| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.02 |
| Score | 0% | 60% |
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
element |
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molecule |
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compound |
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atom |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
Which of the following is the formula for work?
\(W = {F}{d}\) |
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\(W = {{F}\over{d}}\) |
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\(W = {\vec{F} \over \vec{d} }\) |
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\(W = \vec{F}\vec{d}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
Work is measured in:
horsepower |
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watts |
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amps |
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joules or newton-meters |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meters (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
Which of the following is the correct order for types of radiation from longest to shortest wavelength?
visible light → ultraviolet light → radio waves |
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infrared waves → microwaves → ultraviolet light |
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microwaves → radio waves → visible light |
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radio waves → visible light → gamma rays |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.
Which of the following is the narrowest classification of life?
domain |
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family |
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genus |
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species |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.