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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. Total momentum of 2 objects after a collision
Stress and Strain
Momentum - Impulse
Total momentum of 2 objects before a collision
Freely falling bodies
2. P = ?xgxh h = depth of water ? = density of water
When acceleration is constant and there is no change in direction
Pressure under Water
Weight
Real weightlessness
3. A = Aoxe - k t = (1/2n)xA0 (after n half - lives) Where k = (ln 2) / half - life
Newton's first law - inertia
Hooke's Law
Radioactive Decay Rate Law
Resistor's in parallel
4. When a source emitting a sound and a detector receiving the sound move relative to each other - the virtual frequency vf' detected is less than (distance increases) or greater (distance decreases) than the actual emitted frequency. f' = f(V
Thermodynamics
Doppler Effect
Newton's first law - inertia
Torque force at Equilibrium
5. SFx = 0 and SFy = 0
Centripetal Force (F=- mv2/r)
Torque force at Equilibrium
vertical acceleration
Ohm's Law
6. Conservation of both momentum and kinetic energy - e.g. if you drop a ball and the ball bounces back to its original height
Concept of a field
kinetic friction
Law of gravitation (F = Gm1m2/r^2)
Elastic collisions
7. Are free falling bodies.
Projectiles
Lever
Potential Energy stored in a Capacitor
Kirchoff's Laws
8. KErotational =
Ideal Gas Law
Deceleration
beta (Beta) particle
Rotational Kinetic Energy
9. Uniformly accelerated motion along a straight line
Continuity (fluids)
Doppler Effect
Average acceleration
Newton's Second Law
10. In an object that begins to slip on the inclined plane: parallel component of gravity...
> static friction
Translational motion
Motion on an inclined plane
Moon
11. F = kxx Potential Energy of a spring W =
12. Horizontal: x-x?= v?xt + 0 Vertical: y-y? = v?xt +
There are two kind of weightlessness
Projectile Motion
Simple Pendulum
Newton's first law - inertia
13. (physics) a rate of change of velocity
acceleration
vector and a scalar
Newton's second law (F = ma)
tangent
14. The __________ at a horizontal surface is equal to the weight
one direction as positive and another as negative
normal force
Friction
2nd Law of Thermodynamics
15. Instantaneous speed equals instantaneous velocity ____________.
one direction as positive and another as negative
fly off in a path tangent to the circle at the point of snap
Buoyant Force - Buoyancy
in magnitude
16. Beta=sqrt 1- v^2/c^2
Lorentz Transformation Factor
Friction Force
Capacitors in parallel
Energy of a Photon or a Particle
17. P =
Density
Work done on a gas or by a gas
Potential Energy stored in a Capacitor
Energy of a Photon or a Particle
18. Satellites orbiting the Earth are in free fall. Their centripetal acceleration equals the acceleration from the Earth's gravity.
Apparent weightlessness
Orbiting in space
de Broglie Matter Waves
Periodic Waves
19. The __________ of the projectile velocity is always accelerating toward the Earth at a rate of g.
vertical component
beta (Beta) particle
Average acceleration
larger
20. F=mv^2/R=m?r
displacement
2nd Law of Thermodynamics
Centripetal Force
Change in Internal Energy of a system
21. It makes things accelerate - change velocity or change direction. In the MCAT - it is indicated by an arrow. The direction of the arrow is the direction of the force. The magnitude of the force is often labeled beside the arrow. F=ma - so the unit f
velocity
Anti node
Concept of force - units
Constructive interference
22. Y or S or B = stress / strain stress = F/A
Lever
Stress and Strain
Change in Internal Energy of a system
Torque force at Equilibrium
23. When something is in __________ - the vector sum of all forces acting on it = 0. When something is in ____________ - it is either at rest or moving at constant velocity. When something is in ___________ - there is no overall acceleration.
Relativistic Length Contraction
Equilibrium
tangent
Anti node
24. If the force and the distance applied is in the same direction...
Bernoulli's Equation
displacement
work is positive
Ohm's Law
25. Change in the apparent frequency of a wave as observer and source move toward or away from each other. Toward Away.
Doppler effect
2nd Law of Thermodynamics
Torque forces
The displacement for a quarter around the circle (pi/4 radians or 45 degrees) - the displacement
26. When the centripetal force is taken away (Such as when the string snaps) - the object will...
Momentum - Impulse
Resistance of a Wire
tangent
fly off in a path tangent to the circle at the point of snap
27. Roughly 50 orders of magnitude weaker than the strong force. Responsible for weight (not mass!). Also - responsible for planet orbits.
