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A 3.00- length of copper wire at 20 has a 1.20--long section with diameter 1.8 and a 1.80--long section with diameter 0.90 . There is a current of 2.5 in the 1.8 -diameter section. 1.What is the current in the 0.90 -diameter section? 2.What is the magnitude of in the 1.8 -diameter section? 3.What is the magnitude of in the 0.90 -diameter section? 4.What is the potential difference between the ends of the 3.00-length of wire?
What is the net upward force on an airplane wing of area 21.9 m2 if the speed of air flow is 293 m/s across the top of the wing and 278 m/s across the bottom
Two narrow slits, illuminated by light consisting of two distinct wavelengths, produce two overlapping colored interference patterns on a distant screen. What is the ratio of the two wavelengths
Visitors at a science museum are invited to sit in a chair to right of a full-length diverging lens (f1 = -3.06 m) and observe a friend sitting in a second chair, 1.84m to the left of the lens.
the distance between the slits in the two-slit experiment is 1.50 x 10^ -5 m. What is the distance on the screen between the central bright fringe and the 4th order bright fringe
An 8 Meter ladder is leaning against a frictionless wall making a 60 degree angle with the ground. What are the forces excreted on the ladder by the wall and the ground
A 0.2-kg ball is bounced against a wall. It hits the wall with a speed of 20 m/s at a 10 degree angle and rebounds elastically at a 10 degree angle
Imagine that we drop a block of mass m from a height h above the comparatively lightweight plate supported by a vertical spring with relaxed length L and spring constant k. From what value of h would we have to drop the block to compress spring to..
A game of tug of rope is being played. The rope is being pulled with a force of 18 N East and 20 N West. What is the net force on the rope
A spring oscillator is designed with a mass of 0.132 kg. It operates while immersed in a damping fluid, Find the required damping constant for the system
q1. a man pushes the lawn mower on a level lawn with a force of 240 n. if 40 percent of this force is directed downward
Two parallel metal rods form a plane inclined at 20 degrees to the horizontal. The upper end of the rods are connected together by a resistor of 166ohms, What is the maximum speed of the bar
Now, a second resistor R2 of 3.2x10^5 ? is connected in parallel to the existing resistor in the circuit, What will be the new time constant
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