Ezequiel y Eugenia están ordenando su casa y empujan una caja de 5,0 Kg como muestra la figura. La fuerza que realiza Ezequiel tiene un módulo de 30 N y es horizontal hacia la derecha, la fuerza que ejerce Eugenia tiene un módulo de 25 N siendo en la misma dirección y sentido que la fuerza que realiza Ezequiel, tanto la fuerza peso como la fuerza normal tienen un módulo de 49 N y entre la caja y el piso existe rozamiento cuyo módulo es 10 N

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1

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.