Physics, 16.10.2019 01:30 Gabriel134
Describe the force board experiment to show how to obtain the resultant of two non-parallel coplanar forces acting at a point. four forces of magnitude 10n,5n,4n and 6n on an object in the directions north, west, east, and south respectively. find the magnitude and direction of their resultant
Answers: 2
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Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)
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What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%
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Describe the force board experiment to show how to obtain the resultant of two non-parallel coplanar...
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