The position of a particle as it moves along the x axis is given by x = 15e-2t m, where t is in s. What is the acceleration of the particle at t = 1.0 s?
a. 22 m/s
b. 60 m/s
c. 8.1 m/s
d. 15 m/s
e. 35 m/s
C
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Three point charges are located on the x-axis. The first charge, 
is at x = -1.00 m; the second charge,
is at the origin; and the third charge, 
is located at x = 2.00 m. Which charge is subjected to the force of greatest magnitude?
A. 
B. 
C. 
D. 
E. 
A rocket engine consumes 450 kg of fuel per minute. If the exhaust speed of the ejected fuel is 5.2 km/s, what is the thrust of the rocket?
A. 42 kN B. 39 kN C. 45 kN D. 48 kN E. 35 kN
Three identical resistors are connected in series to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistors?
A) 12 A B) 36 A C) 4 A D) 24 A E) 6. A
Which of the following facilities are needed to produce a plutonium A-bomb?
A) enrichment plant B) nuclear reactor C) Both of the above. D) a fusion bomb E) All of the above.