The Cart start at position x=0 mm at time t=0s , if the length of the index card is 5cm, and the distance between the photogates is 290 mm, Time 1.075 State 1=1
Time 1.185 State 1=0
Time ?? State 2=1
Time ?? State 2=0
What is the speed of the cart
What is the position of Gate 1
Write the expression for position vs Time for the cart
At what time dose the cart leave gate 2?

Under normal temperature and pressure conditions, what type of rock could be formed from weathering in erosion of metamorphic rock

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?