PreparED Study Materials

PHYS 139: Stars and Constellation Identification

School: University of Delaware

Number of Notes and Study Guides Available: 1

Notes

Videos

Determining Kinetic Friction with a Spring-Loaded Block
Stars

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Understand how to determine the coefficient of kinetic friction using a wooden block and a spring. Employing the law of conservation of energy, we use the spring's compression and stretch measurements. Through energy equations and Newton's second law, we deduce that ? equals 0.4.

Gravitational Force on the Sun: Earth's Seasonal Variations
Stars

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Explore the intriguing interplay of Earth's elliptical orbit, the changing seasons, and the gravitational forces it exerts on the Sun. We'll provide insights into the ratio of these forces and challenge you to consider multiple perspectives on this celestial phenomenon.

Slinky Stretch: Calculating Transverse Wave Speed
Stars

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Discover the fascinating world of Slinky physics as we explore the speed of transverse waves when this iconic toy is stretched by a 2.0-N force. Dive into the science behind the Slinky's behavior!

Calculating k, Amplitude & Frequency for Fisherman's Scale
Stars

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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

Advantages of Laboratory-Based Measurement Standards
Stars

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Discover the key reasons why measurement standards rooted in laboratory procedures offer advantages over standards based on specific objects, like the international prototype kilogram. Dive into the world of metrology and standardization in this informative video.

Athlete's Power: Watts in a 5m Rope Climb
Stars

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Explore the physics behind an athlete's rope climb. Understand the relationship between power, force, and time, and how to calculate the minimum power output an athlete exerts. Witness the interplay of physics principles in evaluating athletic prowess.

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