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A 75 kilogram piece of metal has specific heat 430 J/kg°C and is initially at 950°C. To cool it down, it is dunked into 710 kilogram of oil that has a temperature of 32°C and specific heat of 2700 J/kg°C. Suppose that heat flows only between the oil and the metal, estimate what is the final temperature of the metal.
A block sits on a plate that in turn rests on the surface of a fluid, what is the pressure P in the fluid just below the plate
A force Farrowbold applied to an object of mass m1 produces an acceleration of 3.70 m/s2. find its acceleration under the action of the force Farrowbold
You drop 320 g of solid ice at ?35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, Find the final temperature of the system
a 40g clay ball going southeast at a 45 degree angle at 4m/s collides with a 30g clay ball moving to the west at 3.0 m/s. find the speed and direction of the resulting blob of clay
The maximum gauge pressure in a hydraulic lift is 17.0 atm. What is the largest size vehicle(kg) it can lift if the diameter ofthe output line i9s 28.0cm
When an electron moving through air has 5 MeV of energy, what is the ratio of the rates of energy loss by bremsstrahlung to that by collision? What is this ratio for lead?
A 43.0 mA current is carried by a uniformly wound air-core solenoid with 425 turns, a 11.5 mm diameter, and 12.5 cm length. Compute the magnetic field inside the solenoid
An object of mass 5.0 kg is projected into the air at a 55° angle. It hits the ground 3.9 s later. What is its change in momentum while it is in the air
a mass of 1000kg hangs at the end of a steel rod 5.0m in length. The diameter of the rod is .8 cm and young's modulus for the rod is 210,000NM/m^2. what is the elongation of the rod
A lamp (R = 151 ohms ), an electric heater (R = 24 ohms ), and a fan (R = 50 ohms ) are connected in parallel across a 119 V line. What power is expended in the heater
Suppose a cube of aluminum which is 1.00 cm on a side accumulates a net charge of +3.10 pC. (a) What percentage of the electrons originally in the cube was removed.
One kilowatt an hour (kWh) is the amount of work or energy generated when one kilowatt power is supplied for a time of one hour. Find the number of joules of energy in one kilowatt an hour
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