Which of the following quantities below represents a velocity? 25 m/s
10 km/him
15 mi/hr eastward
3 mi/hr/hr

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) ! : )

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?