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11 kilogram of ice at -10 °C is heated and melted into water until water reaches a temperature of 50 °C. Determine how much heat is needed for this operation? The hot water is mixed with 1 kilogram of steam at 108 °C. Determine the resulting temperature of the mixture? The latent heat of vaporization of steam is 540 kcal/kg. The specific heat of water is 4186 J/Kg/C. The latent heat of fusion of ice is 80kcal/kg.
a proton is injected at a speed of 1.0106 ms between two plates 5.0 cm apart. the proton subsequently accelerated
A stone is thrown vertically upward with a speed of 20.0m/s. how fast is it moving when it reaches aheight of 10.0m? how long is required to reach height ? why are there two answeres to (b) ?
A ray of light passes from air through dense flint glass andthen back into air. How far is the ray displaced as aresult of traveling through the glass
A simple refracting telescope provides large magnification by employing
A cube of side 15 cm floats at the surface between waterand oil. The oil has a density of 810 kg/m3. what is the buoyant force on the cube
A trap door, of length and width 1.55 m, is held open at an angle of 65.0° with respect to the floor. what is the torque exerted on the trap door by the rope
A mail bag with a mass of 124 kgis suspended by a vertical rope 8.0 mlong. How much work is done by the worker in moving the bag to thisposition
A guitar string is 90.0 cm long and has a mass of 3.27g . From the bridge to the support post (=?) is 60.0 cm and the string is under a tension of 514 N
Assume that you hear a clap of thunder 16.9 s after seeing the associated lightning stroke. The speed of sound waves in air is 343 m/s and the speed of light is 3.00 X 10 8 m/s. How far are you from the lightning stroke?
A 2.0cm -tall candle flame is 2.0 m from a wall. You happen to have a lens with a focal length of 42cm, For each location, what is the height of the image
in a certain region of space the electric potential is vx y z axy - bx5 cy where a b and c are positive constants. a
A 190 pF capacitor is charged to a potential difference of 120 V, and the charging battery is disconnected. The capacitor is then connected in parallel with a second (initially uncharged) capacitor. If the measured potential difference drops to 100 V..
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