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MCAT - AAMC - Physics Q-Pack
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Gravity
Terms in this set (21)
Electric field = ∆voltage ÷ distance
How do you find the magnitude of uniform electric field?
1V
1volt
What is equivalent to 1 J/C
λ = (2÷n)L
First harmonic: λ=2L
Second harmonic: λ=L
Third harmonic: λ=(2/3)L
What is the equation for harmonic wavelength?
seconds
What's the units for period?
Hz
[sˆ(-1)]
What's the units for frequency?
Number of electron ejection, not speed or energies.
When you change photon energy, what changes?
electric charge and field
What is the electric force dependent on?
C = Q/V
C = ЄA/d
What are the equations for capacitance?
Eq = F = ma
a = Eq/m
How would you relate acceleration, force, mass, electric field and particle charge?
series --> 1/c1 +1/c2 ... 1/cn
parallel --> c1 + c2 ... cn
How to calculate capacitance in series? in parallel?
C. it accelerates toward the positive plate
It moves with a constant FORCE, therefore it's accelerating.
Which of the following best describes the motion of a negatively charged particle after it has been injected between the plates of a charged, parallel-plate capacitor?
A. it moves with constant speed toward a positive plate
B. it moves with a constant speed toward a negative plate
C. it accelerates toward the positive plate
D. it accelerates toward the negative plate
PE = 0.5kxˆ2
What's the potential energy of an oscillation motion?
C. 6.0m
1) 4L = 8n
2) 4L = 4.8(n+2)
3) 8n = 4.8(n+2) ==> n = 3
4) 4L = 8(3) ==> L = 6
Consecutive resonances occur at wavelengths of 8m and 4.8m in an organ pipe closed at one end. What is the length of the organ pipe? NOTE: Resonances occur at L = n λ/4, where L is the pipe length, λ is the wavelength and n = 1, 3, 5...)
A. 3.2m
B. 4.8m
C. 6.0m
D. 8.0m
I = P/A
P = power (watts)
A = area (metersˆ2)
How do you solve for intensity?
dB = 10log(I÷Io)
Io = threshold for hearing = 10ˆ-12
What's the equation for intensity level?
P = pgh
(p = density)
How do you relate pressure, gravity, height, and density?
B = (p)(Vs)(g)
p -- density of liquid
Vs -- volume submerged
g -- gravity
What is the equation for buoyancy force?
P = F/A
units is pascals
What is F/A?
t = FLsinΘ
What is the equation for torque?
1km
mg x 20cm = .2kg x 50 cm x g + 0.5 kg x 20 cm x g
THE STICK IS 20CM AWAY FROM THE CENTER OF MASS OF (50CM).
A 0.5 kg uniform meter stick is suspended by a single string at the 30 cm mark. A 0.2 kg mass hangs at the 80 cm mark. What mass at the 10 cm mark will provide equilibrium?
R = resistivity x (length ÷ area)
What is the equation for resistance? NOT: R = V/I
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