An elevator weighing 10,000. N is supported by a steel cable. Determine the tension in the cable when the elevator is accelerated upward at 3.0 m/s2. (g = 9.8 m/s2)
A) 40. kN
B) 10. kN
C) 7.0 kN
D) 13. kN
E) 11. kN
D
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The star's color index is a quick way of determining its:
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A proton's rest mass is 1.67 × 10^?27 kg. Calculate its total energy when it is accelerated to a speed of 0.80c
a. 1.5 × 10^?10 J b. 1.0 × 10^?10 J c. 2.5 × 10^?10 J d. 2.0 × 10^?10 J e. 7.5 × 10^?10 J
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