Physics, 05.07.2019 01:20 samantha9430
Achild of mass 3m sits on a swing, the base of which has mass m, while the rope (of length l) q34. has a negligible mass. an adult pulls back the swing (with the child) until the rope makes an angle of half-a-radian with the vertical, and, then, pushes with a force mg along the arc of a circle until the rope is exactly vertical and releases it. if the rope was always taut, for how long did the adult push? 20 (а) л 3g 20 (d) 3g (b) 3 g g q49. two tuning forks with natural frequencies v, and v, respectively, are struck at the same time with equal force. the intensity, of the resulting sound, waxes and wanes with time period of 1.5 seconds while the frequency of the sound is 256 hz. hence v, and v, respectively are (a) 256.333 hz and 255.667 hz (b) 256.55 hz and 255.55 hz (d) 256.5 hz and 257 hz (c) 256 hz and 256.5 hz
Answers: 2
Physics, 22.06.2019 04:20
Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?
Answers: 2
Physics, 22.06.2019 07:00
World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s
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Physics, 22.06.2019 07:40
How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.
Answers: 3
Achild of mass 3m sits on a swing, the base of which has mass m, while the rope (of length l) q34. h...
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