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Test your basic knowledge |
MCAT Physics
Start Test
Study First
Subjects
:
mcat
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. If the force and the distance applied is in the same direction...
effort decreases
terminal velocity
Translational motion
work is positive
2. The value of speed/velocity - distance/displacement are interchangeable in this case - just keep a mental note of the direction. Ave acceleration = change in velocity / time
2nd Law of Thermodynamics
Pressure under Water
For displacements and distances that approach zero - the instantaneous velocity equals
When acceleration is constant and there is no change in direction
3. Satellites orbiting the Earth are in free fall. Their centripetal acceleration equals the acceleration from the Earth's gravity.
same gravitational work
Orbiting in space
Center of mass
Sinusoidal motion
4. 'rotational equivalent of force'; a force applied so as to cause an angular acceleration. t = FxLxsin ?
weakest
Banked Circular Tracks
Torque
Hooke's Law
5. X = Axcos(?xt) = Axcos(2xpxf xt) ? = angular frequency f = frequency
Quadratic Formula
Capacitors in parallel
Momentum
Sinusoidal motion
6. R = ?xL / Ax ? = resistivity of wire material L = length of the wire Ax = cross - sectional area of the wire
Buoyant Force - Buoyancy
Resistance of a Wire
Total momentum of 2 objects before a collision
Energy Released by Nuclear Fission or Fusion Reaction
7. Mass/volume p= m/V
Momentum - Impulse
Density
Static friction
simple harmonic motion
8. M = mo / Beta
Torques - lever arms
Relativistic Mass Increase
Universal Gravitation
Poiseuille's Law
9. F = qxvxBxsin ?
Centripetal Force (F=- mv2/r)
negative work
Force caused by a magnetic field on a moving charge
de Broglie Matter Waves
10. Centripetal force is due to centripetal acceleration. Centripetal acceleration is due to changes in velocity when going around a circle. The change in velocity is due to a constant change in direction. ?Sometimes a negative sign is used for centripet
Weight
Momentum
Centripetal Force (F=- mv2/r)
Buoyant Force - Buoyancy
11. On Earth - the rate of acceleration is g - which is ______.
Density
9.8 m/s2
horizontal component
a direction
12. b
Uniform circular motion
vector fashion
= kinetic friction
Quadratic Formula
13. B=
Magnetic Field around a wire
4 universal forces
Electric Power
Kirchoff's Laws
14. When things are at rotational equilibrium - there the sum of all torques = 0.
Resistance of a Wire
constant
Rotational equilibrium (Sum of Torque = 0)
Newton's third law - forces equal and opposite
15. ET = Ek + Ep and E = mc2
Linear Expansion
same gravitational work
Energy (conservation)
larger
16. Linear speed = v = rx? = r x angular speed
Angular Speed vs. Linear Speed
material properties
de Broglie Matter Waves
Bernoulli's Equation
17. Operation involving a __________ may or may not result in a vector (kinetic energy from the square of vector velocity results in scalar energy).
Destructive interference
To calculate how far did the projectile travel
Instantaneous velocity
vector and a vector
18. Q = mxcx?T (no phase changes!) Q = the heat added c = specific heat. ?T = temperature change - K
velocity
Projectiles
Heating a Solid - Liquid or Gas
9.8 m/s2
19. A = Aoxe - k t = (1/2n)xA0 (after n half - lives) Where k = (ln 2) / half - life
Momentum
Radioactive Decay Rate Law
Induced Voltage
Projectile Motion
20. ? + ?gh + 1/2 ?v2 = constant
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21. If the object is sliding - then you are dealing with ___________ and it will be constant and equal to
Work - Power
Concept of a field
Blackbody Radiation and the Photoelectric Effect
kinetic friction
22. When things are at translational equilibrium - the vector sum of all forces = 0. Things at ______________ either don't move - or is moving at a constant velocity. If an object is accelerating - it's not in equilibrium.
