Two flat mirrors are perpendicular to each other (like this: _| ask me to draw if this is unclear). An incoming beam of light makes an angle of 45 degrees with the first mirror. What angle will the outgoing beam make with the second mirror

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.

Which sections of the heating curve illustrate this process?

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?