We are open Saturday and Sunday!

Call Now to Set Up Tutoring:

(888) 888-0446

College Physics : Density, Specific Gravity, and Viscosity

Study concepts, example questions & explanations for College Physics

Create An Account

All College Physics Resources

66 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #1 : Fluids

The reason why a coconut floats in water is because __________.

Possible Answers:

the density of the coconut is equal to the density of the water it displaces

the density of the coconut is less than the density of the water it displaces

the surface area of the coconut contacting the water is the same as the surface area of the water contacting the coconut

the gravitational force acting on the coconut is less than the buoyant force

Correct answer:

the gravitational force acting on the coconut is less than the buoyant force

Explanation:

The equation for the buoyant force is $F = \rho g V$ . The gravitational force is constant. In order for the coconut to float, the buoyant force must be greater than the gravitational force. If the gravitational force is greater than the buoyant force, then the object will sink.

Report an Error

Example Question #2 : Fluids

A baseball has a mass of 500g , but it weighs 4.7 N when completely submerged in water. What is its volume assuming that the density of water is $1000 \frac{kg}{m^3}$ ?

Possible Answers:

10.9 cm^3

3.77 cm^3

20.9 cm^3

$2.09\times 10^{5} cm^{3}$

Correct answer:

20.9 cm^3

Explanation:

We are given the mass of the baseball outside of the water. Using the weight equation w = mg with the gravitational constant being $9.8\frac{m}{s^2}$ and the mass being 0.5 kg , the weight of the baseball outside of the water is 4.905 N. (Be careful and convert the mass of the baseball from grams to kilograms since we are using SI units).

The buoyancy force is the difference of the weight of the baseball when it is in the air and when it is in the water. So subtract the two differences:

W_2 - W_1 = 4.905N -4.7N = 0.205 N

Now we use the buoyancy equation:

$B = \rho Vg$ where is the buoyancy force, $\rho$ is the density of water, is the volume of the baseball, and is the gravitational constant. Plug in the known variables and solve for the volume.

$0.205N = (1000\frac{kg}{m^3}) V (9.81\frac{m}{s^2})$

and we get $V = 2.09\times 10^{-5}m^3 = 20.9 cm^3$

Report an Error

View Tutors

Carlos
Certified Tutor

Pikes Peak Community College, Associate in Science, Cyber/Electronic Operations and Warfare.

View Tutors

Madison
Certified Tutor

Murray State University, Bachelor, elementary eeducation.

View Tutors

Kim
Certified Tutor

Eastern University Esperanza College, Bachelor in Arts, Child Development.

All College Physics Resources

66 Practice Tests Question of the Day Flashcards Learn by Concept

Popular Subjects

GRE Tutors in Los Angeles, Statistics Tutors in San Diego, Spanish Tutors in Los Angeles, SAT Tutors in San Francisco-Bay Area, French Tutors in New York City, SAT Tutors in Los Angeles, Math Tutors in Denver, LSAT Tutors in Atlanta, GRE Tutors in New York City, SAT Tutors in Denver

Popular Courses & Classes

GRE Courses & Classes in San Francisco-Bay Area, SAT Courses & Classes in San Francisco-Bay Area, SAT Courses & Classes in New York City, SSAT Courses & Classes in Chicago, ISEE Courses & Classes in San Francisco-Bay Area, Spanish Courses & Classes in Atlanta, ISEE Courses & Classes in Houston, Spanish Courses & Classes in Chicago, SAT Courses & Classes in Boston, GMAT Courses & Classes in Seattle

Popular Test Prep

ISEE Test Prep in Houston, SSAT Test Prep in Phoenix, GRE Test Prep in Dallas Fort Worth, ISEE Test Prep in San Francisco-Bay Area, ISEE Test Prep in Philadelphia, ISEE Test Prep in Washington DC, LSAT Test Prep in Philadelphia, GRE Test Prep in Houston, MCAT Test Prep in New York City, SAT Test Prep in Chicago

DMCA Complaint

If you believe that content available by means of the Website (as defined in our Terms of Service) infringes one or more of your copyrights, please notify us by providing a written notice (“Infringement Notice”) containing the information described below to the designated agent listed below. If Varsity Tutors takes action in response to an Infringement Notice, it will make a good faith attempt to contact the party that made such content available by means of the most recent email address, if any, provided by such party to Varsity Tutors.

Your Infringement Notice may be forwarded to the party that made the content available or to third parties such as ChillingEffects.org.

Please be advised that you will be liable for damages (including costs and attorneys’ fees) if you materially misrepresent that a product or activity is infringing your copyrights. Thus, if you are not sure content located on or linked-to by the Website infringes your copyright, you should consider first contacting an attorney.

Please follow these steps to file a notice:

You must include the following:

A physical or electronic signature of the copyright owner or a person authorized to act on their behalf; An identification of the copyright claimed to have been infringed; A description of the nature and exact location of the content that you claim to infringe your copyright, in \ sufficient detail to permit Varsity Tutors to find and positively identify that content; for example we require a link to the specific question (not just the name of the question) that contains the content and a description of which specific portion of the question – an image, a link, the text, etc – your complaint refers to; Your name, address, telephone number and email address; and A statement by you: (a) that you believe in good faith that the use of the content that you claim to infringe your copyright is not authorized by law, or by the copyright owner or such owner’s agent; (b) that all of the information contained in your Infringement Notice is accurate, and (c) under penalty of perjury, that you are either the copyright owner or a person authorized to act on their behalf.

Send your complaint to our designated agent at:

Charles Cohn Varsity Tutors LLC
101 S. Hanley Rd, Suite 300
St. Louis, MO 63105

Or fill out the form below:

Do not fill in this field

Contact Information

* Full legal name

Company name

* Phone number

* Email address

Address

* Address1

Address2

* City

* State

* Zipcode

* Country

Complaint Details

* URL of copyrighted work (where your original material is located)

* Please describe the copyrighted work so that it may be easily identified

I am the owner, or an agent authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.

I have a good faith belief that the use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.

This notification is accurate.

I acknowledge that there may be adverse legal consequences for making false or bad faith allegations of copyright infringement by using this process.

* Signature (your digital signature is legally binding)

HIGH SCHOOL

GRADUATE SCHOOL

K-8

Search 50+ Tests

math tutoring

science tutoring

foreign languages

elementary tutoring

other

Search 350+ Subjects

College Physics : Density, Specific Gravity, and Viscosity

Study concepts, example questions & explanations for College Physics

All College Physics Resources

Example Questions

Example Question #1 : Fluids

Example Question #2 : Fluids

All College Physics Resources

Report an issue with this question

DMCA Complaint

Contact Information

Address

Complaint Details

Email address:
Your name:
Feedback: