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Consider the expansion of 60.0 moles of a monatomic ideal gas along processes 1 and 2 in the figure below. In process 1 the gas is heated at constant volume from an initial pressure of Pi = 95 kPa to a final pressure of Pf = 190 kPa. In process 2 the gas expands at constant pressure from an initial volume of Vi = 0.85 m3 to a final volume of Vf = 2.55 m3. (a) How much heat is added to the gas during these two processes? process 1 - 120 kJ process 2 - 810 kJ (b) How much work does the gas do during this expansion? (c) What is the change in the internal energy of the gas?
Were there significant differences between the groups. Give the relevant stastical data to support your answer and what is the confidence interval associated with your answer to item # 1?
If M is the molar mass, R the gas constant, T the temperature, and P its pressure, which of the following expressions represents the density of a gas
An 18.7 cm screwdriver is used to pry open a can of paint. If the axis of rotation is 3.07 cm from the end of the screwdriver blade, what force is applied to the lid
At a coal-burning power plant a steam turbine is operated with a power output of 465 MW. The thermal efficiency of the power plant is 31.6%. (a) At what rate is heat discarded to the environment by this power plant? (b) At what rate must heat be supp..
After the genomes of multiple Homo neanderthalensis individuals were sequenced,
A single-turn square loop of wire, 2.00 cm on each edge, carries a clockwise current of 0.170 A. Find the force on each side of the loop
A 67.0-kg person throws a 0.0500-kg snowball forward with a ground speed of 25.0 m/s. A second person, with a mass of 59.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.10 m/s, and..
A long solenoid that has 940 turns uniformly distributed over a length of 0.390 m produces a magnetic field of magnitude 1.00 10-4 T at its center. What current is required in the windings for that to occur
In using the data from study A to make predictions, what percent of the time would you expect predictions to be exactly correct?
The protein dynein powers the flagella that propel some unicellular organism. biophysicists have found that dynein is intrinsically oscillatory and that it exerts peak forces of about 1.0 pN when it attaches to structures called microtubules. thee re..
A 10 kg box is being pushed up a slippery ramp at and angle of 10 degrees. What force does the man need to apply to the box to keep it traveling up the ramp at a steady speed
In a certain region, the earth's magnetic field has a magnitude of 4.8 x 10-5 T and is directed north at an angle of 66° below the horizontal. Determine the bullet's electric charge
A person sees a distant lightning strike, then 4.5 seconds later he hears the thunder clap. If it is 35 degrees Celsius, how far away was the lightning strike
Suppose that a radioactive sample contains equal numbers of two radioactive nuclides A and B at t = 0. Find the ratio of the decay rates or activities RA/RB
A 1.00-kg block of ice is placed against a horizontal spring that has force constant k = 175 N/m and is compressed 0.021 m. What is the speed of the block after it leaves the spring
A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, find the average force exerted on the ball by the club
q1. a hunter aims directly at a target on the same level 84.2m. if the bullet leaves the gun at a speed of 193 ms by
Light of a wavelength of 661.1 nm is received from a star that is emitting light of wavelength of 659.6 nm. How fast is the star moving relative to the earth
What would be the equilibrium temperature when a 256 g block of copper at 314 °C is placed in a 140 g aluminium calorimeter cup containing 827 g of water at 11.5 °C.
When an archer pulls an arrow back in his bow, he is storing potential energy in the stretched bow. Compute the potential energy stored in the bow
The place you get your hair cut has two nearly parallel mirrors 8.00apart. As you sit in the chair, your head is 2.50 from the nearer mirror. Looking toward this mirror, you first see your face and then, farther away, the back of your head. (The m..
You have a small electromagnet that consumes 300 W from a residential circuit delivering 120 V at 60.0 Hz. find the internal resistance of the electromagnet
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