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A laboratory technician drops a 0.0850-kg sample of unknown material, at a temperature of 100C , into a calorimeter. The calorimeter can, initially at 19.0C , is made of 0.150 kg of copper and contains 0.200 kg of water. The final temperature of the calorimeter can is 26.1C. Compute the specific heat capacity of the sample.
n air-filled spherical capacitor is constructed with inner and outer shell radii of 7.00 and 14.0 cm, respectively. Calculate the capacitance of the device
An LC circuit like the one in Figure CQ32.8 contains an 82.0 mH inductor and a 17.0 micro Farad capacitor that initially carries a 180 micro Coulomb charge. The switch is open for t
A potter's wheel, with rotational inertia 6.50 , is spinning freely at 16.0 . What is the subsequent angular speed of the wheel
8-90 Steam enters a turbine at 9 MPa, 600 degrees C, and 60 m/s and leaves at 20 kPa and 90 m/s with a moisture content of 5 percent. The turbine is not adequately insulated and it estimated that heat is lost from the turbine at a rate of 220 kW.
A monochromatic point source of light emits 5.5 W of electromagnetic power uniformly in all directions. Find the (magnitude of the) Poynting vector at a point situated at each of the following locations:
A spherical weather balloon is filled with hydrogen until its radius is 3.40 m. Its total mass including the instruments it carries is 10.0 kg. Find the buoyant force acting on the balloon
In astronomy, a parsec ( pc) is dened as the distance at which an object with a size of 1 astro-nomical unit (AU) would subtend an angle of 1 arc-second. Find the conversion factor between parsecs and astronomical units.
A car of mass m is on an icy driveway inclined at an angle ? = 16.0°, What is the car's speed at the bottom
In a circus performance, a monkey on a sled is given an initial speed of 4.6 m/s up a 23? incline. How far up the incline does the sled move
A block of silver, mass ms = 2.05 kg, is heated in a furnace to temperature Ts, but remains solid. It is now dropped on a block of ice, mass mi = 550 g and temperature Ti = 0o C. The combination reaches equilibrium at temperature Tf = 35.4 o C. Find ..
A stone is thrown horizontally at 65.0 from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2.00 intervals for the first 10.0. Calculate the horizontal and vertical positions at time = 2 .
An object is placed to the left of a convex lens and on the optical axis. find the magnification of the image formed by the lens
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