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The 3rd harmonic frequency of a guitar string is 768 Hz.
a) Calculate its 1st harmonic (fundamental) frequency. (2 marks)
b) Calculate its 4th harmonic frequency. (2 marks)
Two physics students are separated 6.80 m and are creating a standing wave interference pattern along a slinky consisting of 5 loops. If the students are vibrating their ends of the slinky with a frequency of 3.10 Hz, calculate the speed of the wave energy.
Suppose the "vertical attenuator" of an A.C signal is set to 0.5v/Div and the probe factor is 10,if signal occupies 5 divisions vertically.What is the peak to peak voltages and the rms equivalent.
(i) the electric field between the plates(neglect edge effects)
(ii)the capacitance of the capacitor and the energy stored in the capacitor.
On a 200 km bike cycle ride, you ride the first 90 km at an average speed of 20 m/s. What must your average speed over the next 40 km be to have your average speed for the total 200 km be?
(a) 60 m/s?
(b) Given this average speed for the first 90 km, can you possibly attain an average speed of
80 m/s for the total 200 km ride? Explain.
Please reply as fast as possible
(i) the potential
(ii)the electric field strength at a point in an electric field. State and explain how these quantities are related.
A force "A" is addes two force B =(i-2j+4k) and C=(2i+3j-6k) and given a unit vector force along the x axis as their resultant. Find the acceleration of the body 5 kg body , if A acts on the body
A student releases a marble from the top of a ramp. The marble increases speed while on he ramp then continues across the floor. The marble travels of 140cm in 4.80s.
