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Determine what is the final temperature of the tea when 100 gram of boiling tea is poured into a 250 gram glass tea cup (specific heat = 0.1 cal/goC) at 25oC?
a nylon rope of length 25.0 is under a tension of 1.30 x 10^4 N. The total mass of this rope is 2.30 kg. how long does it take to reach the other end
A woman with mass of 58 kg stands at the rim of a horizontal table having a moment of inertia of 430 kgm2 and a radius of 2.1 m. The turntable is initially at rest and is free to rotate about a frictionless, vertical axis through its center.
A rotating cylinder about 16- {rm km} long and 6.8 -km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it would experience the similar acceleration because of gravity as on Eart..
What is the potential difference between the terminals of a battery that can impart 6.8×10?19 \rm J to each electron that moves between the terminals
A black wood stove with surface area 4.6 m^2 is made from cast iron 4.0 mm thick. What is the rate of heat loss by radiation from the stove
The electric motor of a heat pump transfers energy as heat from the outdoors, which is at -7.4°C, to a room, which is at 15°C. If the heat pump were a Carnot heat pump (a Carnot engine working in reverse), how much energy would be transferred as heat..
An ideal monatomic gas at first has a temperature of 311K and a pressure of 7.57atm. It is to expand from volume 571 cm3 to volume 1390 cm3.
Block C has a mass of 3.0 kilogram on a flat surface. It has a block D attached by a pulley system. Determine what is the mass of D
A solid sphere of mass m = 0.5 kg and radius r = 0.2 m, initially at rest, has a torque 9in units of N per m) applied to it about its CM. what is the angular velocity of the sphere
The 4 block in the figure is attached to a vertical rod by means of two strings. When the system rotates about the axis of the rod, the strings are extended and the tension in the upper string is 77.
Just after opening a parachute of negligible mass, a parachutist of mass 82.5 kg experiences an instantaneous upward acceleration of 1.15 m/s2. Find the force of the air on the parachute
An automobile having a mass of 1750 kg is placed on a hydraulic lift in a garage. The piston lifting the car is 0.235 m in diameter. What is the force exerted on the small piston
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