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kifflom [539]
4 years ago
5

Dark energy is an unexplained force that is causing _____. stars to explode the expansion of the universe to accelerate the univ

erse to contract galaxies to group together
Physics
2 answers:
GalinKa [24]4 years ago
3 0
The best choice would be the second statement. Dark energy is an unexplained force that is causing the expansion of the universe to accelerate. It is an unknown form of energy which is the most accepted hypothesis during the 1990s to explain the observations that the universe is expanding at a rate that is accelerating.
Tatiana [17]4 years ago
3 0

Answer:

Dark energy is an unexplained force that is causing the expansion of the universe to accelerate.

Explanation:

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A __________ provides a visual summary of the improvements that a data mining project provides on a binary classification proble
babymother [125]

Answer:

Option (B)

Explanation:

A lift chart usually refers to a graphical representation that is mainly used in order to improve the drawbacks of a mining model by making a comparison with any random guess, and also helps in determining the changes that occur in terms of lift scores.

It describes the binary classification of the problems associated with the mining activity. This type of chart is commonly used to differentiate the lift scores for a variety of models, and picking the best one out of all.

Thus, the correct answer is option (B).

5 0
4 years ago
Will give correct answer brainliest
Tasya [4]

Answer:

the answer is a

Explanation:

3 0
3 years ago
The area of the piston to the master cylinder in a hydraulic braking system of a car is 0.4 square inches. If a force of 6.4 lb
Anit [1.1K]

Answer:

The force applied on one wheel during braking = 6.8 lb

Explanation:

Area of the piston (A) = 0.4 in^{2}

Force applied on the piston(F) = 6.4 lb

Pressure on the piston (P) = \frac{F}{A}

⇒ P = \frac{6.4}{0.4}

⇒ P = 16 \frac{lb}{in^{2} }

This is the pressure inside the cylinder.

Let force applied on the brake pad = F_{1}

Area of the brake pad (A_{1})= 1.7 in^{2}

Thus the pressure on the brake pad (P_{1}) =  \frac{F_{1} }{A_{1} }

When brake is applied on the vehicle the pressure on the piston is equal to pressure on the brake pad.

⇒ P = P_{1}

⇒ 16 = \frac{F_{1} }{A_{1} }

⇒ F_{1} = 16 × A_{1}

Put the value of A_{1} we get

⇒ F_{1} = 16 × 1.7

⇒ F_{1} = 27.2 lb

This the total force applied during braking.

The force applied on one wheel = \frac{F_{1} }{4} = \frac{27.2}{4} = 6.8 lb

⇒ The force applied on one wheel during braking.

7 0
3 years ago
Hugs 5 things your dog might do when hugged
Nezavi [6.7K]
1. growl: most certainly the dog is going to start growling, but not in a negative, aggressive way, but rather in a surprised, amused way
2. li.ck: the dog will definitely li.ck you, as this is what dogs do when approached
3. pant: dogs pant all the time, especially if it's hot outside, so hugging them makes no difference
4. play: they will want to play with you once they see you love them and want to be around them
5. try to run: some dogs aren't really into hugging, which is why they will try to run away from you because they are confused
4 0
3 years ago
The natural resistance of any object to change its speed is called _____.
Stella [2.4K]
This natural resistance is known as inertia. =)
6 0
3 years ago
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