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When a rigid body is hanging freely from a fixed pivot point and is displaced, it oscillates similar to a simple pendulum and is known as a physical pendulum. The period and angular frequency of a physical pendulum are obtained by using the small-angle approximation and drawing parallels with a spring-mass system. The small-angle approximation (sinθ=θ) is valid up to about 14°.
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When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
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To analyze a hydraulic jump in a rectangular channel with a flow speed of 6 meters per second, follow these steps:Calculate Effective Upstream Velocity:When the downstream gate closes, a hydraulic jump forms, traveling upstream at 2 meters per second. This wave speed combines with the initial channel flow velocity, creating an effective upstream velocity.Identify Flow Velocities Before and After the Hydraulic Jump:Upstream of the hydraulic jump, the effective flow velocity includes both the...
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Motion draws our attention. Motion itself can be beautiful, causing us to marvel at the forces needed to create spectacular sights, such as that of a dolphin jumping out of the water, the flight of a bird, or the orbit of a satellite. The study of motion is kinematics, but kinematics only describes the way objects move—their velocity and acceleration. Dynamics considers the forces that affect the motion of moving objects and systems. Newton's laws of motion are the foundation of...
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Physics unlocked.

Giulia Pacchioni1

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This summary is machine-generated.

Online seminars rapidly expanded during the COVID-19 lockdown, democratizing access to cutting-edge physics research for a wider scientific audience.

Keywords:
Conferences and meetings

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Area of Science:

  • Physics
  • Scientific Communication

Background:

  • The COVID-19 pandemic necessitated rapid shifts in scientific dissemination.
  • Traditional in-person scientific conferences faced unprecedented disruption.

Purpose of the Study:

  • To analyze the impact of online seminars on physics research accessibility.
  • To explore the expansion of scientific frontiers through virtual platforms.

Main Methods:

  • Qualitative analysis of online seminar participation data.
  • Review of scientific community engagement metrics.

Main Results:

  • Online seminars saw a significant increase in attendance during the lockdown.
  • Virtual platforms facilitated broader engagement with advanced physics topics.

Conclusions:

  • Online seminars have emerged as a vital tool for scientific outreach and education.
  • The shift to virtual formats has democratized access to physics frontiers.