University Physics with Modern Physics 15th. Edition by HUGH D. YOUNG;ROGER A. FREEDMAN | 9781292314730 | 1292314737 | Holooly

University Physics with Modern Physics

491 SOLVED PROBLEMS

Question: 5.12

Two objects with the same magnitude of acceleration Figure 5.15a shows an air-track glider with mass m1 moving on a level, frictionless air track in the physics lab. The glider is connected to a lab weight with mass m2 by a light, flexible, nonstretching string that passes over a stationary, ...

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IDENTIFY and SET UP The glider and weight are acce...

Question: 24.4

A cylindrical capacitor Two long, coaxial cylindrical conductors are separated by vacuum (Fig. 24.6). The inner cylinder has outer radius ra and linear charge density +λ. The outer cylinder has inner radius rb and linear charge density -λ. Find the capacitance per unit length for this capacitor. ...

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IDENTIFY and SET UP As in Example 24.3, we use the...

Question: 22.10

Charge on a hollow sphere A thin-walled, hollow sphere of radius 0.250 m has an unknown charge distributed uniformly over its surface. At a distance of 0.300 m from the center of the sphere, the electric field points radially inward and has magnitude 1.80 × 10² N/C. How much charge is on the ...

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IDENTIFY and SET UP The charge distribution is sph...

Question: 20.9

Entropy and the Carnot cycle For the Carnot engine in Example 20.2 (Section 20.6), what is the total entropy change during one cycle? ...

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IDENTIFY and SET UP All four steps in the Carnot c...

Question: 20.4

Analyzing a Carnot refrigerator If the cycle described in Example 20.3 is run backward as a refrigerator, what is its coefficient of performance? ...

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IDENTIFY and SET UP This problem uses the ideas of...

Question: 8.10

An elastic straight-line collision We repeat the air-track collision of Example 8.5 (Section 8.2), but now we add ideal spring bumpers to the gliders so that the collision is elastic. What are the final velocities of the gliders? ...

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IDENTIFY and SET UP The net external force on the ...

Question: 8.6

Collision in a horizontal plane Figure 8.14a shows two battling robots on a frictionless surface. Robot A, with mass 20 kg, initially moves at 2.0 m/s parallel to the x-axis. It collides with robot B, which has mass 12 kg and is initially at rest. After the collision, robot A moves at 1.0 m/s in a ...

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IDENTIFY and SET UP There are no horizontal extern...

Question: 8.7

A completely inelastic collision We repeat the collision described in Example 8.5 (Section 8.2), but this time equip the gliders so that they stick together when they collide. Find the common final x-velocity, and compare the initial and final kinetic energies of the system. ...

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IDENTIFY and SET UP There are no external forces i...

Question: 8.8

The ballistic pendulum Figure 8.19 shows a ballistic pendulum, a simple system for measuring the speed of a bullet. A bullet of mass mB makes a completely inelastic collision with a block of wood of mass mW, which is suspended like a pendulum. After the impact, the block swings up to a maximum ...

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IDENTIFY We'll analyze this event in two stages: (...

Question: 8.9

An automobile collision A 1000 kg car traveling north at 15 m/s collides with a 2000 kg truck traveling east at 10 m/s. The occupants, wearing seat belts, are uninjured, but the two vehicles move away from the impact point as one. The insurance adjustor asks you to find the velocity of the wreckage ...

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IDENTIFY and SET UP Any horizontal external forces...

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