Energetic vibrations can be explained by using the example of a mass on a spring where potential and kinetic energy are involved. This system can be put into motion by “hitting the mass to put in kinetic energy or by pulling it to one side to put in potential energy” (Crowell) and will continue in this motion‚ trading the energy from potential to kinetic and back again‚ assuming there is no friction in the system. Knowing that the total energy is constant and that it is proportional to the square of
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PHYSICAL SCIENCE I. HISTORICAL BACKGROUND A. Babylonians They recorded eclipses and they were able to predict future eclipses. They named the twelve divisions of the Zodiacs‚ divided the northern sky into constellation and gave their present names. Their priest recorded planetary motions especially those of Venus‚ geometry and mathematics were highly developed by these people. There were evidences of multiplication tables and tables of square and cubes. They created standards for measuring length
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that I do almost everyday and has been a big part of my life for as long as I can remember. My poster depicts the physics involved in kicking‚ the ball rolling across the field‚ and bending the ball. Kicking a soccer ball involves transferring kinetic energy‚ or movement‚ from your leg to the ball. The energy you apply into the ball combines with the stored energy already present combining to create a velocity that is even faster than the object that hit it (your leg). Factors
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turns‚ and kicks‚ dance is a representation of physics at its best and most elegant. Two dance moves in particular come to mind when I think of physics and its effects on dance. They are the grand jeté & projectile motion‚ and the glissade and friction. Grand jeté literally means big jump. It is a long horizontal jump‚ starting from one leg and landing on the other. It also appears as a split in the air. The goal of this move is to create an illusion to the audience that the dancer is floating through the air and also
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A hockey stick exerts an average force of 39N on a 0.2kg hockey puck over a displacement of 0.22m. if the hockey puck started from rest‚ what is the final velocity of the puck? Assume no friction. Your physics teacher walking with the aid of a cane approaches a skateboard of 3.5 kg lying on the side walk. Pushing with an angle of 60 degree down from the horizontal with his cane‚ he applies a force of 115N‚ which is enough to toll the skateboard out of his way. Calculate the initial acceleration
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really move? The whole idea behind the roller coaster is the transfer of energy. The conversion of potential energy to kinetic energy is what drives the roller coaster around the track. All the kinetic energy you need is produced upon descending the first hill. The roller coasters have different types of wheels to make the ride the most enjoyable to the rider. The friction wheels maintain lateral motion. Running wheels guide the roller coater on the track. The last set of wheels keeps the ride
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form to another. Also the total amount of energy in a closed system never changes. Along with my wonderful partner Kelvin we thought that energy in a closed system will remain constant throughout unless there is an outside energy such as “work” or friction. We also discussed the differences and similarities between closed and open systems. We wanted to test this theory with the lab provided to us. Materials Before we start any lab we need the proper materials. The material Kelvin and I used for this
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causes the spring to become compressed. The stored energy in the coils of the spring is elastic potential energy. This extra energy provides the pogo stick with an extra amount of force on it’s way back up. With the uncoiling of the spring it releases kinetic energy causing you to get a higher bounce while doing the same amount of work with your legs because of the spring. First‚ I want to look at what a spring is and how exactly it works to create a mechanical advantage. Also‚ we need to be able to understand
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difference of momentum before and after collisions. Using the photo gates record the velocity of each cart‚ comparing momentum and kinetic energy to find the law. The experimental apparatus are two red carts in approximately same weight and a gold cart in lower weight than the red ones‚ a stable air track (blow a constant stream of air out through numerous tiny holes) with low friction and two photo gates. 2) Project description 2.1) Theory We should have the concept of momentum to disassociate velocity
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do in pushing a box with a force of 10 N over a distance of 4.0 m in the direction of the force? (A) 0.4 J (B) 4.0 J (C) 40 J (D) 400 J (E) 4000 J 2. A person pushes a 10 kg box at a constant velocity over a distance of 4 m. The coefficient of kinetic friction between the box and the floor is 0.3. How much work does the person do in pushing the box? (A) 12 J (B) 40 J (C) 75 J (D) 120 J (E) 400 J 3. How much work does the force of gravity do in pulling a 10 kg box down a 30º inclined plane of length
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