Save
Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever
or

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

MCAT Physics Ch 2

QuestionAnswer
Energy (units = Joule, J) Property of a system that allows it to do something or make something happen, including the capacity to do work.
Kinetic Energy Energy associated with the movement of objects which depends on mass and speed squared (NOT VELOCITY)
Potential Energy Energy stored within a system which exists in gravitational, elastic, electric, and chemical forms
Gravitational Potential Energy Energy related to the mass of an object and its height above a zero point called a datum
Elastic Potential Energy Energy related to a spring constant (measure of the stiffness of a spring) and the degree of stretch or compression of a spring squared
Electrical Potential Energy Energy that exists between charged particles
Chemical Potential Energy Energy stored in the bonds of compounds
Mechanical Energy Sum of kinetic and potential energies
Conservative Forces Forces that are path independent and do not dissipate the mechanical energy of a system. Ex's: Gravitational and Electrostatic forces, Elastic forces.
Nonconservative Forces Forces that are path dependent and cause dissipation of mechanical energy from a system. Ex's: Friction, air resistance, and viscous drag.
Work Process by which energy is transferred from one system to another. This can be expressed as the dot product of force and displacement, or the product of force and distance traveled with the cos of the angle between them. Also found as area of P-V curve.
Power Rate at which work is done or energy is transferred. SI unit of power is watt (W)
Work-energy Theorem When net work is done on or by a system, the system's kinetic energy will change by the same amount.
Mechanical Advantage Factor by which a simple machine multiplies the input force to accomplish work. Reduces input force to accomplish work, but increases distance through which input must be applied.
Six Simple Machines Inclined plane, wedge, wheel and axle, lever, pulley, and screw.
Load Output force of a simple machine that acts over a given load distance to determine work output of the simple machine.
Effort Input force of a simple machine which acts over a given effort distance to determine the work input of the simple machine.
Efficiency Ratio of the machine's work output to work input when non conservative forces are taken into account.
Kinetic Energy K = 1/2 mv^2
Gravitational Potential Energy U = mgh
Elastic Potential Energy U = 1/2 kx^2
Total Mechanical Energy E = U + K
Conservation of Mechanical Energy Del. E = Del. U + Del. K = 0
Work done by non conservative forces W nonconservative = Del. E = Del. U + Del. K
Work Formula (mechanical) W = F * d = Fd cos(angle)
Work Formula (Isobaric gas-piston system) W = P*Del.V
Power Formula P = W / t = Del. E / t
Work-Energy Theorem W net = Del. K = Kf - Ki
Mechanical Advantage Mechanical advantage = Fout / Fin
Efficiency Efficiency = W out / W in = Load(load distance) / (effort)(effort distance)
Created by: SamB91
Popular MCAT sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards