Recent content by jeekeshen

Am getting actually puzzled about some facts from telecommunication. When signal are transmitted from two mobile phones, the signal which is converted at the sending end from analogue by the speaker into digital on the mobile phone, does the transmitted signal actually wirelessly i mean is in...

Yes I've understood that but in some questions they ask conditions for the application of these equations of motion. I know the fact of the speed of light and that of uniform acceleration but i wanted some more that appears to seem more general.

ya that's wat i meant the initial conditions :S.. just like acceleration should be uniform, many questions ask too but the other one that speed must be less than speed of light is too obvious else the matter will disintegrate :S

Uniform acceleration compensate the rotating phenomenon as well i think !

Inertial frame ? meaning wat ?

Equations of motion! the conditions pleasezz What are the conditions that enable the equations of motion to be used except from the fact that acceleration must be uniform ?

Equations of motion... What are the conditions that enable the equations of motion to be used except from the fact that acceleration must be uniform ?

Ya its just a definition... but everything is base on it. Just wanted to know if it was the positive test charge that was causing that.

Electric Potential ! Am getting confuse with the definition, why does the definition says "workdone is bringing unit POSITIVE charge from infinity to that point" and not NEGATIVE charge? can it be negative also in the definition or is it because we always use positive test charge...

O yea acceleration is therefore zero WTF

No not accelerating... the net force will perhaps be; using F= Ma where f is the resultant force, 720 X 9.8 = net force...

Yes but i have its kinetic energy also... would this help to calculate the frictional force ?

The real Question : The power of the car is 36.6 kw and speed is 32m/s the mass of the car is 720 kg... Calculate the magnitude of the external force opposing the motion of the car...??

Am getting really confuse with some force related equation.. Power = Workdone / Time = Force X Speed BUT THIS FORCE is it the one that makes the object move or the friction force( the one opposing the motion ) Because one of my homework makes me think that it's the frictional...