/*! 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} Q28P Many heavy nuclei are 鈥渁lpha e... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 2: Q28P (page 45)

Many heavy nuclei are 鈥渁lpha emitters鈥�: they emit an alpha particle, which is the historical name for the nucleus of a helium atom, which contains two protons. For example, a thorium nucleus containing 90 protons is an alpha-emitter. What element does thorium turn into as a result of emitting an alpha particle?

Short Answer

Expert verified

The element that thorium turns into as a result of emitting an alpha particle is Ra88.

Step by step solution

01

Identification of the given data

The given data is listed below as,

The alpha emitter is the thorium that contains about 90 protons.

02

Significance of the decay reaction

The decay reaction transforms an unstable nucleus to a stable nucleus by emitting radiation.

The concept of the decay reaction gives the element that thorium turns into due to the emission of alpha particles.

03

Determination of the element that thorium turns into due to the emission of alpha particles

As charge is conserved in decay, then the products of the decay reaction is as follows,

Th90鈫�Xa+伪2

As the thorium element has +90eamount of charge and as the alpha particle has +2eamount of charge, then,

90=a+2a=88

As the resultant nuclei has an atomic number 88 which is radium, then the element isRa88.

Thus, the element that thorium turns into as a result of emitting an alpha particle is Ra88.

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

On a straight road with the +x axis chosen to point in the direction of motion, you drive for 3 h at a constant 30 mi/h, then in a few seconds you speed up to 60mi/h and drive at this speed for 1 h.

(a) What was the x component of average velocity for the 4 h period, using the fundamental definition. Of average velocity, which is the displacement divided by the time interval?

(b) Suppose that instead you use the equation vavg,x=(vix+vfx)2. What do you calculate for the x component of average velocity?

(c) Why does the equation used in part (b) give the wrong answer?

A comet passes near the Sun. When the comet is closest to the Sun, it is 9脳1010m from the Sun. You need to choose a time step to use in predicting the comet鈥檚 motion. Which of the following would be a reasonable distance for the comet to move in one time step, doing an iterative calculation by hand?(a)1脳102m(b)1脳1010m(c)1脳1011m(d)1脳109m

For each graph of vx vs. t numbered 1-6 in Figure, choose the letter (a-i) corresponding to the appropriate description of motion of a fan cart moving along a track. Not all descriptions will be used. Assume the usual coordinate system (+x to the right, +y up. +z out of the page).

(a) A cart moves to the left, gradually slowing down.

(b) A cart moves to the right, gradually speeding up.

(c) A cart moves to the left at a constant speed.

(d) A cart moves to the left, gradually slowing down, stops, and moves to the right, speeding up.

(e) A cart remains stationary and does not move.

(f) A cart moves to the right, gradually slowing down,

(g) A cart moves to the right. gradually slowing down, stops, and moves to the left, speeding up.

(h) A cart moves to the left, gradually speeding up.

(i) A cart moves to the right at a constant speed.

A person of mass 70 kgrides on a Ferris wheel whose radius is 4 m . The person's speed is constant at 0.3 m/s . The person's location is shown by a dot in Figure 5.78 .

(a) What is the magnitude of the rate of change of the momentum of the person at the instant shown?

(b) What is the direction of the rate of change of momentum of the person at the instant shown?

(c) What is the magnitude of the net force acting on the person at the instant shown? Draw the net force vector on the diagram at this instant, with the tail of the vector on the person.

Question: A truck driver slams on the brakes and the momentum of the truck changes fromtoindue to a constant force of the road on the wheels of the truck. As a vector, write the net force exerted on the truck by the surroundings.
See all solutions

Recommended explanations on Physics Textbooks

Work Energy and Power

Read Explanation

Quantum Physics

Read Explanation

Measurements

Read Explanation

Thermodynamics

Read Explanation

Particle Model of Matter

Read Explanation

Wave Optics

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.