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Musya8 [376]
3 years ago
9

Observations that deal with descriptions that cannot be expressed in numbers are called a. manipulated observations. c. qualitat

ive observations. b. quantitative observations. d. operational observations. Please select the best answer from the choices provided A B C D
Physics
1 answer:
ratelena [41]3 years ago
5 0

Answer:

qualitative observations.

Explanation:

In a qualitative observation, the data that is dealt with is one that has to do with the sense of touch, sight, smell, taste and also hearing. This type of observation does not have anything to do with measurements that involves numbers. Examples of qualitative observation includes shapes, color, gender, citizenship.

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Which has more KE a baseball traveling at 50 mph or a baseball travelling at 100 mph? Explain.
Trava [24]
A baseball traveling at 100 mph has more kinetic energy than a baseball traveling at 50 mph because the kinetic energy = 1/2 x mass x velocity. Since the baseballs should have the same mass, the velocity is what will determine which ball has more kinetic energy. Since the 100 mph baseball has a higher velocity than the 50 mph baseball, it has more kinetic energy.
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3 years ago
If engine oil gets into the brake fluid, which of the following will happen? A. Rubber seals will swell. B. Everything should op
wlad13 [49]
The answers are A and D.

Engine oil reacts with rubber, changing its properties and causing it to expand. This will compromise rubber seals in the brake system and lead to a failure.


4 0
4 years ago
Read 2 more answers
Find your mass if a scale on earth reads 650 N when you stand on it.
netineya [11]

Weight = (mass) x (gravity)

Acceleration of gravity on Earth = 9.8 m/s²

                                           Weight on Earth = (mass) x (9.8 m/s²)

Divide each side by  (9.8 m/s²):          Mass = (weight) / (9.8 m/s²)

                                                            Mass = (650 N) / (9.8 m/s²)

                                                           Mass = 66.33 kg  (rounded)
 
7 0
4 years ago
What must be true if a waves wavelength is short ?
dem82 [27]

Answer: So, if the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle can pass in a shorter amount of time. ... That means that longer wavelengths have a lower frequency. Conclusion: a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency!

4 0
3 years ago
An eagle carrying a trout flies above a lake along a horizontal path. The eagle drops the trout from a height of 6.1 m. The fish
Snezhnost [94]

Answer:

7.1 m/s

Explanation:

First, find the time it takes for the fish to reach the water.

Given in the y direction:

Δy = 6.1 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

6.1 m = (0 m/s) t + ½ (9.8 m/s²) t²

t = 1.12 s

Next, find the velocity needed to travel 7.9 m in that time.

Given in the x direction:

Δx = 7.9 m

a = 0 m/s²

t = 1.12 s

Find: v₀

Δx = v₀ t + ½ at²

7.9 m = v₀ (1.12 s) + ½ (0 m/s²) (1.12 s)²

v₀ = 7.1 m/s

4 0
4 years ago
Read 2 more answers
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