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A 98-g piece of copper is heated in a furnace to a temperature tC. The copper is then inserted into a 150-g copper calorimeter containing 207 g of water. The initial temperature of the water and calorimeter is 16°C, and the final temperature after equilibrium is established is 38° C. When the calorimeter and its contents are weighed, 1.2 g of water are found to have evaporated. What was the temperature tC?( in degrees celcius)
A miniblack hole formed as a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (Assume that your mass is 50).
A motorcycle has a constant speed of 25.0 m/s as it passes over the top of a hill whose radius of curvature is 118 m, Find the centripetal force that acts on the cycle
The free-fall acceleration on Mars is 3.7 m/s2. (a) What length pendulum has a period of 1.8-s on Earth? cm (b) What length pendulum would have a 1.8-s period on Mars? cm An object is suspended from a spring with force constant 10 N/m
question1two acrobats each of 60.0 kg launch themselves together from a swing holdings hands. their velocity at launch
Over a 30-day period a power plant generates an average of 691 MW of electrical power and 1127 MW of waste heat, how much mass is converted into energy
A Doppler ultrasound unit is used to measure the motion of blood in a patientâ€TMs artery. What is the maximum speed of the blood in the artery
imagine dropping a soccer ball. the first bounce will be the highest eand each bounce after that will be lower until
the 3.0 kg mass from parts a and b above is separated into 1.5 kg pieces. one of these is moved 10cm in the y
assume you are carrying out the conversion of 1-bromobutane to 1-butane. how could you use infrared spectroscopy ir to
Suppose a ping-pong ball and a bowling ball are rolling toward you with the same momentum, and you exert the same average force in stopping each of them.
a ladder of length l = 2.2 m and mass m = 14.0 kg rests on a floor with coefficient of static friction ?s = 0.53. what is the normal force the floor exerts on the ladder
a 5 kg. fish swimming at 1 m/s swallows a 1 kg. What is the velocity of the smaller fish before lunch
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