(i) 10 m (ii) 20 m (iii) 40 m (iv) 80 m (c) The maximum potential energy of the object if its mass is 200g 1 mark

(i) 100 J (ii) 120 J (iii) 160 j (iv) 200 J

(d) In the given graph the total mechanical energy will be 1 mark

(i) Same (ii) increases (iii) decreases (iv) will be zero.

(e) In the given graph the kinetic energy 1 mark

(i) Same (ii) increases (iii) decreases (iv) increases then decreases.

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

Calculate the capacitance of a system that stores 2.0 x 10^-10c of charge at 100.0 v. use c=q/v. a. 2.0 x 10^-12 f b. 2.0 x 10^-8 f c. 5.0 x 10^11 f d. 5.0 x 10^7 f

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than