PreparED Study Materials
PHYS 139: Stars and Constellation Identification
School: University of Delaware
Number of Notes and Study Guides Available: 1
Notes
Videos
Orbit Altitude: Astronauts Above Planet's Surface
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Embark on a celestial journey! In this video, we calculate the altitude above a distant planet's surface where a starship orbits. Discover how astronauts experience reduced free-fall acceleration and the fascinating dynamics of space travel.
Unraveling Bead Motion: Force, Acceleration & Energy
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the dynamics of a bead under constant force. Understand its acceleration, velocity over time, and how to calculate its kinetic energy. Witness the interplay of motion equations and real-world applications in a simple system.
Track Radius for 5.5g Acceleration: Approximate Value
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Delve into the physics of high-speed tracks and calculate the radius where drivers experience a 5.5g acceleration, exploring the multiple options and their implications.
Critical Angle for Total Internal Reflection
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the magic of total internal reflection in this video! We explore how a ray of light refracts when traveling from glass into water. Find out the critical angle needed for total reflection, preventing any light from entering the water. Dive into the world of optics and refraction.
Car Spring Oscillations: Frequency When Driving Over Bumps Explained!
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the math behind car spring oscillations when driving over bumps. Understand how a car's weight and driver affect the spring constant and resulting frequency. Grasp the interplay of forces and how they dictate harmonic motion.
Youngsters' Cliff Dives: Comparing Splashdown Speeds
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Dive into the physics of cliff jumping as we analyze the splashdown speeds of two adventurous youngsters. Explore the factors that determine their speeds and choose the best explanation among the options provided.
















