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A sample of CO2 gas has a mass of 0.2 kg. (Atomic mass of C = 12; of O = 16). It is originally at T = 450 K and V = 0.1 m3 . It undergoes a free expansion to twice its original volume in a chamber
"De-icing salt" is used to melt snow and ice on streets. the highway department of a small town is decideing whether to by NaClor CaCl2 for the job. The town can obtain NaCl for$0.28/kg. What is
An ideal gas is in an initial state of 35 C, 150 kPa and 0.2 m3. It undergoes a quasi-static isothermal expansion until its pressure is 95 kPa.
If 250 ft3/s of air at 122 degrees F and approximately atmospheric pressure is preheated for a combustion process to 932degrees F, what rate of heat transfer is required?
A parallel-plate capacitor is charged with 0.220 C. If the area of each of its plates is 0.620 m2, what is the electric field energy density between the plates?
A 1.50 mm-diameter glass bead is positively charged. The potential difference between a point 1.50 mm from the bead and a point 3.60 mm from the bead is 460V . Note: The given distances are measure
The electric field strength between the "plates" of this capacitor is 6.11×105 V/m. If the dielectric were replaced with a vacuum, what would the strength of this electric field become, assumin
Gasoline is delivered to a farmer for use in the farm's combines. Acylindrical storage tank with a circumference of 5.8 ft is used to store the gasoline until it isused. The farmer uses a yardstick
A Carnot engine operating between energy reservoirs at temperatures 300 K and 525 K produces a power output of 1040 W. What are each of the following?
Calculate the pH at the equivalence point for the titration of 0.20M aniline (C6H5NH2,kb=3.8 x 10-10) with 0.20 M HCl. [Hint: remember the dilution factor caused by addition of titrant to aniline solu
A coin (floating in outer space) of mass m and radius R is initially spinning around the axis perpendicular to its plane, with angular speed w3.
The free end of the stick is pivoted on a pole and the sphere rolls on the ground without slipping with its center moving in a circle of radius R with frequency Ω. What is the normal force bet
A hydrogen atom undergoes an electronic transition from the n=4 tothe n=2 state. In the process the H atom emits a photon. This photon then strikes a cesium metal surface and ejects an electron.The
What if the track had been considerable off level? How much energy would have lost to work against gravity as M traveled a distance h down the track when the track slanted uphill at some angle theta
Human bodies are actually open systems, and the main mechanism ofheat loss is through the evaporation of water. What mass of watershould be evaporated each day to maintain constant temperature?
Draw appropriate diagram for solving the problem. Determine the velocity of the bird with respect to the wind at any given instant of time. What is the position of the bird with respect to the groun
ΔH_vap of CCl2F2 is 289 J/g . What mass of this substance must evaporate in order to freeze 130g of water initially at 22 degrees C? (heat of fusion of water is 334J/g; specific heat of
A flat surface of area 2.50 m2 is rotated in a uniform electric field of magnitude E=5.35x105 N/C. Determine the electric flux through this area when the electric field is parallel to the surface.
A 39 g slug of silver (specific heat capacity = J/Cg) isheated to 92.1 C and placed in water cooled to 20.0 C (spacificheat4.18 J/cg) if the final temp of the water and silver slug is25.7 C.
Bob is pushing a box across the floor at a constant speed of 1.3 m/s. applying a horizontal force whose magnitude is 45 N. Alice is pushing an identical box across the floor at a constant speed of 2
(a) what is the magnitude of the average acceleration of a skier who, starting from a rest reaches a speed of 8.0m/s when going down a slope for 5.0 s? (b) how far does the skier travled in this tim
A typical four cylinder car engine has a mass of around 71.0 kg. Ifyou assume that the engine is made entirely of steel, it would havea heat capacity of 32.7 kJ/K.
A 8 kg box with initial speed 8 m/s slides across a floor and comes to a stop after 1.8 seconds. What is the coefficient of kinetic friction? How far does the box move?
The single proton that forms the nucleus of a hydrogen atom has a radius of approximately 1.0 X 10^(-13) cm {this number is in scientific notation}. The hydrogen atom itself has aradius of 52.9 pm.
What is the compression of the steel cube? That is, what is the small change in height of the steel cube due to the load it supports?