A force of 1.2 N is applied to an object of mass 1.5 kg. It accelerates at 0.50m/s . Determine
the force of friction that is acting and the coefficient of kinetic friction involved.

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.