Physics, 20.02.2020 08:38 SketchWasTaken
John is going to use a rope to pull his sister Laura across the ground in a sled through the snow. He is pulling horizontally with a constant force of 400 N. John and manages to get the sled going from 0 to 4 m/s in 5 s. The force due to friction on the sled is 310 N. What is the mass of Laura and the sled combined?
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As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?
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What structural formula represents 4 electrons shared between two atoms?
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If the area of a square has increased by a factor of 16, by how much has each side increased?
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John is going to use a rope to pull his sister Laura across the ground in a sled through the snow. H...
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