Physics
When Shyam, the band leader, struck both the bass drum and the kettle drum with equal force, the bass drum emitted a sound measuring 120 dB, whereas the kettle drum produced a sound of 90 dB. Explain this discrepancy in the loudness.
Related Questions
Regenerative braking involves harnessing the energy that is typically lost when a car decelerates and brakes and instead using it to recharge the car's batteries. Unlike traditional braking systems that simply dissipate energy, regenerative braking allows some of that energy to be recycled.
(a) What is the energy conversion process that results in the wastage of energy in a normal car during braking?
(b) How does regenerative braking differ from normal braking in terms of energy conversion?
John is trying to create musical notes using water-filled bottles, as shown in the picture.
Which of the bottles is likely to produce a musical note with the highest pitch? Give reasons.
In the below diagram, calculate the ratio of the resistances A, B, C and D.
There are two copper wires of length ratio 1:2 that have their cross-sectional areas in the ratio 1:4. What will be the ratio of their:
(a) resistances?
(b) specific resistances?