Two forces of F → 1 = 75.0 2 ⎛⎝ i ^ − j ^ ⎞⎠ N and F → 2 = 150.0 2 ⎛⎝ i ^ − j ^ ⎞⎠ N act on an object. Find the third force F → 3 that is needed to balance the first two forces.

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Select all the correct answers. which three statements about electromagnetic radiation are true?

A6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. what is the speed of the cart at the end of this 3.0 second interval? (1) 1.5 m/s (3) 3.0 m/s (2) 5.5 m/s (4) 7.0 m/s