Kirchhoff's rules
Translational equilibrium (Sum of Fi = 0)
Conservation of linear momentum
horizontal component
23. Total momentum before = total momentum after.
Friction Force
velocity
Magnetic Flux
Conservation of linear momentum
24. ?U = QNet + WNet
Hooke's Law
Friction
Entropy change at constant T
First Law of Thermodynamics
25. In an object that accelerates down the inclined plane: parallel component of gravity...
Inelastic collisions
Bernoulli's Equation
> kinetic friction
Rotational Kinetic Energy
26. The ______ arm consists of a rigid rod and a fulcrum (where the center of rotation occurs). The torque is the same at all positions of the lever arm (both on the same side and on the other side of the fulcrum). ?If you apply a force at a long distanc
Lever
Continuity of Fluid Flow
Magnetic Field around a wire
Vector addition
27. T = FxLxsin ? Where ? is the angle between F and L; unit: Nm
Torque
Resistor's in parallel
negative work
Law of gravitation (F = Gm1m2/r^2)
28. The acceleration produced by a net force on a body is directly proportional to the magntude of the net force - is in the same direction as the net force - and is inversely proportional to the mass of the body. Fnet = SFExt = mxa
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29. The point of maximum displacement in a standing wave.
times the cosine
in magnitude
Weight
Anti node
30. P =
Bernouilli's Equation
Potential Energy stored in a Capacitor
one direction as positive and another as negative
Magnetic Flux
31. ?x = Betax?xo
Average acceleration
Friction Force
Lever
Relativistic Length Contraction
32. For things being tossed upwards - take all upward motion such as initial velocity as __________. Leave all
Stress and Strain
Pressure under Water
negative
parallel
33. When the centripetal force is taken away (Such as when the string snaps) - the object will...
fly off in a path tangent to the circle at the point of snap
negative work
Energy Released by Nuclear Fission or Fusion Reaction
Potential Energy stored in a Capacitor
34. Ainxvin = Aoutxvout A= Area v = velocity
Real weightlessness
Impulse = Change in Momentum
Current and Resistance
Continuity of Fluid Flow
35. Addition of two waves when the crest of one overlaps the crest of another - so that their individual effects add together. The result is a wave of increased amplitude.
Resistance of a Wire
4 universal forces
Capacitance of a Capacitor
Constructive interference
36. The change in internal energy of a system is ?U = QAdded + WDone On - Qlost - WDone By
Entropy change at constant T
Resistor's in series
Energy of a Photon or a Particle
2nd Law of Thermodynamics
37. Vibration about an equilibrium position in which a restoring force is proportional to the displacement from equilibrium. T=2p(sqrt(m)/(k)) where k = spring constant = 1 / T = 1 / period
Ideal Gas Law
The momentum of a bomb at rest
Simple Harmonic Motion
effort decreases
38. Operation involving a ___________ always results in a vector.
Torque
> kinetic friction
equal and opposite
vector and a scalar
39. W = F d cos? and P = ?W/?t
Center of mass
Elastic collisions
weakest
Work - Power
40. The velocity at an instant (infinitesimal time interval).
Snell's Law
Angular Speed vs. Linear Speed
Instantaneous velocity
Newton's first law - inertia
41. I. Linear: strain = ?L / L II. Shear: strain = ?x / L III. Volume: strain = ?V / V
Average acceleration
Friction Force
Three kinds of strain: unit - less ratios
velocity
42. Unless the object levitates or crashes through the inclined plane - the normal force always equals...
the normal component of gravity
no work is done
simple harmonic motion
Magnetic Field around a wire
43. P =
> kinetic friction
Conservation of kinetic energy
Potential Energy stored in a Capacitor
Newton's Second Law and Rotational Inertia
44. There is no acceleration in the ________. The horizontal component of velocity is constant.
Newton's Second Law
Newton's third law - forces equal and opposite
horizontal component
Translational equilibrium (Sum of Fi = 0)
45. xYou can only directly add vectors if they are in the same direction - To add vectors in different directions - you must add their x - y and z components. The resulting components make up the added vector.
velocity and displacement
Translational equilibrium (Sum of Fi = 0)
Total momentum of 2 objects before a collision
Vector addition
46. The increase in volume of a substance due to an increase in temperature. Linear: ?L = Loxax?T Volume: ?V = VoxBetax?T
Current and Resistance
Blackbody Radiation and the Photoelectric Effect
Thermal Expansion
simple harmonic motion
47. The distance of stretch or squeeze of an elastic material is directly proportional to the applied force F = kxx Potential Energy of a spring W =
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48. C = ?xeoxA / d ? = dielectric constant A = area of plates d = distance between plates eo = 8.85 E(-12) F/m
Capacitance of a Capacitor
scalar and a scalar
Force caused by a magnetic field on a moving charge
Density
49. ?t = ?to / Beta
scalar
Relativistic Time Dilation
Doppler Effect: when d is decreasing use + vo and - vs
larger
50. Change in the apparent frequency of a wave as observer and source move toward or away from each other. Toward Away.
Doppler effect
Angular Speed vs. Linear Speed
Weak force
Refraction