Energyistheability todoworkormake thingsmoveor change. Energycooksyourfood powersyourcomputer, andmovesyourmuscles. Itrunsyourcellphones anditheatsandcools yourschoolandhouse. 10/3/2011 2 MechanicalEnergyisthee
Two things are necessary for work to occur. First, force—or energy—must be applied to the object. If no energy is used, no work has been done.Second, the object must be moved a distance. If the object is pushed or pulledbut it doesn’t move, no work has been done.When we move...
is the ability and strength to do active physical things and the feeling that you are full ofphysical power and life. A. EnergyB. MatterC. Cover 答案 【解析】A相关推荐 1【题目】()21. is the ability and strength to do active physical things and the feeling that you are full ofphysical...
energy:(1) n. 精力 power to do a lot of work [例句]He has much energy.他精力充沛。The students have shown youthful energies.学生们显示出年轻人的活力。(2) n. 能，能量 force or power to make things, machines, etc. move or work [例句]The light energy comes from the sun....
What two conditions must be met in order for work to be done? 2. The object must move in the SAME direction as the force. 1. A force must be applied. 2. The object must move in the SAME direction as the force. 500 ___ is the ability to do work or cause change. Energy 100...
But do you know that energy can come from people,too?When you pedal a bike,you produce energy.You use your legs to push the pedals.Your energy is transferred(转移) to the bike.That makes the bike move. Now imagine riding your bike to create enough power to run a computer.Some students...
smarter grid and much more intelligent switching and communication systems than old energy systems. With solar and wind growing there’s great demand for robust prediction tools so that we know with precision where energy will be available or unavailable, along with the ability to move energy ...
We use that energy to work and play. We learned thedefinitionof energy in the introduction: Energy Is the Ability to Do Work. Energy can be found in a number of different forms. It can be chemical energy, electrical energy, heat (thermal energy), light (radiant energy), mechanical energy...
This method demonstrated the ability to provide voltage harvest up 0.1 V while immersing a Chinese brush into DI water and applying pressures up to 2 N on the harvester [72]. Moreover, research efforts resulted in the following findings concerning the droplet movements: Sign in to ...
Shrinking supplies, higher demand and fears of a complete Russian cutoff have driven natural gas prices to record highs, further fueling inflation that has squeezed people's ability to spend and raised the risk of a recession in Europe and the U.K. “The market shows no sign of finding a ...