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1. Helium is compressed isothermally from 121 kPa(abs) to 301 kPa(abs). Determine the entropy change associated with this process.
2. Air at 14.7 psia and 70 °F is compressed adiabatically by a centrifugal compressor to a pressure of 100 psia. What is the minimum temperature rise possible? Explain.
A -2.47 microC charge is placed at the center of a conducting spherical shell, and a total charge of +6.25 microC is placed on the shell itself. Calculate the total charge on the outer surface of the conductor
A long horizontal wire carries 22.0A of current due north. What is the magnitude of the net magnetic field 25.0cm due west of the wire
Two cars collide at an intersection. Car A, with a mass of 1900{kg} , is going from west to east, while car B, of mass 1500{kg} , is going from north to south at 17.0{m}/{s} . As a result of this collision, the two cars become enmeshed and move as on..
the siren on an ambulance is emitting a sound whose frequency is 2150 hz. the speed of sound is 343 ms.a if the
What is the potential at the fourth corner (point A)? Express your answer in terms of the variables Q, L, and the Coulomb's constant k.
A mechanic turns a wrench using a force of 25 N at a distance of 16cm from the rotation axis. What is the magnitude torque does she apply to the wrench
in coming to a stopa car leaves a skid marks 92m long on th highway. assuming a deceleration of 7.0 ms squared estimate
A high energy photon is scattered at an angle of ? =180.0° from an electron that is initially at rest. Find the energy of the incident X-ray photon
Water flows out of a garden hose which has an opening 2.20 cm in diameter. The flow is such that the water fills a 2.50 gallon bucket in 30.0 seconds. What is the flow speed in the underground pipe
A bat flying toward an obstacle at 10 m/s emits brief, high-frequency sound pulses at a repetition frequency of 75 Hz. What is the time interval between the echo pulses
What is the difference between momentum by convective transport and momentum by molecular transport?
About 1350 W/m2 of electromagnetic energy reaches the upper atmosphere of the earth from the sun, which is 1.5 × 1011 m away. estimate the average power output of the sun
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