At the surface of venus the average temperature is a balmy 460 ∘c due to the greenhouse effect (global the pressure is 92 earth-atmospheres, and the acceleration due to gravity is 0.894 gearth. the atmosphere is nearly all co2 (molar mass 44.0g/mol) and the temperature remains remarkably constant. we shall assume that the temperature does not change at all with altitude. part awhat is the atmospheric pressure 2.00 km above the surface of venus? express your answer in earth-atmospheres. express your answer using two significant figures. p = earth atmpart bwhat is the atmospheric pressure 2.00 km above the surface of venus? express your answer in venus-atmospheres. express your answer using two significant figures. p = venus atmpart cwhat is the root-mean-square speed of the co2 molecules at the surface of venus and at an altitude of 2.00 km ? vrms = m/s

The consumption of fossil fuels could be

Aheat engine running backward is called a refrigerator if its purpose is to extract heat from a cold reservoir. the same engine running backward is called a heat pump if its purpose is to exhaust warm air into the hot reservoir. heat pumps are widely used for home heating. you can think of a heat pump as a refrigerator that is cooling the already cold outdoors and, with its exhaust heat qh, warming the indoors. perhaps this seems a little silly, but consider the following. electricity can be directly used to heat a home by passing an electric current through a heating coil. this is a direct, 100% conversion of work to heat. that is, 19.0 \rm kw of electric power (generated by doing work at the rate 19.0 kj/s at the power plant) produces heat energy inside the home at a rate of 19.0 kj/s. suppose that the neighbor's home has a heat pump with a coefficient of performance of 4.00, a realistic value. note: with a refrigerator, "what you get" is heat removed. but with a heat pump, "what you get" is heat delivered. so the coefficient of performance of a heat pump is k=qh/win. an average price for electricity is about 40 mj per dollar. a furnace or heat pump will run typically 200 hours per month during the winter. what does one month's heating cost in the home with a 16.0 kw electric heater? what does one month's heating cost in the home of a neighbor who uses a heat pump to provide the same amount of heating?

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?