An object moves in a circular path at a constant speed. what is the direction of the net force acting on the object?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Which accounts for an increase in the temperature of a gas that is kept a constant volume

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.