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At a fabrication plant, a hot metal forging has a mass of 78 kg and a specific heat capacity of 430J/(kg·°C). To harden it, the forging is immersed in 710kg of oil that has a temperature of 32°C and a specific heat capacity of 3000 J/(kg·°C) . The final temperature of the oil and forging at thermal equilibrium is 47°C. Assuming that heat flows only among the forging and the oil, decide the initial temperature of the forging.
If an object is moving with constant momentum ‹ 8, ?14, ?4 › kg · m/s, What is the net force acting on the object
A rectangular loop of wire with width 0.4 cm and length 0.6 cm is oriented with the normal to the face of the loop, Find the magnetic flux through the loop
One hectare is defined as 10^4 m^2. (Meaning 10 to the 4th power etc) One acre is 4x10^4 ft^2. How many acres are in one hectare
A particular playground ride acts like a horizontally rotatingturntable, with a moment of inertia of 1000.0 kg*m2. what is the final angular speed (inrad/s) of the child
A runner covers one lap of a circular track 40.0m in diameter in 63.3s. what were her average velocity(in m/s) for that half-lap
the wire in a heating element of an electric stove burner has a 0.75-m effective length and a 2.010-6 m cross-section
A rectangular block of ice 9.00 m on each side and 0.7 m thick floats in sea water. The density of the sea water is 1025kg/m3. The density of ice is 919kg/m3. How high does the top of the ice block float above the water level.
A solid sphere ( moment of inertia, I=2/5MR^2) is rolling smoothly with a speed of 6.0m/s pom a horizontal surface. How fast will the sphere be rolling
if a car increases its speed from 14.2 mph to 42.6 mph by what factor does the kinetic energy of the car increase?
A common capacitor found in the lab is in the form of a cylinder of length 2.5 cm. Suppose it is an air filled cylindrical capacitor with radii 1.4 cm and 1.5 cm. What is the value of the capacitance
An 8.05 kg mass moving east at 13.7 m/s on a frictionless horizontal surface collides with a 11.3 kg mass that is initially at rest. What is the angle relative to the east
q1. a man pulls a crate of mass 75.0 kg across a level floor. he pulls with a force of 180.0 n at an angle of 26.0deg
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