Asmall crack occurs at the base of a 15.0-m-high dam. the effective area through which water leaves is 3.90 × 10-3 m2.
(a) ignoring viscous losses, what is the speed of water flowing through the crack?
(b) how many cubic meters per second of water leave the dam?

In a series circuit the __ is the same at every point

Which of the following is not a physical property of mattera. melting pointb. heat of combustionc. viscosityd. boiling point

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600