Mastering Physics Solutions: A Wire and a Compass

Mastering Physics Solutions: A Wire and a Compass

On March 6, 2013, in Chapter 19: Magnetism, by Mastering Physics Solutions

Part A = It is smaller
Part B = It is larger

If the wire is lowered farther from the compass, how does the new angle of deflection of the north pole of the compass needle compare to its initial deflection?
With the wire back at its initial location, you connect a second identical battery in series with the first one. When you close the switch, how does the new angle of deflection of the north pole of the compass needle compare to its initial deflection?

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Mastering Physics Solutions: Problem 26.67

Mastering Physics Solutions: Problem 26.67

On March 5, 2013, in Chapter 15: Electric Charge, Forces, and Fields, by Mastering Physics Solutions

Part A = 180 nC m Click to use the calculator/solver for this part of the problem

An electric field E = 100,000i N/C causes the 5.0 g point charge in the figure to hang at a 20° angle.
What is the charge on the ball?

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Mastering Physics Solutions: Magnetic Force on a Bent Wire Conceptual Question

Mastering Physics Solutions: Magnetic Force on a Bent Wire Conceptual Question

On March 3, 2013, in Chapter 19: Magnetism, by Mastering Physics Solutions

Part A = +y
Part B = 0
Part C = +x
Part D = -y
Part E = 0
Part F = -y
Part G = -x

The bent wire circuit shown in the figure is in a region of space with a uniform magnetic field in the +z direction.
Determine the direction of the magnetic force along segment 1, which carries current in the -x direction.
Determine the direction of the magnetic force along segment 2, which carries current in the -z direction.
etc.

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Mastering Physics Solutions: Cerenkov Radiation II

Mastering Physics Solutions: Cerenkov Radiation II

On March 2, 2013, in Chapter 22: Reflection and Refraction of Light, by Mastering Physics Solutions

Part A = θ = cos^-1(c/(nv))
Part B = aerogel
Part C = v = 0.995 c Click to use the calculator/solver for this part of the problem
Part D = 0.97 c

If a particle is traveling straight through a material with index of refraction n at a speed v, what is the angle θ between the vector of the propagating Cerenkov radiation and the vector in the direction of the propagating particle?
Use these constraints and the equation for θ from Part A to determine which of the following substrate materials is best suited to giving you the greatest precision in determining particle velocity
What is the highest velocity at which a charged particle can be accurately measured to be below the speed of light in vacuum (c)
What is the lowest velocity vmin that a charged particle can have and still emit Cerenkov radiation in the aerogel?

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Mastering Physics Solutions: Force between Capacitor Plates

Mastering Physics Solutions: Force between Capacitor Plates

On March 2, 2013, in Chapter 16: Electric Potential, Energy, and Capacitance, by Mastering Physics Solutions

Part A = F(V) = 1/2 * Aε0(V^2 / d^2)

Find F(V), the magnitude of the force each plate experiences due to the other plate as a function of V, the potential drop across the capacitor.

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Mastering Physics Solutions: Energy Required to Lift a Heavy Box

Mastering Physics Solutions: Energy Required to Lift a Heavy Box

On March 2, 2013, in Chapter 05: Work and Energy, by Mastering Physics Solutions

Part A = F = mg/2
Part B = Wd / Wp = 1.00

What is the magnitude F of the upward force you must apply to the rope to start raising the box with constant velocity?

What is Wd / Wp, the ratio of the work done lifting the box directly to the work done lifting the box with a pulley?

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