Ageologist estimates that a large boulder weighs 7840 n. what should he estimate the mass of this boulder to be? a. 650 kg b. 740 kg c. 780 kg d. 800 kg

Name the non metal condut electricity

In a good thermo flask the main cause of heat loss is

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )