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wariber [46]
2 years ago
11

The car travels 52m in 21 seconds before it comes to a complete stop after the driver applies the brakes. What was the car's ini

tial speed?
Physics
1 answer:
prisoha [69]2 years ago
5 0

Answer:

2.48 m/s

Explanation:

D=vt

52 = V 21

V= 52/21=2.47m/s

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A need the answers pleaseeeee
IRISSAK [1]

It's just asking you to sit down and COUNT the little squares in each sector.

It'll help you keep everything straight if you take a very sharp pencil and make a tiny dot in each square as you count it.  That way, you'll be able to see which ones you haven't counted yet, and also you won't count a square twice when you see that it already has a dot in it.

(If, by some chance, this is a picture of the orbit of a planet revolving around the sun ... as I think it might be ... then you should find that both sectors jhave the same number of squares.)  

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3 years ago
The weight of an apple at 4r from earth is of that on earth
iris [78.8K]
W = m.g = weight
g = Gme/Re**2 where G= universal gravitational constant , Re= radius of the earth
me= mass of the earth
therefore it weighs 16 times less
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2 years ago
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Example of electrical to mechanical​
Sonja [21]

Answer:

dynamo generator could be the right ans

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2 years ago
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A 2.5 m tall steel cylinder has a cross sectional area of 1.5 mA 2 EA. At the bottom with a height of 0.5 m is liquid water and
KatRina [158]

Answer:

124 kPa

Explanation:

The highest pressure in the water is in the bottom of the cylinder. The reason is because all the weight of the water and the gasoline puts some pressure plus the atmospheric air. So, the absolute pressure would be the one exerted by the atmosphere, the gasoline and the water and is calculated as follows:

P=P_{atm}+P_{gas}+P{water}\\P=110 000Pa +1.0m*9.8m/s^2*925kg/m^3+0.5m*1000kg/m^3*9.8m/s^2\\P=123974Pa≈124 kPa

3 0
3 years ago
Akia is balancing the equation Na + H2O NaOH + H2. He tries to find the coefficients that will balance the equation.
Pepsi [2]
<h3><u>Answer;</u></h3>

A: by counting up each individual atom and make sure the atom numbers are the same in the reactants and the products

<h3><u>Explanation;</u></h3>
  • <em><u>According to the law of conservation of mass, the mass of reactants should always be the same as the mass of the products in a chemical equation. </u></em>Therefore, <em><u>the number of atoms of each element in a chemical equation should always be the same on both sides of the equation, </u></em>that is the side of reactants and side of products.
  • Thus, <em><u>any chemical equation requires balancing to ensure that the number of atoms of each element is equal in both sides of the equation</u></em>. Balancing is a try and error process that ensures that the law of conservation of mass holds.
  • In this case, the balanced equation would be;                                               2Na +2H₂O → 2NaOH +H₂

5 0
3 years ago
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