AnswersKISD SS-3391B-Algebra II Honors B Exam OnlyCumulative Exam

Cumulative Exam — Cumulative exam Answers

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Aluminum has a frequency threshold of 9.846 × 1014 Hz. Which best explains what will happen when light with a frequency below the frequency threshold strikes aluminum?

A
Electrons will be ejected immediately.
B
No electrons will be ejected.
C
Electrons will start being ejected several seconds after the light strikes the aluminum.
D
No electrons will be ejected unless the intensity is very high.
2
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A wave has a wavelength of 3.3 m and a speed of 5.6 m/s. What is the frequency of this wave?

A
0.59 Hz
B
1.7 Hz
C
3.4 Hz
D
18 Hz
3

A bell is rung. What best describes the density of air around the bell?

A
The air density does not change.
B
The air density increases and then returns to normal levels.
C
The air density decreases and then returns to normal levels.
D
The air density increases and decreases repeatedly before returning to normal.
4

Emissions from alpha decay require the least amount of shielding.Which best describes why the emissions from alpha decay are so easily blocked compared to the emissions of other types of radioactive decay?

A
Alpha decay releases visible light, which has less energy than the light released during gamma decay.
B
Alpha decay releases particles that have less mass and charge than the particles released during beta decay.
C
Alpha decay releases particles that have less mass and charge than the particles released during gamma decay.
D
Alpha decay releases particles that have more mass and charge than the particles released during beta decay.
5

A charge of 8.4 × 10–4 C moves at an angle of 35° to a magnetic field that has a field strength of 6.7 × 10–3 T.

A
9.1 × 10–5 m/s
B
1.3 × 10–4 m/s
C
7.6 × 103 m/s
D
1.1 × 104 m/s
6

Takumi works in his yard for 45 minutes each Saturday. He works in the morning, and he wears sunscreen and a hat each time he works in the yard.What does Takumi hope to reduce through his actions?

A
the likelihood of stochastic effects, such as DNA mutations
B
the severity of stochastic effects, such as cancer
C
the severity of non-stochastic effects, such as cancer
D
the likelihood of non-stochastic effects, such as radiation sickness
7

What is the main difference between a permanent magnet and a temporary magnet?

A
A permanent magnet is made of a ferromagnetic material, while a temporary magnet is not.
B
A temporary magnet attracts only metal objects, while permanent magnets attract both metal objects and other magnets.
C
The domains in a temporary magnet easily lose alignment, but the domains in a permanent magnet keep their alignment.
D
There are domains in a permanent magnet, but not in a temporary magnet.
8

Which shows the correct order of processes leading up to the formation of a main sequence star?

A
Gases condense to form a nebula, gravity causes the nebula to collapse and spin, nuclear fusion occurs, and a protostar forms.
B
A protostar forms, nuclear fusion occurs, gases condense to form a nebula, and gravity causes the nebula to collapse and spin.
C
Gases condense to form a nebula, gravity causes the nebula to collapse and spin, a protostar forms, and nuclear fusion occurs.
D
A protostar forms, gases condense to form a nebula, gravity causes the nebula to collapse and spin, and nuclear fusion occurs.
9

What is the best description of a wave?

A
a pulse that carries energy
B
a disturbance that moves matter
C
a medium disturbed by a vibration
D
matter that is moved from one place to another
10

Force F acts between two charges, q1 and q2, separated by a distance d.

A
F
Option A
B
F
Option B
C
F
D
2F
11

Which best explains why infrared waves are ineffective for treating cancer?

A
They have frequencies that are too high to kill cancer cells.
B
They have short wavelengths, which can be harmful to healthy cells.
C
They do not transfer enough energy to destroy cancer cells.
D
They have long wavelengths, which can be harmful to healthy cells.
12

A photon has a frequency of 7.3 × 10–17 Hz. Planck’s constant is 6.63 × 10–34 J•s. The energy of the photon, to the nearest tenths place, is × 10–50 J.

Answer not available
13

A current of 1.8 A delivers 2.5 C of charge.How much time was required?

A
0.70 s
B
0.72 s
C
1.4 s
D
4.5 s
14

A –0.06 C charge is placed is in a uniform electric field with a strength of 200 N/C. What is the magnitude and direction of the force on the charge?

A
12 N in the opposite direction of the field
B
12 N in the same direction of the field
C
3333 N up in the opposite direction of the field
D
3333 N in the same direction of the field
15

Which statement is part of Dalton's atomic theory?

A
Matter is composed of small particles called atoms.
B
Atoms can be divided into their subatomic particles.
C
Atoms are able to be seen with proper spectroscopy equipment.
D
Chemical reactions can change atoms from one type to another.
16

Which changes in an electric motor will make the motor stronger? Select 3 options.using a stronger permanent magnetusing a weaker permanent magnetincreasing current in the electromagnetdecreasing current in the electromagnetincreasing the distance between the magnetsdecreasing the distance between the magnets

A
using a stronger permanent magnet
B
using a weaker permanent magnet
C
increasing current in the electromagnet
D
decreasing current in the electromagnet
E
increasing the distance between the magnets
F
decreasing the distance between the magnets
17

The two waves shown here are the same distance from point X and are traveling toward each other.

Question illustration
A
0.0 cm
B
1.0 cm
C
2.0 cm
D
4.0 cm
18

The wave shown below is produced in a rope.Which shows the motion of the rope at Point P as the wave passes through it?

Question illustration
A
A dot with a vector drawn right and a vector drawn left.
Option A
B
A dot vector drawn up and vector drawn down.
Option B
C
A dot with a vector drawn up to the right and a vector drawn down to the left.
Option C
D
A dot with a vector drawn up to the left and a vector drawn down to the right.
Option D
19

A boat moves up and down on a lake as a wave passes by. If the boat oscillates 10 times in 2 seconds, what is the period of the wave?

A
0.2 seconds
B
2 seconds
C
5 seconds
D
10 seconds
20

Which diagram best illustrates the magnetic field of a bar magnet?

A
A bar magnet with a north and south pole. Field line vectors are leaving the north pole and curl around to the south pole.
Option A
B
A bar magnet with a north and south pole. Field line vectors are leaving the south pole and curl around to the north pole.
Option B
C
A bar magnet with a north and south pole. Field line vectors are leaving the north pole and curl around to the south pole.
Option C
D
A bar magnet with a north and south pole. Field line vectors are leaving the south pole and curl around to the north pole.
Option D

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