) 1 and 2 only c) 2 and 3 only d) 1, 3, 4, and 5 e) 1 and 3 only
Radioactive Decay: Given that the half-life for radium-226 is 1600 y, how long is the "quarter-life" (that is, the time for the radiation to decay to one-fourth of its initial level)?
Fill in the blank(s) with the appropriate word(s).
In the Bohr model of the hydrogen atom both the energy and orbital angular momentum of the electron are quantized
a. True b. False Indicate whether the statement is true or false