A proton (m = 1.7 × 10?27 kg, q = +1.6 × 10?19 C) starts from rest at point A and has a speed of 40 km/s at point B. Only electric forces act on it during this motion. Determine the electric potential difference VB?VA.
A. +8.5 V
B. ?8.5 V
C. ?4.8 V
D. +4.8 V
E. ?17 V
Answer: B
You might also like to view...
Point charges q and Q are positioned as shown. If q = +2.0 nC, Q = ?2.0 nC, a = 3.0 m, and b = 4.0 m, what is the electric potential difference, VA ? VB?
a.
8.4 V
b.
6.0 V
c.
7.2 V
d.
4.8 V
e.
0 V
How would the passengers on the spaceship view our clocks?
A) Time is the same for everyone. B) Our clocks are going fast. C) Our clocks are going slow. D) Our clocks are going at the same rate as theirs. E) They can't see our clocks, but we can see theirs.
A 10-gram wire that is 6.0 m long is under tension. When a transverse wave of frequency 280 Hz travels along the wire, its wavelength is 0.60 m,and its amplitude is 8.4 mm
How much time does it take for a crest of the transverse wave to travel the length of the wire? A) 36 ms B) 31 ms C) 40 ms D) 44 ms E) 49 ms
Find the resonant frequency for a series RLC circuit where R = 10 ?, C = 5.00 ?F, and L = 2.00 mH
a. 998 Hz b. 1.59 kHz c. 2.45 kHz d. 11.3 kHz e. 2.53 kHz