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Elina [12.6K]
3 years ago
5

During a test, a solution placed on a sheet

Physics
1 answer:
suter [353]3 years ago
3 0

Answer:

B. Acidic

Explanation:

Neutral an Basic solutions wouldn't create any reaction

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Resistance to the motion of an automobile consists of road friction, which is almost independent of speed, and air drag, which i
Troyanec [42]

Answer:

73.52983 Hp

Explanation:

m = Mass of car = \dfrac{W}{g}

W = Weight of car = 12000 N

a = Acceleration = 0.96 m/s²

Velocity of the car

v=82\times \dfrac{1000}{3600}\\\Rightarrow v=\dfrac{82}{3.6}\\\Rightarrow v=\dfrac{41}{1.8}

From the question

F=300+1.8v^2\\\Rightarrow F=300+1.8\times \left(\dfrac{41}{1.8}\right)^2\\\Rightarrow F=1233.88\ N

Balancing the forces

\dfrac{P}{v}-1233.88=ma\\\Rightarrow P=(ma+12000)v\\\Rightarrow P=\left(\dfrac{12000}{9.81}\times 0.96+1233.88\right)\dfrac{41}{1.8}\\\Rightarrow P=54853.26055\ W=\dfrac{54853.26055}{746}\\\Rightarrow P=73.52983\ Hp

The power is 73.52983 Hp

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4 years ago
3. A car travels at 30mph for 2hours and then 40mph
svet-max [94.6K]

Answer:

1. 60/90

2.67/63

Explanation:

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3 years ago
Which number is not rounded correctly?
DedPeter [7]
The answer would be <span>B. 210.8 rounded to 210

When rounding, if the digit you are rounding is equal to or larger than 5, you round the number up. For example: 15 rounded up to 20. 99 rounded up to 100.

210.8 would be rounded up to 211 
because the 8 is greater than five, so you have to round it up.</span>
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3 years ago
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What does matter make up
Gnoma [55]

any thing which has mass and occupie some space is called matter

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4 years ago
What best describes the goals of scientific investigation and technological development?
klemol [59]
<span>Scientific investigation aims to advance knowledge of the world around us so as to encourage technological development with the intended purpose of finding cures for disease, protecting natural resources, and enhancing human's productivity in all areas.</span>
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3 years ago
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