source of energy‚ he assumed that the Sun would start to radiate away its heat‚ finally causing itself to cool down. In reaction to this cooling‚ the Sun’s gases would exert pressure‚ causing itself to contract. As explained by the law of conservation of angular momentum‚ the reduction in size would be led by an increase in the rotational velocity of the Sun. Centrifugal acceleration would push material outward‚ while the gravitational attraction would pull the material inward. Once these forces are finally
Premium Earth Sun Planet
Gymnastics Vault and floor focus on energy conservation and motion in different dimensions. Before a vault or a tumbling pass‚ I start by running (about 60 feet for vault and 15 for floor) trying to attain maximum speed and acceleration right before I begin the first part of the skill. On vault‚ I try to be as efficient as possible in my hurdle to the springboard and transfer to the table‚ which I then push with my arms and shoulders to get one more energy boost before flying off the table. In
Premium Classical mechanics Dimension Cartesian coordinate system
Kiss the Bliss All around the world‚ we are experiencing the great joy of rides. Many tourists have traveled to different continents to explore the feeling of riding the fastest or the tallest roller coasters.. None of those rides‚ though‚ would ever compare to this one. This ride let’s you share your emotions and bring them to great heights without feeling the need to sit still and act normal. We all need to live in the moment‚ and we mostly forget this and don’t amend to it‚ even though it’s our
Premium Amusement park Walt Disney The Walt Disney Company
Basic Physics Content with Answers 1. In the absence of air resistance‚ a ball of mass m is tossed upward to reach a height of 20 m. At the 10m position‚ half way up‚ the net force on the ball is A. 2mg. B. mg. C. mg/2. D. mg/4. B is correct‚ as a vector diagram would show. Other choices show carelessness or confusion between force and speed‚ and what constant acceleration means. 2. When you drop a ball it accelerates downward at 9.8 m/s2. If you instead throw it downward‚ then its acceleration
Premium Energy Light Electromagnetic radiation
Items that transform between these forms are called transducers. The above list of the known possible forms of energy is not necessarily complete. Whenever physical scientists discover that a certain phenomenon appears to violate the law of energy conservation‚ new forms may be added‚ as is the case with dark energy‚ a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Classical mechanics distinguishes between potential energy‚ which
Free Energy Potential energy
he swings his arms down past his legs and then up‚ leaping into the air and off of the board. The purpose of this hurdle is as follows: A diver cannot simply stand on the end of board‚ step off‚ and expect to have the power to go up or the momentum to rotate his body in any direction. What the hurdle does‚ is first to allow the diver to use the diving board as a slingshot‚ and second get as much energy as possible out of the "slingshot". This is achieved when the diver takes the first leap
Premium Classical mechanics Torque Inertia
There is much more to the arabesque‚ grand jeté‚ and fouetté than just hours of practice and strong toes. Dancers do not often understand the physics and mathematics describing their movements‚ but they know how to execute them with grace. If ballerinas were not able to feel physics‚ they would fall over. Legs‚ arms and head are oscillating as they turn– moving back and forth in seemingly separate patterns. For dancers‚ everything must move in separate patterns‚ yet at the same time‚ move at the
Premium Ballet Dance Performance
Port-Hamiltonian formulation for plasma control in Tokamak reactors Trang VU‚ Laurent LEFEVRE and Bernhard MASCHKE Abstract— A port-Hamiltonian model is derived for tokamak plasma current profile dynamics. Magnetohydrodynamics and energy balance equations are first written in port-Hamiltonian formalism using Stokes-Dirac structures in 3D forms and a specific interconnection structure for the magneto-hydrodynamical coupling. A balance preserving reduction scheme is applied to the 3D models‚ assuming
Premium Energy Magnetic field Fundamental physics concepts
Aerodynamics Aerodynamics is a branch of fluid dynamics concerned with the study of gas flows. The solution of an aerodynamic problem normally involves calculating for various properties of the flow‚ such as velocity‚ pressure‚ density‚ and temperature‚ as a function of space and time. Understanding the flow pattern makes it possible to calculate or approximate the forces and moments acting on bodies in the flow. This mathematical analysis and empirical approximation form the scientific basis
Premium Aerodynamics Fluid dynamics
Rukmani Birla Modern High School‚ Jaipur Summer Vacation Assignment (2015-16) Class XI Note: Date for submission of projects- 15/07/2015 Subject- English 1. Read the novel The Canterville Ghost by Oscar Wilde thoroughly and change its genre to drama. Prepare a script in groups. Use A4 size ruled sheets. The work should be done in a neat handwriting. After the submission of the script each group will be asked to perform the play. Subject: Mathematics Define a Venn diagram and write its history.
Free Psychology