The load-extension graph of an elastic material is illustrated above. Use the graph to determine the work done in stretching the material

(a) Name two artificial satellites.

(b) A geostationary satellite moves in an orbit of radius 6300 km. Calculate the speed with which it moves in the orbit. π = \(\frac{22}{7}\)

A projectile is fired at an angle of 30° to the horizontal with a velocity of 40 m/s Calculate the velocity attained after 1 s. [g = 10 m/s\(^2\)]

The circuit diagram below is a simple current rectifier circuit. Use it to answer the questions that follow:

(a) State the function of each of the parts labelled A and B. Sketch the output signal produces.

Explain the wave-particle duality of light. (b) A particle of wavelength 4.2x 10\(^{-11}\)m travels (a) With a momentum of 1.6 x 10\(^{-23}\) kg m/s,

Determine the value of the Planck's constant, h.