Asmall object is placed at the top of an incline that is essentially frictionless. the object slides down the incline onto a rough horizontal surface, where it stops in 5.0 s after traveling 60 m. a) what is the speed of the object at the bottom of the incline and its acceleration along the horizontal surface? b) what is the height of the incline?

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?