physics

A flea pulls on a puck with force 8 microN at an angle of 75°. Another flea pulls on the puck with force 2 microN at an angle of -45°. (See diagram for angle scale.) Draw vectors on the diagram to scale representing the forces. Carefully add the vectors tip-to-tail. (Use a ruler.) What is the magnitude of the net force on the puck?

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  1. We can't do graphical vector addition for you. We also cannot see your diagram.

    For a numerical answer, add the x and y components separately, then use the Pythagorean theorem for the magnitude.

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  2. (Use the Pythagorean theorem to answer the question.) An airplane takes off going straight west at 340 km/h for 1 hour, then turns and heads south for another hour at 360 km/h before reaching its final destination. What is the airplane's displacement?

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  3. ¯\_ツ_/¯

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