The small box is started with an initial tangential velocity of 9.4 m/s in the direction towards to top of the spherical dome at an initial angle of 39 ◦ with other conditions the same. find the critical angle at which the box leave the surface of the dome. answer in units of ◦ .

This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

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) ! : )

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same