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OpenStudy (anonymous):
Josie pulls a bookcase up a ramp to load it into a truck with a force of 66 N. The force moving the bookcase vertically upwards is 23 N as shown in the diagram. What is the angle of the ramp to the ground? A. 18.95° B. 20.39° <- this is what I got C. 70.79° D. 69.92° @mosaic
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OpenStudy (anonymous):
OpenStudy (anonymous):
20.39
OpenStudy (anonymous):
Yay, it's right :)
OpenStudy (anonymous):
oh, I didn't see your choice. I just saw it after post my calculating
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