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Q. The mass of a robot is 5740 kg. This robot weighs 3720 N more on planet A than it does on planet B. Both planets have the same radius of 1.33 multiplied by 107 m. What is the difference MA - MB in the masses of these planets?

Q. A 180 g block on a 49 cm-long string swings in a circle on a horizontal, frictionless table at 74 rpm.

(a) What is the speed of the block?
(b) What is the tension of the string?

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Category:- Physics
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