What mass would have to be condensed to a radius of 1.0 × 10-15 m (the order of magnitude of the radius of an atomic nucleus) in order for it to become a black hole? G = 6.67 × 10-11 Nm2/kg2
A) 1.1 × 10-6 kg
B) 4.1 × 10-8 kg
C) 2.2 × 103 kg
D) 6.7 × 1011 kg
E) 8.3 × 1015 kg
D
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Why can't we see back the whole way to the Big Bang?
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Perhaps the most fundamental role that enzymes play in living cells is
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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