39. 2074 Supp Q. No. 11 in a resonance air column apparatus, the first and second resonance positions were observed at
18 cm and 56 cm respectively. The frequency of tuning fork
used was 480 Hz. Calculate the velocity of sound in air and
end correction of the tube.
[4]​

The harmonic motion of a particle is given by f(t) = 2 cos(3t) + 3 sin(2t), 0 ? t ? 8. (a) when is the position function decreasing? (round you

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air