Part c suppose 1 kg each of water (4.19 j/(g ⋅ ∘ brick (0.90 j/(g ⋅ ∘ iron (0.46 j/(g ⋅ ∘ and olive oil (1.79 j/(g ⋅ ∘c)) were held at the same initial temperature and heated for an equivalent amount of time. indicate their relative final temperatures from lowest (left) to highest (right). assume no heat is lost to the surroundings. you can use the intro tab of the phet to visualize the temperature changes. (assume that the mas of the water, iron, and olive oil is 1 kg each and that the mass of the brick is 0.5 kg.) rank from lowest resulting temperature to highest resulting temperature. to rank items as equivalent, overlap them. view available hint(s) ironwaterolive oilbrick

Acommercial passenger jet can travel up to 970 km/hr at an altitude of 30,000 feet. at this speed, how long will it take the jet to travel 1,865 kilometers? a. 2.3 hrs b. 1.9 hrs c. 1.7 hrs d. 1.5 hrs

An internally reversible refrigerator has a modified coefficient of performance accounting for realistic heat transfer processes of where qin is the refrigerator cooling rate, qout is the heat rejection rate, and is the power input. show that copm can be expressed in terms of the reservoir temperatures tc and th, the cold and hot thermal resistances rt,c and rt,h, and qin, as where rtot rt,c rt,h. also, show that the power input may be expressed as 1.39 a household refrigerator operates with cold- and hot-temperature reservoirs of tc 5 c and th 25 c, respectively. when new, the cold and hot side resistances are rc,n 0.05 k/w and rh,n 0.04 k/w, respectively. over time, dust accumulates on the refrigerator’s condenser coil, which is located behind the refrigerator, increasing the hot side resistance to rh,d 0.1 k/w. it is desired to have a refrigerator cooling rate of qin 750 w. using the results of problem 1.38, determine the modified coefficient of performance and the required power input w under (a) clean and (b) dusty coil conditions. internally reversible refrigerator qout qin w high-temperature reservoir low-temperature reservoir th th,i tc,i tc high-temperature side resistance low-temperature side resistance w qin th tc qinrtot tc qinrtot copm tc qinrtot th tc

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star