You are working as a forensic physicist, analyzing a collision for the state police. According to witnesses, a car heading east and a truck heading south collided in an intersection. Photographs taken at the scene show that the car was severely damaged. Which of the following apply to this situation?

(A) |p|car, initial+|p|truck, initial=|p|car, final+|p|truck, final
(B) pcar, x, initial+pcar, x, final=ptruck, x, initial+ptruck, x, final
(C) pcar, y, initial+ptruck, y, initial=pcar, y, final+ptruck, y, final
(D) Ecar, initial+Etruck, initial=Ecar, final+Etruck, final
(E) pcar, x, initial+ptruck, x, initial=pcar, x, final+ptruck, x, final

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?

Asatellite component is in the shape of a cube with 10cm edges, has an evenly distributed mass of 2 kg and one bolt hole at each of four corners. if the maximum predicted random vibration environment is 10 grms, what bolt size would be a good choice for restraint? what other factors might drive bolt size besides force/stress?

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors