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1. Calculate the wavelength of a waveform given a period of 17μs.

How can global warming be checked or controlled

List and explain any four effects of global warming on human health in Africa

Assuming that an oscilloscope displays a V_max of 5.22V and V_min of 1.33V. Calculate the percentage of modulation

(Acceleration due to rotation and orbit of the Earth) A body is at rest at a location on the Earth's equator. Find its acceleration due to the Earth's rotation.[Take the Earth's radius at the equator to be 6400 km.] Find also the acceleration of the Earth in its orbit around the sun.[Take the Sun to be fixed and regard the Earth as a particle following a circular path with centre the Sun and radius 15*10¹0m.]

A racing car moves on a circular track of radius b. The car starts from rest and its speed increases at a constant rate "\\alpha". Find the angle between its velocity and acceleration vectors at time t.

A particle P moves on a circle with centre O and radius b. At a certain instant the speed of P is "\\upsilon" and its acceleration vector makes an angle "\\alpha" with PO. Find the magnitude of the acceleration vector at this instant.

1.   Assuming that an oscilloscope displays a V_max of 5.22V and V_min of 1.33V. Calculate the percentage of modulation. 

90 men and 60 women were asked if they had watched the latest ‘Expendables’ movie. Altogether 3/5 of the people said Yes.

3/10 of the women said Yes.

What percentage of the men said No? (Show your working)

Suppose cells have an electromotive force of 14 V.if a resistor of 20 is connected across the cells,the terminal potential difference is 12 V.Determine the current through the 20 resistor and the internal resistor of the cells.