Determining the magnitude of the magnetic field
A long, straight wire (radius = 2.5 mm) carries a current of 4.0 A distributed uniformly over a cross section perpendicular to the axis of the wire. What is the magnitude of the magnetic field at a distance of 1.2 mm from the axis of the wire?
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A roller coaster at the top of a 39.0m high vertical loop is traveling 13.8m/s. Find the maximum speed of the cars as they move through the bottom of the loop.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution before the addition of any HNO3. The Kb of NH3 is 1.8 × 10-5.
A rolling wheel of radius r has translational velocity v as well as angular velocity w. Combine these equations to find an expression for w in terms of v.
Describe several important historical Roman figures and then explain their significance in the rise of Roman power in the Mediterranean.(Write 200 words,please.)
What is the pH change of a 0.270M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.145M with no change in volume?
The aluminum wire used for some of these lines has a cross-sectional area of 4.60 10-4 m2. What is the resistance of ten kilometers of this wire?
How would you classically condition an adventuresome 2-year-old to be more fearful of running across a busy street near her house? Be sure to identify the US, CS, UR, and CR.
what volume of 0.200M hcl must be added to 250mL of 0.300M sodium mandelate to produce a buffer of solution with a pH of 3.37?
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