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SpyIntel [72]
3 years ago
12

A farmer conducts an experiment to determine whether or not feeding his milk cows an organic diet affects the taste of the cow's

milk. He selects two cows and feeds them equal amounts of food. One cow receives organic food and the other cow receives food that is not organic. The farmer concludes cows that eat organic food produce milk that tastes better. Based on his experiment, the farmer develops an advertising campaign promoting his milk as better tasting because his cows are fed organic food. Why might some consumers find his advertising misleading?
a)Because the farmer did not offer taste testing for the public before advertising.b)Because the farmer is not offering a return policy for the milk in the event that his customers do not like the taste.c)Because the farmer tested only 2 cows giving insufficient data to from a reliable conclusion.
Physics
2 answers:
valentinak56 [21]3 years ago
8 0
I think it would be C. Because if the farmer only tests two cows, it could be different with other cows. But it may also be B, but I think most likely it would be C.
Veseljchak [2.6K]3 years ago
3 0

Answer: c) Because the farmer tested only 2 cows giving insufficient data to from a reliable conclusion.

Explanation:

The independent variable in this experiment is the food the effect of which is required to be observed on the cow milk taste. The cow milk taste is the dependent variable.

The results of this experiment can be misleading this is because of the fact that the sample size for the experiment was low that is just 2 cows. This cannot help to decide that the cow which receives the organic food yields tasty milk it may dependent upon the cow species, health of the cow and other factors.    

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The siren on an ambulance emits a sound of frequency 2.80×103Hz. If the ambulance is traveling at 26.0 m/s (93.6 km/h or 58.2 mi
Norma-Jean [14]

To solve this problem it is necessary to apply the concepts related to the described wavelength through frequency and speed. Mathematically it can be expressed as:

\lambda = \frac{v}{f}

Where,

\lambda = Wavelength

f = Frequency

v = Velocity

Our values are given as,

f = 2.8*10^3Hz

v = 340m/s \rightarrow Speed of sound

Keep in mind that we do not use the travel speed of the ambulance because we are in front of it. In case it approached or moved away we should use the concepts related to the Doppler effect:

Replacing we have,

\lambda = \frac{340}{2.8*10^3}

\lambda = 0.1214m

Therefore the frequency that you hear if you are standing in from of the ambulance is 0.1214m

5 0
3 years ago
PLZ HELP 150 POINTS AND BRAINLIEST
kondor19780726 [428]

Answer:

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If you apply a force to the wheel (the handle), the wheel spins and multiplies the effort to make the output force of the axle (shaft) greater.

The drive shaft, which on most cars runs the length of the vehicle to the rear wheels, turns as the combustion engine burns gasoline. The turning drive shaft sends power to the rear axle and wheels, which cause them to turn as well, moving the car forward

There some moments when the steering wheel becomes stiff and hard to turn. From irregular servicing, lack of fluid oil to low tyre pressure or bad wheel alignment, any of these could be the cause

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4 0
3 years ago
In July 2005, NASA's "Deep Impact" mission crashed a 372-kg probe directly onto the surface of the comet Tempel 1, hitting the s
eimsori [14]

Question:

(a) What change in the comet’s velocity did this collision produce? Would this change be noticeable? (b) Suppose this comet were to hit the earth and fuse with it. By how much would it change our planet’s velocity? Would this change be noticeable? (The mass of the earth is 5.97×1024kg.)

Answer:

The answers to the question are;

(a) The change in the comet’s velocity produced by the collision is 2.86 × 10⁻⁶km/h or 7.944 × 10⁻⁷ m/s

(b) It would change our planet’s velocity by  6.70× 10⁻⁸ km/h or 1.86× 10⁻⁸ m/s

Change is too small to be noticeable

Explanation:

We not that the question is about conservation of liner momentum

Therefore we have, by listing out the known parameters

m₁ = Mass of "Deep Impact" = 372 kg

m₂ = Mass of Tempel 1 comet  = (0.1 to 2.5) × 10¹⁴ kg,

v₁ = Vaelocity of "Deep Impact" = 37000 km/h

v₂ = Velocity of Tempel 1 comet = 40000 km/h

From the principle of linear momentum, we have, for both bodies moving in opposite direction;

m₁×v₁ + m₂×v₂ = m₁×v₃ + m₂×v₃ since it was a crash, it is assumed that they both have the same final velocity

This gives

372 kg ×37000 km/h  - 0.1 × 10¹⁴ kg × 40000 km/h = (372 kg + 0.1 × 10¹⁴ kg )×v₃

13764000 kg·km/h - 4.0 × 10¹⁷  kg·km/h = 10000000000372×v₃

v₃ = (-399999999986236000 kg·km/h)/10000000000372 = -39999.999997 km/h ≈ - 40000  km/h in the direction of Deep Impact

Change in comet velocity

= 40000  km/h - 39999.999997 km/h

= 2.86 × 10⁻⁶km/h = 7.944 × 10⁻⁷ m/s

(b) If the colission is with earth, we have

m₃ = Mass of earth

From the principle of conservation of linear momentum, we have

m₂v₂+m₃ v₃ = (m₂ + m₃) v₄

v₃ = Initial velocity of Earth = 0 km/h

m₃ = Mass of Earth = 5.97 × 10²⁴ kg

Therefore, pluggin in the vaalues gives

0.1 × 10¹⁴ kg × 40000 km/h + 5.97 × 10²⁴ kg × 0 km/h = (0.1 × 10¹⁴ kg + 5.97 × 10²⁴ kg) × v₄

Therefore,

v₄ = (4.0 × 10¹⁷  kg·km/h + 0 kg·km/h)/ (5970000000010000000000000 kg)

= 6.70× 10⁻⁸ km/h = 1.86× 10⁻⁸ m/s

Change is too small

5 0
3 years ago
if you moved closer and closer to a star, how would its apparent magnitude change? a. it would increase. b. it would decrease. c
Serga [27]
As you move closer to the star, it appears brighter. Brighter magnitudes are lower numbers, so the star's apparent magnitude would decrease.
7 0
3 years ago
Read 2 more answers
PLEASE HELP
maxonik [38]

Answer:

Flashlight

Explanation:

Flashlight use batteries and batteries are dc

5 0
3 years ago
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