Physics - MCAT

Question 1

What is the transfer of heat through the motion of fluids such as gases or liquids?

Answer 1

convection

Question 2

What is heat transfer through direct contact from a higher temp object to a lower temp object?

Answer 2

conduction

Question 3

What is the heat transferred by electromagnetic waves called?

Answer 3

radiation

Question 4

Energy transfers spontaneously in which direction: from cold to hot or from hot to cold?

Answer 4

from hot to cold

Question 5

Do electric field lines follow protons or neutrons?

Answer 5

protons

Question 6

What is the charge of one atomic particle (+ or -) in Coulombs?

Answer 6

1.602*10^19

Question 7

What is the relationship between resistance and conductance?

Answer 7

inverse

Question 8

What is the value for Coulomb’s constant k in F=k(q1q2)/r^2?

Answer 8

8.99x10^9 N (m^2/C^2)

Question 9

If the F in Coulomb’s law (F=k(q1q2)/r^2) is a positive value, is the interaction attraction or repulsion?

Answer 9

repulsion

Question 10

1 Amp = what?

Answer 10

1 Coulomb / 1 second

Question 11

1 Volt = what?

Answer 11

1 Joule / 1 Coulomb

Question 12

Equipotential lines represent what?

Answer 12

levels of electric potential

Question 13

In a magnetic dipole, what direction do the magnetic field lines extend?

Answer 13

north to south - look up magnetic dipole picture

Question 14

What type of compounds do not generate a magnetic field?

Answer 14

diamagnetic

Question 15

What type of compounds have a random distribution of spin and conduct magnetance?

Answer 15

paramagnetic

Question 16

What rule can you use to determine directionality of the magnetic field in a wire?

Answer 16

right hand rule - practice it! (current is right thumb and fingers are the magnetic field, back of hand is magnetic force if negative particle, palm is magnetic force if positive particle)

Question 17

If a circle in a dot is used to depict a magnetic field, what direction is it?

Answer 17

out of the page

Question 18

If a charge is moving in the same direction of a magnetic field, will it have magnetic force exterted on it?

Answer 18

No (F=qvBsin(theta) and theta=0 so F=0)

Question 19

Is the total resistance for several resistors in parallel more or less than each individual resistor?

Answer 19

less review resistor equation!

Question 20

What is the equation for capacitors *in parallel*?

Answer 20

CT=C1+C2+C3…

Question 21

What is the equation for resistors *in parallel*?

Answer 21

1/RT = 1/R1+1/R2+1/R3…

Question 22

What is the dielectric constant of a vacuum?

Answer 22

1 (the lowest)

Question 23

What corresponds to a high *pitch*?

Answer 23

high frequency

Question 24

What corresponds to a *loud* sound?

Answer 24

high amplitude

Question 25

What does a fundamental, 2nd, 3rd, and 4th harmonic look like?

Answer 25

Question 26

What types of molecules can apply a buoyant force?

Answer 26

fluids and gases

Question 27

When a liquid has strong adhesive forces to the container it is in, will its meniscus be more concave or convex?

Answer 27

concave

Question 28

What does the Venturi effect of flow state?

Answer 28

In a tube with varying cross-sectional areas, the area with the smallest area will have the greatest velocity and lowest pressure

Question 29

How is the distance of an image in the human eye calculated?

Answer 29

It’s the lens to retina distance

Question 30

What is the doppler effect?

Answer 30

When a perceived sound, image, or other wave is perceived as larger as it gets closer

Question 31

What is the Venturi effect?

Answer 31

The reduction in fluid pressure when air moves through a constricted area such as a pipe. Thus, Pair>Ptube and velocity air

Question 32

What are characteristics of working in a group vs working alone?

Answer 32

In a group - maximize cooperation, minimize conflict, produce FEWER alternatives than working alone

Question 33

In what type of environment does sound travel the fastest?

Answer 33

In a solid