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A calorimeter consists of a massless beaker that contains 25.0 grams of solid water (i.e., ice) at -30oC. Then 200 grams of iron at 70.0 oC are added to the calorimeter.
a) Find the final temperature of the calorimeter after equilibrium is reached.
b) If the final temperature is 0oC, what fraction of the ice is melted?
A 9410-kg car is traveling at 29.7 m/s when the driver decides to exit the freeway by going up the ramp. compute the Magnitude of the average drag force exerted on the car?
You drive west at 70km/h for 24 min , then follow a road that goes 38 degrees south of west, driving at 96 km/h for another 36 min. Find your average velocity for the trip
A hole in an aluminum plate has a diameter of 1.179 centimeter at 24oC. Find what is the diameter of the hole at 199oC
A 60-Hz ac voltage source has a maximum voltage of 120 V. A student wants to determine the voltage 1/180s after it is zero. Determine all the possible voltages
A large box whose mass is 12 kilogram rests on a frictionless floor. Obtain the acceleration of the box across the floor
A skier moving at 4.60m/s encounters a long, rough horizontal patch of snow having coefficient of kinetic friction 0.220 with her skis. How far does she travel on this patch before stopping?
a 100 kg car traveling at 20 ms collides with a 100 kg car traveling at 8 ms in opposite directiona if the two cars
a worker pushes a 1500N crate with a horizontal force of 345Na distance of 24 meters. How much work is done by the floor on the crate
A pump is required to lift a mass of 770 kg of water per minute from a well of depth 14.2 m and eject it with a speed of 17.5 m/s. How much kinetic energy does the pump give the ejected water
A 41.9 g object is attached to a horizontal spring with a spring constant of 10.8 N/m, What is the velocity of the object when it is halfway to the equilibrium position
A wheel experiences a time dependant angular acceleration given by ?(t) = 3 + 0.333t^3. Derive an expression for the angular velocity as a function of time
two 80.0 kg astronauts are floating in outer space. if they are 10.0 m apart, what is the gravitational attraction between them
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