Choose the letter of the best description of the nature of light:

Physics

1 answer:

Andreas93 [3]3 years ago

6 0

C. Light sometimes behaves like waves and at other times like particles.

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What is 1.2 kg converted into mg.<br> I need to know for step by step please?

astra-53 [7]

Here’s a good photo to reference when converting in the metric system.

Each time you move down a step you move the decimal to the right, each time you move up a step you move the decimal to the left.

We are going from 1.2 kg or kilograms, which is at the very top left of the ladder. To get to mg or milligrams, we would have to make six jumps, so we’d move the decimal over six times.

1.2 > 12. > 120. > 1200. > 12000. > 120000. > 1200000.

So our final answer would be 1,200,000mg.

4 0

3 years ago

After measuring a sample of individuals, a researcher finds that one participant's score is three times bigger than another part

Strike441 [17]

Answer:

<u>Ratio</u> scale.

Explanation:

Ratio scale is a quantitative scale used for variable measurement which allows any researcher to compare the intervals of the measured parameter.
Ratio scale is the 4th level of measurement having a zero point or character of origin.
Ratio scale possesses most of the features of the other three variable measurement scale i.e ordinal, nominal and interval scales.
Nominal variables are used to name, or label a series of values.
Ordinal scales provide a sufficient amount of information about the order of choices, such as one would be able to understand from using a customer satisfaction survey, while the interval scales give us the order of values and also about the ability to quantify the difference between each one.

3 0

3 years ago

An astronaut is out in space with an extremely precise timing device measuring the speed of various fast‑moving objects. A laser

Leviafan [203]

Answer and Explanation:

with reference to Einstein's theory of special relativity, the speed of an electromagnetic radiation, here, laser will not change in any inertial frame or remains same irrespective of any change in inertial frame.

Therefore, the speed of light measured in both the cases, i.e., in astronaut's reference frame and spaceship's reference frame will be equal to the speed of light in vacuum, i.e., $3\times 10^{8} m/s$ .

The laser gun's speed in astronaut's reference frame is the same as the speed of the spaceship as it mounted on it, i.e., the speed of the laser gun is 200 million m/s.

The laser gun's speed measured in spaceship's reference frame will be zero, as it is mounted on the spaceship and is stationary in the spaceship's reference frame.

5 0

3 years ago

A boat is traveling at a speed of 36 km/h. It has to travel a distance of 210 km. How long will it take?

oksian1 [2.3K]

Answer:

If the boat is going 36 km/h, then it will take about 5.8 hours to travel a distance of 210 km/h.

Explanation:

To calculate time, you have to divide the distance by the speed.

In this case, we take 210 and divide it by 36. The answer you will get is 5.83...

6 0

3 years ago

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