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pickupchik [31]
4 years ago
6

Where might Michael look to find ideas about what the teacher thinks is important information to be learned for a test? a.Vocabu

lary lists and flashcardsc.Pretests and quizzesb.His notesd.B and C only
Physics
2 answers:
masya89 [10]4 years ago
8 0
D. B and C only
My sister just took the test and im sitting next to her and D is the correct answer

Serga [27]4 years ago
3 0

Answer:

D: B and C only

Explanation:

Although vocabulary lists and flash cards may assist you in preparing for a test, if you intend to focus your studying to what the teacher thinks is important, a good idea would be to look at past papers (which can include tests that have been written before or quizzes) and your own notes.

When a teacher teaches a certain topic, they usually focus and explain the parts of that topic that they want people to understand, and if they specifically want people to understand one certain section, there is a high chance that they will put that topic in the test.

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A block of mass 8 m can move without friction
nekit [7.7K]

Answer:

Let M1 = 8 kg and M2 = 34 kg

F = M a = (M1 + M2) a

F = M2 g     the net force accelerating the system

M2 g = (M1 + M2) a

a = M2 / (M1 + M2) g = 34 / (42) g = .81 g = 7.9 m/s^2

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2 years ago
Scientists track _________________ to be able to predict geomagnetic storms and technological disturbances on Earth
Misha Larkins [42]
A. Sunspots and solar storms
6 0
3 years ago
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What happens if sulfur forms an ionic bond with another element
bija089 [108]

Answer:

The sulfur will accept the electrons

Explanation:

8 0
3 years ago
A train at rest emits a sound at a frequency of 1057 Hz. An observer in a car travels away from the sound source at a speed of 2
il63 [147K]

Answer:

993.52 Hz

Explanation:

The frequency of sound emitted by the stationery train is 1057 Hz.

The car travels away from the train at 20.6 m/s.

The frequency the observer hears is given by the formula:

f_o = \frac{v - v_o}{v}f

where v = velocity of sound = 343 m/s

vo = velocity of observer

f = frequency from source

This phenomenon is known as Doppler's effect.

Therefore:

f_o = \frac{343 - 20.6}{343} * 1057\\ \\f_o = 322.4 / 343 * 1057\\\\f_o = 993.52 Hz

The frequency heard by the observer is 993.52 Hz.

4 0
4 years ago
What is the average de Broglie wavelength of oxygen molecules in air at a temperature of 27°C? Use the results of the kinetic th
asambeis [7]

Answer:

\lambda = 2.57 \times 10^{-11} m

Explanation:

Average velocity of oxygen molecule at given temperature is

v_{rms} = \sqrt{\frac{3RT}{M}}

now we have

M = 32 g/mol = 0.032 kg/mol

T = 27 degree C = 300 K

now we have

v_{rms} = \sqrt{\frac{3(8.31)(300)}{0.032}

v_{rms} = 483.4 m/s

now for de Broglie wavelength we know that

\lambda = \frac{h}{mv}

\lambda = \frac{6.6 \times 10^{-34}}{(5.31\times 10^{-26})(483.4)}

\lambda = 2.57 \times 10^{-11} m

7 0
3 years ago
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