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Problem: A black wood stove has a surface area of 1.10 m2 and a surface temperature of 138°C. What is the net rate at which heat is radiated into the room? The room temperature is 20.0°C. Stefan-Boltzmann constant is 5.670 × 10-8 W/(m2·K4). Please answer the following question.
A tube with a 3.0-mm radius has ions flowing through it along its length. To determine the rate at which the charge is being moved through the tube, what is the magnitude of the current flowing through the tube
A vertical spring has one end attached to the ceiling and a 2.50-kg fish attached to the other one. find how fast the fish is moving after it drops 20.0 cm
A 12 kg runaway grocery cart runs into a spring with spring constant 300 N/m and compresses it by 70 cm.What was the speed of the cart just before it hit spring.
a ski trail makes a vertical descent of 78.0 m as shown in the figure below . a novice skier unable to control his
a speeder passes a parked police car at a constant speed of 21.1 ms. at that instant the police car starts from rest
A loaded ore car has a mass of 955 kilogram and rolls on rails with negligible friction. Find what total energy transfers out of the motor by work by the time the car moves off the end of the track, which is of length 1300 meter
A 2.6-kg cart is rolling along a frictionless, horizontal track towards a 1.4-kg cart that is held initially at rest. What is the total momentum of the system of the two carts at this instant
The block moves .600m up along the plane with no friction while the force F with magnitude of 200.0 N is acting on it. What is the work done with the net force acting on the block? What is the work done on the block with the gravitational field?
A thin glass rod forms a semicircle of radius r = 3.03 cm. Charge is uniformly distributed along the rod, with +q = 1.05 pC in the upper half and -q = -1.05 pC in the lower half
Use the work kinetic energy theorem to find the blocks final speed.
Rigel, a bluish-white star in Orion, radiates with a peak wavelength of 145 nm. Find the temperature of Rigel's surface
If a salvage worker accidentally drops a filled, sealed barrel overboard, it will float in the seawater. Find fraction of its volume will be above water surface
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