The manufacturer of a 6v dry-cell flashlight battery says that the battery will deliver 15 ma for 60 continuous hours. during that time the voltage will drop from 6v to 4v. assume the drop in voltage is linear with time, how much energy does the battery deliver in this 60h interval?

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

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine