Matching

When sedimentary layers are first formed the sediments fall in horizontal layers

A. Uniformitarianism
B. Principle of faunal succession
C. Principle of superposition
D. Principle of original horizontality

Scientist today believe that as the earth formed different types of life came into being at different times so geologically when fossils found in rock layers are considered it is believed that identification of the fossils can help determine the age of the sedimentary rock layer The fossil is found in

A. Uniformitarianism
B. Principle of faunal succession
C. Principle of superposition
D. Principle of original horizontality

The belief that the processes at work today that shape the face of the earth that were at work in the past it is more important to understand that not only did the processes occur in the past but they that they occur at the same rate and in the same way

A. Uniformitarianism
B. Principle of superposition
C. Principle of faunal succession
D. Principle of original horizontality

The principle states that In layers of rock that have been undisturbed geologist say undeformed the lowest layers formed first then the next and the next and so on the top layer that puts the oldest layer on the bottom and the layers get younger and younger as you go up

A. Uniformitarianism
B. Principle of faunal succession
C. Principle of superposition
D. Principle of original horizontality

In a steady-flow steam power plant system, two adiabatic high-pressure and low-pressure turbines ane used to generate power. superheated steam enters the high-pressure turbine at 8 mpa and 550°c. the steam expands in the high-pressure turbine to a saturated vapor at 3 mpa. in order to increase the powe generation of the power plant, another steam turbine working in a lower pressure ranges is deployed. the outlet vapor from the first turbine is heated up at a boiler to the temperature of 500 c at the constant pressure of first turbine's outlet (3 mpa). then, the vapor enters the second turbine and produces extra work. the exit conditions of the second turbine are 5o kpa and 90 percent quality. if the total power output of the power plant is 25 mw, determine a) the mass flow rate of the water (kg/s). b) heat transfer rate in the boiler (mw). (30 points) 3 mpa 00 c 8 mpa s0 c high pres turbine low pres boiler turbine 50 kpa 3 mpa 09 saturated vapor t heat engine, shown in the figure, operates between high temperature and low temperature of through a heat 4. a carnot tn and tu respectively. this heat engine receives energy from a heat reservoir at t exchanger where the heat transferred is proportional to the temperature difference as ? = k (z,-7, ). it rejects heat at a given low temperature tl. to design the heat engine for maximum work output, find the high temperature, th, as a function of tes and t. (15 points) qe

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.