am sliding a case of beer down a ramp from the back of a truck. The case has a mass of 10 kg. The truck bed is 1 meter above the ground. The ramp has a coefficient of kinetic friction of μk = 0.2 and a slope of 30 degrees relative to the horizontal.. If I give the case a push, so that its speed is v = 0.5 m/s at the top of the ramp, how fast is it moving when it gets to the bottom of the ramp?

The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output

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?

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.