Analysis of pulley systems
Gravity
fly off in a path tangent to the circle at the point of snap
Snell's Law
28. Total kinetic energy before = total kinetic energy after.
To calculate how far did the projectile travel
horizontal component
Thin Lens Equation
Conservation of kinetic energy
29. 1/C? = 1/C1 + 1/C2 + 1/C3 + etc. **Voltages sum when capacitors are in series (V? = V1 + V2 + V3 ...)**
Lenz's Law
acceleration
Capacitors in series
Kinetic friction
30. If the force is acting in one direction - but the object moves in a perpendicular direction - then...
Energy (conservation)
Spring Force - Work
no work is done
Newton's Second Law and Rotational Inertia
31. Sum of all torques acting on an object is zero. No net angular acceleration.
Blackbody Radiation and the Photoelectric Effect
rotational equilibrium
Newton's first law - inertia
Law of gravitation (F = Gm1m2/r^2)
32. PxV = nxRxT n = # of moles of gas R = gas law constant = 8.31 J / K mole. - law that states the math relationship of pressure (P) - volume (V) - temperature (T) - the gas constant (R) - and the number of moles of a gas (n); PV=nRT.
Kinetic friction
Ideal Gas Law
Conservation of linear momentum
The momentum of a bomb at rest
33. For a given mass - its weight on Earth is different from its weight on the _____.
horizontal component
Moon
Momentum
Thermodynamics
34. 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.
Simple Pendulum
Translational equilibrium (Sum of Fi = 0)
Poiseuille's Law
material properties
35. PEGrav = P = mxgxh KELinear = K =
same gravitational work
Mechanical Energy
Newton's Second Law
Newton's third law - forces equal and opposite
36. Si = 0 at a junction and S?V = 0 in a loop
37. Sliding down a frictionless inclined plane involves the __________ as doing a free fall at the same height.
Spring Force - Work
same gravitational work
Quadratic Formula
Impulse = Change in Momentum
38. R = ?xL / Ax ? = resistivity of wire material L = length of the wire Ax = cross - sectional area of the wire
vertical component
rotational equilibrium
Resistance of a Wire
vertical acceleration
39. Roughly 10 orders of magnitude weaker than the strong force. Responsible for radioactive decay.
larger
Kinetic friction
Weak force
Torque
40. A net force acting on an object will cause that object to accelerate in the direction of the net force. The unit for force is the Newton. Both force and acceleration are vectors because they have a direction.
41. DF = dq v(B sin a) = I dl(B sin a)
42. Logarithmic unit of measurement that expresses the magnitude of a physical quantity (usually power or intensity) relative to a specified or implied reference level. B (Decibel level of sound) = 10 log ( I / Io ) I = intensity of sound Io = intensity
Weak force
Decibel Scale
Sinusoidal motion
> kinetic friction
43. P = I
Rotational equilibrium (Sum of Torque = 0)
velocity
horizontal component
Electric Power
44. The direction of instantaneous velocity is _______ to the path at that point Ave speed = distance / time = v = d/t
To calculate the time the projectile is in the air
Bernoulli's Equation
Kinetic friction
tangent
45. The speed at an instant (infinitesimal time interval).
Pressure under Water
Friction - static and kinetic
Density
Instantaneous speed
46. Loop Rule: SAround any loop ?Vi = 0 Node Rule: Sat any node Ii = 0
47. The ____________ of g toward the Earth holds true at all times - even when the projectile is traveling up (it's decelerating on its way up - which is the same thing as accelerating down).
vertical acceleration
Potential Energy stored in a Capacitor
Gravity
Projectile Motion
48. Friction always does ___________ because frictional forces always act against the direction of motion.
Pressure under Water
Angular Speed vs. Linear Speed
negative work
Newton's first law - inertia
49. Moving around a circle at constant speed - frequency = How many times the object goes around the circle in one second. Period = time it takes to move around the entire circle.
effort decreases
simple harmonic motion
Kirchhoff's rules
Conservation of linear momentum
50. Applies to objects in motion. A key sliding across the table eventually comes to a stop because of kinetic friction.
Kinetic friction
= kinetic friction
Centripetal Force
To calculate how far did the projectile travel