2005A radio station broadcasts at a frequency of 400KHz. If the speed of the wave is 3.0 ×10-8 ms-1, calculate the wavelength of the radio wave.See more
2005A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done isSee more
2005Three non-parallel coplanar forces which can be represented both in magnitude and direction by the three sides of a triangle taken in order willSee more
2005A constant force acts on a body of mass 50kg and changes its speed from 20ms-1 to 90ms-1 in 10 seconds. Calculate the magnitude of the force applied.See more