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An aluminium cup contains 225 g of water and a 40 g copper stirrer, all at 27°C. A 430 g sample of silver at an initial temperature of 87°C is placed in the water. The stirrer is utilized to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Compute the mass of the aluminium cup.
if a far sighted person has a near point that is 0.600 m from the eye what is the focal length f2 of the contact lenses
a centrifuge can be used to separate cells from a liquid. to increase the rate at which objects can be separated from
The drawing shows an adiabatically isolated cylinder that is divided initially into two identicalparts by an adiabatic partition. Both sides contain one mole of amonatomic ideal gas (γ=5/3) with the initial temperature being 525 K on the left and ..
A winch cable of negligible mass has a cross-sectional area of 1.6 cm2 and a length of 2.2 m. Young's modulus for the cable is 150 GN/m2. what is the oscillation frequency of the engine block at the end of the cable
The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 20°C. 20 Hz m 20000 Hz m
an attacker at the base of a castle wall 3.70 m high throws a rock straight up with a speed 8.30 ms from a height of
A tungsten target is struck by electrons that have been accelerated from rest through a 20.0-kV potential difference
A 83 kg solid sphere with a 19 cm radius is suspended by a vertical wire. What is the period of the oscillations that result when the sphere is then released
Circular Coils and Flux A circular coil has a10.3 cm radius and consists of44.0 closely wound turns of wire. An externally produced magnetic field of 3.00mT is perpendicular to the coil. If no current is in the coil, what magnetic flux links its turn..
A rifle with a weight of 20 N fires a 5.0-g bullet with a speed of 220 m/s. Find the recoil speed of the rifle
A dockworker applies a constant horizontal force of 85.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
A soccer ball is lofted toward the goal from a distance of 9.00 m. It has an initial velocity of 12.7 m/s and is kicked at an angle of 72.0 degrees above the horizontal. (a) When the ball crosses the goal line, how high will it be a..
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