Two identical 1.50kg masses are pressed against opposite ends of a spring of force constant 1.75N/cm, compressing the spring by 25.0cm from its normal length. Find the maximum speed of each mass when it has moved free of the spring on a smooth, horizontal lab table.

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.