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a. How much heat needs to be taken from 0.5 kg of ethyl alcohol as a gas at its boiling point of 78.00 C to a solid at its freezing point -1140 C if the latent heat of vaporization is 850,000 J/kg and its latent heat of fusion is 104,000 J/kg, and the specific heat is 2400 J/(kg C).
b. If an piece of Iron (c = 450 J/kg C) at 65.00 C is dropped into .250 kg of ethyl alcohol at 25.00 C and the final temperature of the two comes to 35.00 C what was the mass of the piece of iron?
c. If .35 kg of solid ethyl alcohol at -114.00 C is put in a large well insulated jug holding 2.5 kg of liquid ethyl alcohol initially at 35.00 C what will the final temperature be after all the solid form has melted and come to equilibrium?
A bicycle wheel (with very light spokes) of mass M and radius R is mounted on a light axel through its center. Write a statement of conservation of energy for this system
a 26.5 kg boy slides down a steep slide at a water park that is 10.9 m long and angled 75 degrees above the ground. what is the magnitude of the boys acceleration as he travels down the slide
If the bullet leaves the gun at a speed of 177 m/s, and misses by 1.02 m, at illustrate what angle should the gun be aimed so as to hit the target?
The question needed to answer this one is "An 800. kg race car has a coefficient of static friction of 0.98 with the road. What is the minimum radius of the turn
An airplane with a wing span of L = 27m flies horizontally at a location where the vertical component of the Earth's magnetic field is B = 6.0 x10 -5 T.
A 45.3-cm diameter disk rotates with a constant angular acceleration of 2.20 rad/s2. It starts from rest at t = 0, Find the linear velocity and tangential acceleration of P at t = 2.30 s
(a) What is the velocity of the boat at t = 18.89 s? (b) Find the total displacement of the boat.
A person pulls a toboggan for a distance of 41.6 m along the snow with a rope directed 33.8 ° above the snow. How much work is done on the toboggan by the tension force
Imagine that Earth is struck by a meteor with a mass of 5.23 x 1015 kg, and a speed of 8100 m/s. What speed would such a meteor give Earth in a head-on collision
Three concentric, thin, long conducting cylindrical shells have radii of 3.00 mm, 5.00 mm, and 6.00 mm, Find the capacitance per unit length of this configuration
at a given instatn in time, a traveling EM wave is noted to have its maximum magnetic field pointing west, what are the maximum values for the two fields
A soap film whose index of re%uFB02ecetion is 1.33 is suspended in air. When sunlight strikes the film nearly perpendicularly, two colors, Find the thickness of the film
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