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A 40-cm-long, 800-W electric resistance heating element with diameter 0.5 cm and surface temperature 120°C is immersed in 75 kg of water initially at 20°C. Determine how long it will take for this heater to raise the water temperature to 80°C. Also, determine the convection heat transfer coefficients at the beginning and at the end of the heating process.
A solid disk of radius 6.30cm and mass 1.15kg , which is rolling at a speed of 1.50m/s , How long will it take for the disk to come to a stop
What is the net charge inside the sphere.
A mule uses a rope to pull a box that weights3.0x102N across a level surface with constant velocity. What is the normal force of the floor on the box
a circuit with c1610-6f c2310-6 and potential difference20v. capacitor c1 is first charged by closing switch s1 switch
A 18.0 kg block is being pushed up a ramp by a force FP = 150 N acting horizontally. Determine the work done on the block by the frictional force
A 10kg object has only two forces acting on it. Both forces have a magnitude of 10 N, and the angle between the forces is 60 degrees. What is the magnitude of this objects acceleration
A golfer tees off from the top of a rise, giving the golf ball an initial velocity of 43 m/s at an angle of 30o above the horizontal. How high is the rise above the fairway
If no, then what will happen if 30 kilocalories of heat is added to the water? Give a numerical result as part of your answer.
Susan, driving north at 45 mph, and Shawn, driving east at 50 mph, are approaching an intersection. Find Shawn speed relative to Susan reference frame
A generator uses a coil that has 80 turns and a 0.40-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. Assuming that each turn of the coil is a square (anapproximation), decide the length of the wire..
What would be the fundamental frequency on a piece of the same string that is twice as long and has four times the tension
Manufacturers of headache remedies routinely claim that their own brands are more potent pain relievers than the competing brands. Find the number of molecules of pain reliever in the standard dose of Tylenol
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