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You have a 96.1-cm-long copper rod with a rectangular cross section of dimensions 5.47 cm by 7.39 cm. You maintain the ends of the rod at 53.9°C and 83.7°C, but otherwise insulate the rod from its environment. Find the heat current* through the rod. The thermal conductivity of copper is 385 W/(m·K).
What stage of the scientific method would someone be at if they make a prediction that drinking alcohol will make people more violent throughout a sporting event.
The lens of an endoscope is carefully matched such that the light ray from the edge of the lens enters the fiber at an angle. What focal length should the lens have
calculate the speed of an electron that is accelerated through the same potential difference, and Calculate the speed of a proton
Sirius has a luminosity of 8.4 * 10^27 Watts and a mass of 2.1 times the mass of the Sun, How much hydrogen does Sirius convert into helium each second
A fireman d = 46.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 38.0°, at what height will the stream of water strike the building
Consider a Boeing 777-200 airplane of wing span 60.93 m cruising horizontally at Mach 0.785 (about 828 km/h) due north in a region where the earth's magnetic field is .98*10
What was the speed of the car when the brakes were applied.
A Dodge Caravan has a speed of 50 mph and an acceleration of 2 mph second. A Ford Taurus has a speed of 55 mph and an acceleration of 1 (mph) per second. Which car has the higher speed after 10 seconds have elapsed?
Using their ship’s engine, they pull on the asteroid with a force of 490 N. Initially the tug and the asteroid are at rest, 450 m apart. Explain how much time does it take for the ship and the asteroid to meet?
An ion accelerated through a potential difference of 102 V experiences an increase in kinetic energy of 3.01 × 10?17 J
What is the magnetic field strength. Consider a ladder 5 meters tall, and a 150 kg weight on top of it. The ladder is leaning against the wall.
At t=0, a proton is moving with the speed of 5.5×10^5 m/s at an angle of 30 degrees from the x-axis, as shown in the figure. A magnetic field of magnitude 1.5 T is pointing in the positive y-direction. What would be the y-coordinate of the proton ten..
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