June 13, 2019

Physics Regent Exam, June 19, 2018

3. While taking off from an aircraft carrier, a jet starting from rest accelerates uniformly to a final speed of 40. meters per second on a runway that is 70. meters long. What is the magnitude of the acceleration of the jet?

Let's first determine what we are given. We have initial speed = 0 since the jet starts at rest. We also have a final speed of 40 m/s. We have distance of 70 meters...

April 17, 2019

A photon with an energy of 1.33 × 10−21 joule has a frequency of

(1) 5.02 × 10^13 Hz

(2) 2.01 × 10^12 Hz

(3) 8.82 × 10^14 Hz

(4) 5.30 × 10^34 Hz

Answer and Explanation:

A photon is a particle of light. The formula for the energy of the photon can be found in the Physics Reference Table. It is Ephoton = hf where h is the plank's constant that can be found in reference table as...

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