Two identical piano wires have a fundamental frequency of 576 Hz when kept under the same tension. What fractional increase in the tension of one wire will lead to the occurrence of 5 beats/s when both wires oscillate simultaneously

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

conservation of mass

mass before something happens = mass afterwards