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A 120cm3 box contains helium at a pressure of 1.50atm and a temperature of 80.0?C. It is placed in thermal contact with a 210cm3box containing argon at a pressure of 4.00atm and a temperature of 420?C.
a) What is the initial thermal energy of each gas?
b) What is the final thermal energy of each gas?
c) How much heat is transfered?
d) What is the final tempature?
e) What is the final pressure in each box?
A 310-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,150 A, how many years does it take one electron to travel the full length of the cable
Assume the sound speed in air is 343 m/s. A parachutist leaps from a hovering helicopter and after 3.1s of free fall shouts back toward the helicopter
And if the plane could fly without this pilot, how much force would the plane require to maintain the equal acceleration?
Small spheres of diameter 0.92 mm fall through 20°C water with a terminal speed of 0.90 cm/s. Calculate the density of the spheres
What impulse Ft should be supplied to bring the ball to rest? If the ball is stopped in 0.03 s, what is the average force of the ball on the catcher's hand.
A steel cable with total length,52 mand mass,130 kgis connected to two poles. Calculate the wavelength of the resulting wave on the cable
A parallel-plate air-filled capacitor having area 50 cm2 and plate spacing 1.3 mm is charged to a potential difference of 710 V, find the energy density between the plates
A Van de Graaff accelerator is essentially a parallel plate capacitor. Such a machine is changed by an electrical potential of 2.5 x 10^6 volts. What is the energy density stored in the field
We can reasonably model a 90-W incandescent lightbulb as a sphere 5.5cm in diameter. find the visible light intensity at the surface of the bulb
Calculate the magnitude of the electric field at one corner of a square 1.43
The triceps muscle in the back of the upper arm extends the forearm. What is the moment of inertia of the boxer's forearm
A charged particle A exerts a force of 2.75 ?N to the right on charged particle B when the particles are 12.0 mm apart. Particle B moves straight away from A to make the distance between them 17.6 mm. What vector force does particle B then exert o..
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