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A 38 g block of ice is cooled to -84 ?C. It is added to 579 g of water in an 73 g copper calorimeter at a temperature of 22?C. Find the final temperature. The specific heat of copper is 387 J/kg · ?C and of ice is 2090 J/kg · ?C . The latent heat of fusion of water is 3.33 x 105 J/kg and its specific heat is 4186 J/kg · ?C . Answer in units of ?C.
A 100 meter length of steel changes temperature by 30 C during the course of a day. If the coeffcient of thermal expansion of steel is 12 parts per million per C, what is the change in length of the steel
Small airplane A is flying through a mature isolated air mass thunderstorm at a height of 5 km, while small airplane B is flying at 2 km through the same mature isolated air mass thunderstorm. Discuss any dangers each of these two airplanes might ..
Vector A has a magnitude of 9.10 units and makes an angle of 54.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods find the following.
a spherical capacitor is formed from two concentric spherical conducting shells separated by vacuum. the inner sphere
A metal cathode whose work function is 3.3 eV is illuminated with 15 microW of light having a wavelength of 300 nm. What current is measured in the experiment
At a certain location, the horizontal component of the earth's magnetic field is 2.2 x 10-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the proton.
You drive west at 74km/h for 25min , then follow a road that goes 41^\circ south of west, driving at 93km/h for another 36min. Find your average speed for the trip
The rod rotates with an angular speed of 150 radians/second about an axis that passes perpendicularly through its other end. Illustrate what is the magnetic moment of the rotating charge?
A long straight wire carrries a current I1 of 15 A. A rectangular coil with two sides parallel to the straight wire has sides 5 cm, what is the net force of the coil
(a) Using conservation of energy, find the speed of the object at the bottom of the inclined plane? (b) What is the coefficient of kinetic friction for the horizontal surface?
You hold a ruler that has a charge on its tip 6 cm above a small piece of tissue paper to see if it can be picked up. find the minimum charge required to pick up the tissue paper
Examine the flow over the supersonic airfoil illustrated in Fig., using shock-expansion theory. Assume that the Mach number =2.5, the chord length c = 1 m.
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