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DSST Physical Sciences2

Subjects : dsst, science

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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1. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
They do not differ
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
Half of the exponent
Helium; 4

2. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
The lowest whole number ratio of moles of each element in a mole of a cmpd
Force times the distance over which the force acts
Helium; 4

3. The coefficient of kinetic friction is always lower than what? Therefore what?
H = negative and S = positive
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
How strong a base is
That of static friction; there is a net accelerating force on the block once it starts to slide

4. What are the units of an electric field?
The buoyant force on it; W = mg = pVg
V/m or N/C
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure

5. How do you find specific gravity of an object?
E = (kq)/r^2
Mass per unit volume compared to water: so if mass is 15 g and displaces 5g of benzene the ratio of object to liquid mass is 15/5 = 3 and then times 3 by the specific gravity of benzene which is 0.7
Positive
Momentum

6. What is the magnitude of the electric field produced by a point charge?
E = (kq)/r^2
Positron because this is known as positron decay/electron capture
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Red

7. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
T = 2pi/angular velocity; v/r
A positron or electron; when atomic number goes up you know an electron has been emitted
NO; reduction-oxidation
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio

8. If you have a decrease of pressure to which side of the equation is it equilibrium shifted towards? What about if you increase temperature?

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9. Neither N2 or O2 have a permanent what? What does this mean?
They do not differ
NO; reduction-oxidation
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
At an equal distance behind it as the object is in front of the mirror

10. What is the principal quantum number (n)?
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
Positron because this is known as positron decay/electron capture
Electron shell number
Mg

11. How many mL is in one liter?
1000
Its intensity in the spectrum
Strong acid and strong base/ weak acid and weak base
Its momentum is zero because velocity is zero; zero because of conservation of momentum

12. How do you find wavelength if you known distance from adjacent crests and troughs?
Momentum
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
-l to +l
Its twice that distance

13. What is one faraday equal to?
Voltage
One mole of electric charge
Total internal reflection
Mv = mv

14. Thus is Zn (which has positive oxidation potential) reacts with HCl - will any rxn take place?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Ability to locate an event in space
They must balance
(density[p])(volume)

15. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
Cathode; anode
P = IV
A current; a magnetic field into a curved path; the charge and mass of the incoming particle and can be effectively used to distinguish different species of particles from one another
The lowest whole number ratio of moles of each element in a mole of a cmpd

16. What kind of charge is on Al?
Negative
A salt and water
3+
Energy

17. The free energy change (G) must be negative when what?
How strong a base is
Isolating an atom from minerals by decomposing the minerals with an electric current
H = negative and S = positive
Constant to overcome the heat of fusion (solid to liquid state)

18. What is weight equal to?
400 to 700 nm
Look at how many times smaller the H concentration becomes with relation to rate law: if rate law says [H] is second order: ((10^-2)^2/(10^-1)^2 = 10^-2 and then times that answer by the original rate
Mg
They must balance

19. F in the Young's modulus equation can also equal what? What is E?

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20. What is the unit for Young's Modulus?
(density[p])(volume)
Helium; 4
When you have central atom with six ions on it
Pascal (N*m^2)

21. At the moment of explosion of an object - what is its momementum? Why? After an explosion what is the total momentum carried by all the fragments?
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Its momentum is zero because velocity is zero; zero because of conservation of momentum
Force times the distance over which the force acts
H = negative and S = positive

22. What direction do gravity and bouyancy work? What direction does water pressure work?
Vertically; perpendicular to all surfaces
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Pascal (N*m^2)
The nucleus gains a proton and no neutrons

23. Can a catalyst shift equilibrium?
No - it increases the speed at which the rxn reaches that equilibrium
Where an event took place
Total internal reflection
The current is the same

24. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
[S][2S]^2 = 4S^3
F = GMm/r^2
When you have central atom with six ions on it
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure

25. Heat from friction comes from what?
Decreasing potential energy
They must balance
That of static friction; there is a net accelerating force on the block once it starts to slide
(+)

26. What is Avagadro's number regarding ions/mol?
6.02 x 10^23 ions/mol
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Ability to locate an event in space
Isolating an atom from minerals by decomposing the minerals with an electric current

27. How do you find 'g' from Newton's law of gravity?
The lowest one
Half of the exponent
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
They are directly proportional

