After a proton with an initial speed of 1.50 × 105 m/s has increased its speed by accelerating through a potential difference of 0.100 kV, what is its final speed? (e = 1.60 × 10-19 C , mproton = 1.67 × 10-27 kg)
A) 3.55 × 105 m/s
B) 8.80 × 105 m/s
C) 2.04 × 105 m/s
D) 4.56 × 105 m/s
E) 1.55 × 106 m/s
C
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The condensation hypothesis proposes that the Moon formed when an object estimated to have been at least as large as Mars smashed into the proto-Earth
Indicate whether the statement is true or false
The unit V is the same as a
A. N/m. B. J/N. C. C/m. D. J/C. E. C/N.
A 1500-kg car traveling at 90 km/h toward the east suddenly collides with a 3000-kg car traveling at 60 km/h toward the south
The two cars stick together after the collision. What is the speed of the cars after collision? A) 8.3 m/s B) 14 m/s C) 17 m/s D) 22 m/s
Two masses are connected by a cord that passes over a pulley as shown in the figure. The pulley and the cord have negligible mass and 
(6.0 kg) moves on a horizontal surface with a coefficient of friction of 0.5, 
(2.0 kg) is suspended vertically. What is the acceleration of 
?
A. 0.0 
B. 3.0
C. 1.0
D. 2.9