Achild is sending pulses down a stretched rope at a rate of 2 pulses per second. the distance between the pulses is 5 meters. what is the speed of the wave? a. 5 m/s c. 2 hz b. 10 m/s d. 2.5 m/s

How would a small bar magnet be oriented when placed at position x?

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) ! : )

Name two kinds of practical electric pumps.