What kind of a telescope would have to be put in space to be effective?
a) optical
b) radio
c) reflecting
d) X-ray
e) refracting
Ans: d) X-ray
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A long nonconducting cylinder (radius = 12 cm) has a charge of uniform density (5.0 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the axis of the cylinder
a. 20 N/C b. 27 N/C c. 16 N/C d. 12 N/C e. 54 N/C
The Bohr condition for determining the stable orbits in hydrogen can be explained in terms of ________ for the electron (two words).
Fill in the blank(s) with the appropriate word(s).
The water hole lies between 18 and 21 cm in wavelength in the radio spectrum
Indicate whether the statement is true or false
Making a digital recording of a sound involves
a. analog-to-digital conversion c. electromagnetic waves b. digital-to-analog conversion d. all of the above