A baseball player hits a ball that arcs at an angle of 42˚ above the horizontal. If the ball is hit at a velocity of 8 m/s, what is the horizontal component of the velocity? Explain how this can be calculated.

How will the system respond to a temperature increase?

Carbon 14 is a naturally occurring stable

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