Physics for Scientists and Engineers 6th. Edition by Raymond A. Serway, John W. Jewett | 9780534408428 | 534408427 | Holooly

Physics for Scientists and Engineers [EXP-46841]

537 SOLVED PROBLEMS

Question: 5.W I . 10

(A) What happens in this situation if the angle θ = 90°? (B) What happens if the mass m1 = 0?

Verified Answer:

\text { (A) If } \theta=90^{\circ} [/latex...

Question: 32.2

(A) Calculate the inductance of an air-core solenoid containing 300 turns if the length of the solenoid is 25.0 cm and its cross-sectional area is 4.00 cm^2. (B) Calculate the self-induced emf in the solenoid if the current it carries is decreasing at the rate of 50.0 A/s.

Verified Answer:

Using Equation 32.4, we obtain

L=\frac{N \...

Question: 27.3

(A) Calculate the resistance per unit length of a 22-gauge Nichrome wire, which has a radius of 0.321 mm. (B) If a potential difference of 10 V is maintained across a 1.0-m length of the Nichrome wire, what is the current in the wire?

Verified Answer:

The cross-sectional area of this wire is

A...

Question: 5.W I . 9

(A) Describe the motion of the system if the objects have equal masses, that is, m1 = m2. (B) Describe the motion of the system if one of the masses is much larger than the other, m1 >> m2.

Verified Answer:

(A) If we have the same mass on both sides, the sy...

Question: 12.5

(A) Estimate the magnitude of the force F a person must apply to a wheelchair’s main wheel to roll up over a sidewalk curb (Fig. 12.12a). This main wheel that comes in contact with the curb has a radius r, and the height of the curb is h. (B) Determine the magnitude and direction of R.

Verified Answer:

Normally, the person’s hands supply the required f...

Question: 2.6

(A) Estimate your average acceleration as you drive up the entrance ramp to an interstate highway.

Verified Answer:

This problem involves more than our usual amount o...

Question: 25.5

(A) Find an expression for the electric potential at a point P located on the perpendicular central axis of a uniformly charged ring of radius a and total charge Q. (B) Find an expression for the magnitude of the electric field at point P.

Verified Answer:

Figure 25.16, in which the ring is oriented so tha...

Question: 39.12

(A) Find the rest energy of a proton in electron volts. (B) If the total energy of a proton is three times its rest energy, what is the speed of the proton? (C) Determine the kinetic energy of the proton in electron volts. (D) What is the proton’s momentum?

Verified Answer:

(A) Using Equation 39.24,

E_{R}=m c^{2} [/...

Question: 17.1

(A) Find the speed of sound in water, which has a bulk modulus of 2.1 × 10^9 N/m^2 at a temperature of 0°C and a density of 1.00 × 10^3 kg/m^3. (B) Dolphins use sound waves to locate food. Experiments have shown that a dolphin can detect a 7.5-cm target 110 m away, even in murky water. For a bit of

Verified Answer:

Using Equation 17.1, we find that

v=\sqrt{...

Question: 32.3

(A) Find the time constant of the circuit shown in Figure 32.11a. (B) The switch in Figure 32.11a is closed at t = 0. Calculate the current in the circuit at t = 2.00 ms. (C) Compare the potential difference across the resistor with that across the inductor.

Verified Answer:

The time constant is given by Equation 32.8: [late...

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