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An insulated Thermos contains 180 cm3 of hot coffee at 79.0°C. You put in a 14.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm3.
Water flows over a section of Niagara Falls at the rate of 1.1 x10^6 kg/s and falls 55 m. How much power is generated by the falling water.
if the airplane somehow continues to fly as if nothing happend, where is the engine relative to airplane at the moment the engine hits the ground.
Find out the gravitational potential energy
The other end of the spring braced against a post that was firmly anchored to the ship's frame. What was the speed of the cannon ball if the spring compressed 50cm as the cannon was fired.
A block of mass 1.90 kg is pushed 4.60 m along a frictionless horizontal table by a constant 16.0 N force directed 27.0° below the horizontal.
A gas has a volume of 3m3 when it is at the temperature of 23K. It's temperature now hoes up to 46K. WHat is it's new volume.
A horizontal force of 750 N is needed to overcome the force of static friction between a level floor and a 250 kg crate. What is the acceleration of the crate if the 750 N forces is maintained after the crate begins to move and coefficient of kine..
A dynamite blast at a quarry launches a rock straight upward, and 2.1s later it is rising at a rate of 14m/s. assuming air resistance has no effect on the rock, compute its speed.
What is the focal length of this mirror. If the object is 25 cm in front of the mirror, what is the image distance.
A spotlight is coated so that it won't transmit magenta light from its white-hot filament. What colour emerges from coated spotlight.
A spring has a spring constant = 40 N/m. It is compressed by a distance 10 cm. The mass of the cart is 300 grams. The angle of incline of the track is 20º.
while the airport sends out a rescue crew, how far will the crew have to fly to reach the aircraft if they fly in a straight line from Galisto?
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