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1. ### work done一問

首先，讓我們先弄清楚 work done 的意思， work done...傳送是透過兩件物件之間的 force，如「 work done on object A by object...移動，它仍沒有賺得任何能量，所以沒有 work done。反之，如果車子被推動了...

2. ### work done

Work done against friction refers to the energy used by an external agent..., assuming friction is a constant, say f. Then the work done against friction is given by fs, where s is...

3. ### Work done

唔係 如果你take upwards係positive 咁 work done when moving up= mgh = 10*10*10= 1000J /1kj work ...12-19 19:09:10 補充： 其實唔洗分兩個case去計 你可以直接先揾displacement 再用 work done=Fs計s = 10 (-10) = 0so by W=Fs W=0J...

4. ### work in thermodynamics?

...with △V = 5 dm3 since the volume is doubled. Hence work done = P(△V) = 120 × 103 × 5 × 10-3 = 600J The...

5. ### work done

From definition of [ work done], any work done must involve a force and a displacement. If the...displacement are in opposite direction, the force is said to do negative work . Examples: 1. An object falling under gravity, the weight (which...

6. ### Work , energy and power

In an inclined plane, the work done by the force pulling an object up the plane contributes... the frictional force and g is the acceleration due to gravity The work done by the force W = F.L i.e. W = [mg.sin(a...

7. ### Work done

...是對的. 雖然total displacement 是0, 但因為過程中出現了兩個不同方向的力, 所以 work done 不是0. 回上面的一位: Work done = F．s...

8. ### Work done concepts

...man has less total energy after he performed work on another object. False. Metabolism and respiration...the car. Q: There is a larger work done against friction when moving up an ...

9. ### Work and energy

... A is pulled towards the pulley Now consider work done and energy changes WD by gravitational forces on the...

10. ### WORK DONE

唔一定係 要睇係咩 work done如果係 work done by net force,個force就係net force 例如有件野受到...向前力 10N friction work done by friction個force就係10N work done by 50N個force就係50N 題目問時佢一定會講埋係咩force...

1. ### 相關詞

 worked up worked on worked out worked at worked hard have worked