The rate of flow of electric charge is measured in units called ______________
Fill in the blank(s) with correct word
amperes
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The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III
?
The object’s velocity is positive in region(s)
a.
I.
b.
II.
c.
III.
d.
no regions
A nonprismatic cantilever bar has an internal cylindrical hole of diameter d/2 from 0 to x, so the net area of the cross section for Segment 1 is (3/4)A. Load P is applied at x, and load 2P/2 is applied at x 5 L. Assume that E is constant. The length of the hollow segment, x, required to obtain axial displacement ? 5 PL/EA at the free end is:
(A) x 5 L/5
(B) x 5 L/4
(C) x 5 L/3
(D) x 5 3L/5
A speedy tortoise can run with a velocity of 10.0 cm/s and a hare can run 20.0 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.00 minutes. The tortoise wins by a shell (20.0 cm). What was the length of the race?
A 5.0-liter gas tank holds 1.4 moles of helium (He) and 0.70 moles of oxygen (O2 ), at a temperature of 260 K
The atomic masses of helium and oxygen are 4.0 g/mol and 16.0 g/mol, respectively. Avogadro's number is 6.022 × 1023 molecules/mol and the Boltzmann constant is 1.38 × 10-23 J/K. The total random translational kinetic energy of the gas in the tank is closest to A) 6.8 kJ. B) 6.1 kJ. C) 7.6 kJ. D) 8.3 kJ. E) 9.1 kJ.