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When 80.0 g of hot aluminum is dropped intoa 150 g glass beaker initially holding 200g of water at 6.00 oC, thesystem reaches an equilibrium temperature of 10.0oC. What was the initial temperature of the aluminum?
Three resistors of resistance 2 ?, 3 ? and 4 ? are connected in series with a 10 V battery. In which resistor is the greatest power dissipated
a bullet weighing 50 grams and traveling at 200 ms is shot into a stationary block of wood weighing 4 kg where it
A 10,000 kg railroad car is rolling at 1.5 m/s when a 4000 kg load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded
A rocket of total mass 3180 kg is traveling in outer space with a velocity of 115 m/s toward the Sun. how much mass must be expelled
A 1.02mF capacitor is connected in series with an AC source with amplitude 50V and angular frequecy 40 rad/s. determine the amplitude of the current through this circuit
What must be the value of the putty mass m so that the amplitude after the collision is one-half the original amplitude.
Air conditioners are rated by their coefficient of performance at 60F inside temperature and 96F outside temperature. What is the maximum possible coefficient of performance
How to find out the force of friction
A Goodyear blimp typically contains 6580 m3 of helium(He) at an absolute pressure of 1.10 x 105 Pa. Thetemperature of the helium is 275 K. What is the mass (in kg) of the helium in the blimp?
wo people start at the same place and walk around a circular lake in opposite directions. How long will it be before they meet
Conservation of Energy A 100kg skier at the top of a 2km high mountain tucks the whole thing but only gets a final speed of 50m/s
when a piece of solid cu metal is put into an aqueous solution of hcl a gas of hcl a gas evolves and the solution turns
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