The Sun has a core in which energy travels outward primarily by radiation
a. True
b. False
Indicate whether the statement is true or false
True
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The law of inertia says that
A) if there is no force on a body, the body will have no acceleration. B) if there is a force on a body, the body will have a changing acceleration. C) if there is a force on a body, the body will have an unchanging velocity. D) if there is no force on a body, the body will have a changing velocity. E) if there is a force on a body, the body will have no acceleration.
In the beta decay of 14C, the existence of the antineutrino was required to maintain
a. energy conservation. b. charge conservation. c. conservation of the number of nucleons. d. all of the above.
A compound that contains water molecules as part of its formula is called
a. a hydrate. b. an anhydride. c. a hydride. d. a hydroxide.
An LRC circuit has R = 15.0 ?, L = 25.0 mH, and C = 30.0 ?F. The circuit is connected to a 120 V (rms) source with frequency 200 Hz
(a) What is the impedance of the circuit? (b) What is the rms current in the circuit? (c) What is the rms voltage across the resistor? (d) What is the rms voltage across the inductor? (e) What is the rms voltage across the capacitor? (f) If the current in the circuit is given by I = I0 sin ?t, the voltage is given by