What is the period of a microwave if its frequency is 2.358,000 Hz?

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?

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Which transition by an electron will release the greatest amount of energy? oa ob oc od