What is the equivalent resistance between points a and b when R = 30 ??
a.
27 ?
b.
21 ?
c.
24 ?
d.
18 ?
e.
7.5 ?
d
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Which of the following devices is placed into a circuit to measure the current that passes through it?
a) ammeter b) gaussmeter c) voltmeter d) diffractometer e) flowmeter
What is the binding energy per nucleon for Al? The neutral Al atom has a mass of 26.981539 u; a neutral hydrogen atom has a mass of 1.007825 u; a neutron has a mass of 1.008665 u; and a proton has a mass of 1.007277 u. 1 u = 931.494 MeV/c2
A) 8.3 MeV B) 6.7 MeV C) 5.4 MeV D) 3.4 MeV E) 2.8 MeV
On a position-versus-time graph, the slope of the straight line joining two points on the plotted curve that are separated in time by the interval ?t, is which of the following quantities?
a. average steepness b. average velocity c. instantaneous velocity d. average acceleration
In the relativistic case, doubling the speed of an electron causes its wavelength to
A) double. B) more than double. C) halve. D) decrease to less than one-half. E) quadruple.