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Answer to Question #142216 in Physics for Kiara
Question #142216
1. A 50 kg sled sits motionless on a ramp with a slope of 15o. What is the force of friction on the sled?
(a) 47 N
(b) 127 N
(c) 155 N
(d) 490 N
Expert's answer
"F=mg\\sin{15}\\\\F=(50)(9.8)\\sin{15}=127\\ N"
Answer: (b) 127 N
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The star Pax has four planets orbiting it. The planet Morana lies 17 AU away from Pax and takes 32 Earth years to orbit Pax. The planet Noveria lies 3.5 AU away from Pax. How long does it take Noveria to orbit Pax? You do not need to convert AU to meters or years to seconds to solve this problem. (a) 0.72 years (b) 1.35 years (c) 1.74 years (d) 2.99 years
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