PreparED Study Materials
PHYS 162: Elementary Astronomy
School: Northern Illinois University
Number of Notes and Study Guides Available: 0
Videos
Solving Acceleration & Deceleration Queries for a Commuter Train Expla
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the physics of a light-rail commuter train's motion. Understand how to calculate times for acceleration and deceleration using the equations of motion. Dive into the concept of emergency deceleration and its implications.
Hotel Peephole Lens: Achieving a 180-Degree View Through Refraction
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Uncover the fascinating science behind peephole lenses, including the principles of light refraction and observer positioning that allow for an extensive field of vision through a hotel room door.
Electric Potential at Circle Center with Symmetric Charges
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the fascinating world of electric potential as we calculate the value at the center of a circular arrangement of five equally charged particles. Join us for a captivating journey into electrostatics and symmetry in this enlightening video.
hysics of a Coin Drop in an Ascending Elevator
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In an elevator ascending, an occupant drops a coin, which accelerates at a different rate than expected. This reveals the elevator's own acceleration towards the Earth. By analyzing forces and tensions, we determine the cable's tension to be 16000 N.
Earth's Measurements: Circumference, Surface Area, and Volume
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore Earth's dimensions in this video! We calculate its circumference, surface area, and volume. Join us to understand the scope of our planet, both in its physical size and mathematical concepts.
Calculating k, Amplitude & Frequency for Fisherman's Scale
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video we tackle the real-world physics problem of calculating the spring constant for a fisherman's scale along with the amplitude and frequency of its vibrations when a fish is added. We use Hooke's Law to find the spring constant and then apply oscillation formulas to determine the amplitude and frequency of the fish's vibrations














