Essentials of College Physics 1st. Edition by Raymond A. Serway, Chris Vuille | 9780495106197 | 495106194 | Holooly

Essentials of College Physics

243 SOLVED PROBLEMS

Question: 11.8

Armageddon! Goal Link mechanical energy to thermal energy, phase changes, and the ideal gas law to create an estimate. Problem A comet half a kilometer in radius consisting of ice at 273 K hits Earth at a speed of 4.00 × 10^4 m/s. For simplicity, assume that all the kinetic energy converts to ...

Verified Answer:

(a) Find the volume and mass of the ice. Apply the...

Question: 17.4

A Platinum Resistance Thermometer GOAL Apply the temperature dependence of resistance. PROBLEM A resistance thermometer, which measures temperature by measuring the change in resistance of a conductor, is made of platinum and has a resistance of 50.0 Ω at 20.0°C. (a) When the device is immersed in ...

Verified Answer:

(a) Find the melting point of indium. Solve Equati...

Question: 24.7

A Diffraction Grating GOAL Calculate different-order principal maxima for a diffraction grating. PROBLEM Monochromatic light from a helium–neon laser (λ = 632.8 nm) is incident normally on a diffraction grating containing 6.00 × 10³ lines/cm. Find the angles at which one would observe the ...

Verified Answer:

Invert the number of lines per centimeter to obtai...

Question: 23.1

A man 1.80 m tall stands in front of a mirror and sees his full height, no more and no less. If his eyes are 0.14 m from the top of his head, what is the minimum height of the mirror? ...

Verified Answer:

We need to find BE, which equals d. Relate this le...

Question: 6.4

The Ballistic Pendulum Goal Combine the concepts of conservation of energy and conservation of momentum in inelastic collisions. Problem The ballistic pendulum (Fig. 6.10a) is a device used to measure the speed of a fast-moving projectile such as a bullet. The bullet is fired into a large block of ...

Verified Answer:

Use conservation of momentum, and substitute the k...

Question: A.1

A ball is dropped from the top of a building 50.0 m tall. How long does it take for the ball to fall to a height of 25.0 m? ...

Verified Answer:

First, write the general ballistics equation for t...

Question: A.2

A block of mass m slides over a frictionless surface in the positive x-direction. It encounters a patch of roughness having coefficient of kinetic friction µk. If the rough patch has length Δx, find the speed of the block after leaving the patch. ...

Verified Answer:

Using the work–energy theorem, we have

\fr...

Question: A.4

A ball is projected upwards at 16.0 m/s. Use the quadratic formula to determine the time necessary for it to reach a height of 8.00 m above the point of release. ...

Verified Answer:

From the discussion of ballistics in Chapter 2, we...

Question: A.5

Suppose the electrical resistance of a metal wire is 5.00 Ω at a temperature of 20.0°C and 6.14 Ω at 80.0°C. Assuming that the resistance changes linearly, what is the resistance of the wire at 60.0°C? ...

Verified Answer:

Find the equation of the line describing the resis...

Question: A.6

Solve the following two simultaneous equations: (1) 5x + y = -8 (2) 2x – 2y = 4 ...

Verified Answer:

From (2), we find that x = y + 2. Substitution of ...

Loading...