FREE Trial

The rate at which the volume of a mothball evaporates from solid to gas is proportional to

Question:

The rate at which the volume of a mothball evaporates from solid to gas is proportional to the surface area of the ball. Suppose a mothball has been observed at one time to have a radius of 0.5 in. and, six months later, a radius of 0.25 in.
(a) Express the radius of the mothball as a function of time.
(b) When will the mothball disappear completely?
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Answer rating: 55% (9 reviews)

a We have dVdt kA where V is the volume t is time A is the surface area and k is a positiv...View the full answer


answer-question-section
Answered By
tutor-profile-image
Muhammad Mahtab
everyone looks that their work be perfect. I have more than a five year experience as a lecture in reputable institution, national and international. I provide perfect solution in marketing, case study, finance problems, blog writing, article writing, business plans, strategic management, human resource, operation management, power point presentation and lot of clients need. Here is right mentor who help clients in their multi-disciplinary needs.
5.00+ 3+ Reviews 14+ Question Solved
Related Book For  book-img-for-question
Differential Equations and Linear Algebra

Differential Equations and Linear Algebra

ISBN: 978-0131860612

2nd edition

Authors: Jerry Farlow, James E. Hall, Jean Marie McDill, Beverly H. West

See More Books
Question Posted:
See More Questions

Related Video

The area of a circle is given by the formula: A = ?r^2 Where A is the area, ? is a mathematical constant (approximately 3.14), and r is the radius of the circle. The radius is the distance from the center of the circle to the edge. So for example, if the radius of a circle is 5 units, the area would be: A = ?(5^2) = ?(25) = 78.5 square units Here three friends went out to a restaurant and decided to have pizza for lunch. While they were waiting for their order, one of them stepped out to take a call but promised to return in two minutes. The waiter came and presented them with the menu, and they decided to order two 10-inch pepperoni pizzas. The waiter took their order and left. Just then, the third friend returned and asked what they had ordered. They explained that they had ordered two small pepperoni pizzas as they were only three of them and it would be enough for them. However, the third friend suggested that for the same price, they could get a large pizza that would be much bigger than the two small ones. He asked the waiter for a pen and paper and proceeded to calculate the area of the two small pizzas and compared it to the area of one large pizza. The friends were amazed at how the circle measurements worked and decided to change their order from two small pizzas to one large pizza.

Students also viewed these Linear Algebra questions

Work With Computers Organizational Management Stress And Health Aspects 1st Edition - ISBN: 0444880798 - Free Book