28. The electrical force on a particle depends on what?

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29. What is usually conserved over oscillation periods?
The particle's charge and the magnitude of the electric field
It minimizes the reabsorption of the light because the light must exit the scintillator to reach the photomultiplier where it is converted to an electrical pulse
Energy
The density of the water and volume of the lead object

30. What is the spin projection quantum number?
The regular one
The volume of the ice cube or whatever it is
Density (gravitational constant) height
+/- 1/2

31. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
The mass of an acid that yields one mole of H ions or the mass of a base that reacts with one mole of H ions
It can absorb light that lets other electrons fill those orbitals
F =ma and F= qE
Neutrons; atomic number

32. The number of incident photons on the cathode affect what?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
The number of electrons emitted
Half of the exponent
Helium; 4

33. In order to guarantee a non-zero spin how many electrons are needed?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
The force along the board to the normal force
An odd number
Pascal (N*m^2)

34. If you are given density and volume how do you find mass?
Negative
(density[p])(volume)
T = (2h/g)^1/2; distance = vt
The cross-sectional area through which the fluid flows

35. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
When all the external forces = zero
At an equal distance behind it as the object is in front of the mirror
Only temperature of the water bath

36. When a falling mass is at terminal speed - what is the power expended by the air resistance?
Attractive molecular forces acting between material surfaces in contact
A function of the total number of molecules; if there is one mol of CO2 for every 2 mol of H20 then H20 is 2/3 the total pressure
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
P = F(v) = mg(v -terminal)

37. If the equation says that the E^o has (-) voltage when being reduced - but it is being oxidized in the problem - what does the voltage then become?
The current is the same
Constant to overcome the heat of fusion (solid to liquid state)
(+)
The number of electrons emitted

38. What is the amt of energy that a frictional force generates?
L = wavelength/2 so L= (wavelength)(2)
A current; a magnetic field into a curved path; the charge and mass of the incoming particle and can be effectively used to distinguish different species of particles from one another
It's weight = mg; h
Force times the distance over which the force acts

39. An oxidation-reduction rxn that occurs spontaneously has what kind of E^o for the cell?
Positive
Quantum number that dictates the shape of an orbital; how many angular nodes are present? Spherical shape with no angular nodes thus you have 0 for angular momentum quantum number
F =ma and F= qE
Density (gravitational constant) height

40. So if you are given an equation and it gives you the E^o for both side equations seen in the big equation - what do you do with them?
The number of electrons emitted
E = (kq)/r^2
Add them together
1000

41. The coefficient of static friction is the ratio of what?
The force along the board to the normal force
Density (gravitational constant) height
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Add them together

42. The probability of an X-ray emission event at a given wavelength is measured by what?
P = F(v) = mg(v -terminal)
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
They increase because you hear a lower frequency
Its intensity in the spectrum

43. Half-sine wave shape is what kind of wavelength with regards to length?
Add them together
Alkali metals = first column
Sp^3
L = wavelength/2 so L= (wavelength)(2)

44. What kind of geometry is octahedral?
When you have central atom with six ions on it
Its twice that distance
Look at how many times smaller the H concentration becomes with relation to rate law: if rate law says [H] is second order: ((10^-2)^2/(10^-1)^2 = 10^-2 and then times that answer by the original rate
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio

45. A plane mirror produces an image where?
Alkali metals = first column
At an equal distance behind it as the object is in front of the mirror
The mass of an acid that yields one mole of H ions or the mass of a base that reacts with one mole of H ions
The regular one

46. What is conserved in an inellastic collision?
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
When electron falls from high energy to low energy level
The lowest one
Momentum

47. What happens to the atomic number and atomic mass of an element that go under Beta decay or positron emission?
How strong a base is
Momentum
The element's mass number
Mass number stays the same but the atomic number increases

48. What if the circuit elements are in series?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
F =ma and F= qE
Electron shell number
The current is the same

49. Why does light travel slower in an optically dense medium than through a vacuum?
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
T = 2pi/angular velocity; v/r
Pascal (N*m^2)

50. The square root of 10^anything is equal to what?
Half of the exponent
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
An odd number
That of static friction; there is a net accelerating force on the block once it starts to slide

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DSST Physical Sciences2

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