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What energy transformation occurs when jumping on a trampoline?
When jumping on a trampoline, the potential energy stored in your muscles is transformed into kinetic energy as you leave the trampoline surface. As you reach the apex of your jump, the kinetic energy is converted back into potential energy due to your change in height. This cycle of energy transformation continues as you bounce up and down on the trampoline.
What is the definition of a superelastic collision?
A superelastic collision is when the total kinetic energy AFTER a collision is more than the total kinetic energy BEFORE the collision. It's more easily seen when examining the speeds (the masses will normally stay the same) of the two objects. When the speeds are faster AFTER the collision than BEFORE the collision, you likely have a superelastic collision. (Kinetic Energy equals 1/2xMassxSpeed^2) When the speed increases there is a larger kinetic energy. Before you implode (I almost did) from the disregard of the first law of thermodynamics (that energy can't be created or destroyed, only transferred and transformed), the increase in kinetic energy is most likely a conversion of potential energy to kinetic energy. An example would be two carts with springs colliding and creating a supercollision. Since the springs are triggered because of the collision, their potential energy will be converted into kinetic energy and the carts will leave the collision with a larger velocity and thus more kinetic energy.
What are the energy changes in a plane taking off?
The chemical energy in the fuel flows to the engines, which combine the carbon and hydrogen in the fuel with oxygen from the air, to produce heat, carbon dioxide and steam. The heat produces kinetic energy in the hot exhaust gases which leave the engine at high speed. The reaction drives the plane forward and it accelerates, gathering kinetic energy. After takeoff the aircraft rises and gathers potential energy as well as kinetic energy. A Boeing 737-800 with a mass of 85 tons flying at 35,000 ft has a potential energy of 9 Gigajoules. Flying at 400 kt its kinetic energy is 1.8 Gj.
When is the kinetic energy transferred from object to object?
kinetic Energy. Energy is transferred from one object to another when a reaction takes place. Energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few. For the blue ball to move to the position of the green ball, energy must be given to the blue ball.
What causes particals to evaporate and leave the surface of a liquid?
Molecules at the surface of a liquid absorb kinetic energy (kinetic energy used to disrupt intermolecular forces) and evaporate. (vapor pressure is exerted)
What conversion process drives a roller coaster?
On a roller coaster, we see the cars lifted to the high point on the ride. This converts the kinetic energy used to lift the cars into potential energy. When the cars are dumped over that initial apex, the potential energy is converted back into kinetic energy. As those cars continue along the track, conversions of kinetic energy to potential energy will occur at each rise along the course, and there will be conversions from potential energy back into kinetic energy at the drops. This continues until the end of the ride, where most of the potential energy that was initially put in has been lost in friction, and only a bit of braking is needed to stop the cars.
If you toss a ball in the air at what point does it have the most kinetic energy?
As soon as the ball has been released.In this case, the energy starts off purely kinetic; dependent on motion. Once the ball has reached it's highest point, it has converted to potential energy; dependent on height. It then resumes falling back to kinetic energy. This is best shown by a graph of energy over time where Potential energy is a parabola opened down (frown face) and Kinetic energy is a parabola opened up (smiley face).With this you can also note that Kinetic Energy + Potential Energy = mechanical energy. These two graphs added together should make a straight line for Mechanical energy (in simplistic demonstration).
Explain what a close system is and how energy is conserved within it?
A closed system is a system where no mass can enter or leave, but energy can still be exchanged with the surroundings. In a closed system, energy is conserved through interactions such as heat transfer, work done, or changes in potential and kinetic energy within the system. This means that the total energy within the closed system remains constant over time.
What happens to matter and energy and closed system?
In a closed system, neither the energy or matter changes. (Study Island)
When you throw a ball in the air what type of energy does it gain as it rises?
When the ball leave your hand it goes up with an initial velocity v0 so that the action of your hand gives the ball the kinetic energy K=0.5 M v02 where M is the ball mass. When the ball goes up the kinetic energy decreases: a part is converted in potential energy while the balls is higher and higher and part is dissipates due to the attrition with air (that more precisely is due to air viscosity) and to the fact that air particles are put in motion by the arrival of the ball so that they gain kinetic energy at the expenses of the kinetic energy of the ball due to collision. Neglecting the last term that, due to the small density of air with respect to the ball is generally quite small, the viscosity dissipate energy mainly by generating heat. When the ball stops at maximum height the kinetic energy is reduced to zero (the velocity is zero) and all the energy is potential, while a certain amount of heat has been dissipated during the motion. If we call Q the quantity of generated heat and h the maximum height reached by the ball, for the energy conservation rule we have 0.5 M v02=Q+M g h If the air viscosity is negligible, or if the ball goes up in vacuum, Q is zero and we can deduce the maximum height the ball reaches h=(M v02)/( 2 M g)
When does a baseball have the most kinetic energy?
Just as it leaves the bat after being struck. From then on it will gradually slow down as the friction of the air around it slows it down. Alternatively, it may have the most kinetic energy as it leave the hand of the pitcher when he is throwing a fast-ball or when leaves the hand of a fielder when he is throwing it to another player. It depends on what part of the game you are talking about.
Why do liquids cool as evaporation takes place?
As a liquid evaporates, molecules with higher kinetic energy leave the liquid surface, which results in a decrease in the average kinetic energy of the remaining molecules and, therefore, a decrease in temperature. This cooling effect is due to the energy required to break the intermolecular bonds holding the liquid molecules together during evaporation.
