Fundamental quantity : quantities which are independent on other physical quantity .
ex: length,mass,time, current, amount of substance, luminous intensity, thermodynamic temperature,
Derived quantity : quantities which are depend on fundamental quantities.
ex: Area, volume, density, speed, acceleration, force, velocity etc.
If the fulcrum is closer to the effort, then the load will move a greater distance. A pair of tweezers, swinging a baseball bat or using your arm to lift something are examples of third class levers.
☯ <u>Using 1st equation of motion </u>
☯ <u>Now, Finding the force exerted </u>
☯ <u>Hence</u>,
Answer with explanation :
The negative sign means that the potential energy decreases by the movement of the electron.
negative charge at rest in an electric field moves toward the region of an electric field , so that its potential energy will diminish and change into the kinetic energy of motion. The total energy remains constant.
Positive charges will move downhill because of convention. It is to stay in accordance with other potential theories, particularly gravity, where the "charge" is mass, that moves downwards in the gravitational potential field expressed by ϕ(r)=−GM|r|ϕ(r)=−GM|r|. In an electronic system, howbeit, positive charges are fixed in their position within a component (e.g., a wire), therefore instead of the mobile,the negative charges, electrons, move uphill.
If its asking the distance for the 65 db then use a proportion, if otherwise pleas clarify. It sounds like a pretty juicy conversation.
