Energy Conservation With Conservative Forces: A toy rocket that weighs 10 N blasts straight up from ground level with an initial kinetic energy of 40 J. At the exact top of its trajectory, its total mechanical energy is 140 J. To what vertical height above the ground does it rise, assuming no air resistance?
A. 1.0 m
B. 10 m
C. 14 m
D. 24 m
Answer: B
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Which of the following performance domains includes the athletic trainer's responsibility to educate others?
A. Professional Responsibilities B. Prevention of Athletic Injuries C. Immediate Care of Athletic Injuries D. Clinical Evaluation and Diagnosis
A 1.5-H inductor is connected in series with a 200-? resistor through a 15-V dc power supply and a switch. If the switch is closed at t = 0 s, what is the maximum energy stored by the inductor?
A) 1.2 mJ B) 2.2 mJ C) 3.2 mJ D) 4.2 mJ E) 5.2 mJ
In an electroplating process, it is desired to deposit 40 mg of silver on a metal part by using a current of 2.0 A
How long must the current be allowed to run to deposit this much silver? The silver ions are singly charged, and the atomic mass of silver is 108 g/mol. (e = 1.60 × 10-19 C, NA = 6.02 × 1023 atoms/mol) A) 16 s B) 18 s C) 20 s D) 22 s
A grating is made with 600 slits per millimeter. What is the slit separation?
A. 600 nm
B. 
C. 
D. 160 pm
E. 916 nm