If a violin string vibrates at 269 hz as its fundamental frequency, what are the frequencies of the first four harmonics?.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.

A10n falling encounters 10n of air resistance (upward force). the net force on the object is: