/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q3Q When Paris was shelled from 100 ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 4: Q3Q (page 82)

When Paris was shelled from 100 km away with the WWI long-range artillery piece 鈥淏ig Bertha,鈥� the shells were fired at an angle greater than to give them a greater range, possibly even twice as long as at 45潞. Does that result mean that the air density at high altitudes increases with altitude or decreases?

Short Answer

Expert verified

At higher altitudes air density decreases.

Step by step solution

01

Given information:

胃=45o

d=100km

02

Understanding the given information

The problem is based on the projectile of an object. A projectile is an object upon which the only force acting is gravity. An object dropped from rest is a projectile (provided that the influence of air resistance is negligible).

03

To The magnitude of Betty’s force.

When the launch angle of the projectile increases that means it will move at a higher altitude. In light of the fact that shooting the shell at a larger angle increases its horizontal range, it follows that the shell moves more quickly at higher altitudes than at lower ones.

This indicates that at greater altitudes than at lower altitudes, the shell encounters less air resistance.

This indicates that at higher altitude air density decreases as you ascend.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A plane flies 483kmeast from city A to city B in45minand then966Kmsouth from city B to city C in1,5h. For the total trip, what are the (a)magnitude and(b)direction of the plane鈥檚 displacement, the(c)magnitude and(d)direction of the average velocity, and(e)it鈥檚 average speed?

A golf ball is struck at ground level. The speed of the golf ball as a function of the time is shown in Figure, wheret=0at the instant the ball is struck. The scaling on the vertical axis is set byva=19m/sandvb=31m/s. (a) How far does the golf ball travel horizontally before returning to ground level? (b) What is the maximum height above ground level attained by the ball?

An airplane flying horizontally at a constant speed of 350 km/h over level ground releases a bundle of food supplies. Ignore the effect of the air on the bundle. What are the bundle鈥檚 initial (a) vertical and (b) horizontal components of velocity? (c) What is its horizontal component of velocity just before hitting the ground? (d) If the airplane鈥檚 speed were, instead, 450 km/h , would the time of fall be longer, shorter, or the same?

A ball is shot from ground level over level ground at a certain initial speed. Figure 4-27 gives the range R of the ball versus its launch angle u0. Rank the three lettered points on the plot according to (a) the total flight time of the ball and (b) the ball鈥檚 speed at maximum height, greatest first.

During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs.Figure 4-51 shows a cross section of Mt. Fuji, in Japan. (a) At what initial speed would a bomb have to be ejected, at angle胃0=35掳to the horizontal, from the vent at Ain order to fall at the foot of the volcano at B,at vertical distance h=3.30km and horizontal distanced=9.40km? Ignore, for the moment, the effects of air on the bomb鈥檚 travel. (b) What would be the time of flight? (c) Would the effect of the air increase or decrease your answer in (a)?
See all solutions

Recommended explanations on Physics Textbooks

Fields in Physics

Read Explanation

Thermodynamics

Read Explanation

Wave Optics

Read Explanation

Engineering Physics

Read Explanation

Quantum Physics

Read Explanation

Space Physics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.