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WARRIOR [948]
3 years ago
5

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.

Physics
1 answer:
irakobra [83]3 years ago
3 0

Answer:

Answer D: The grass extends the time of the collision.

Explanation:

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What planet has a red surface
muminat

Answer:

Mars has a red surface the sun is solar

star so the only thing left is mars

Explanation:

Hope this helped :)

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3 years ago
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Lemon trees receiving the most water produced the most lemons. What is the independent variable, the dependent variable, and the
Veseljchak [2.6K]
The lemon trees will always be the same so they are the constants. The independent variable is the water amount because it is changing. The dependent variable is the amount of lemons because it is the variable being tested. (If we change the amount of water how many lemons will be produced?)

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Thoughts about Genetically Modified Crops
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On a journey of 600 km, a train was delayed 1 hour and 30 min after having covered 1 4 of the way. To arrive on time at the dest
mars1129 [50]

Answer:

The train travelled 10hours.

Explanation:

Using speed= distance/time ...eq1

Let the time taken by train to cover the journey be t.

Let the speed of train be s

Time= distance/speed ...eq2

Time t =600/s ...eq3

The train is delayed for 1 1/2 hours=3/2 hours

Train increased by 15km/hr.

Train travelled 1/4 of 600k.= 150km.

Speed increased by s + 15 to cover the remaining 450km

t = 150/s + 400/(s + 15) + 3/2 ..eq4

Equating eq3 and 4

600/s= 150/s + 460/(s + 15) + 3/2

450/s = 3/2 + 450/(s + 15)

3s^2 + 45s -13500=0

Solving the quadratic equation

S= -45 +-sqrt(45^2-4(3×13500)/2×3

S= 60 , -75

Hence speed of train is 60km/hr

Using eq 2 distance/speed=time

600/60=10

t= 10hours

5 0
3 years ago
2. Keith took a cube and measured the mass and volume of a
galben [10]

Answer:

<h2>6 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 36 g

volume = 6 cm³

We have

density =  \frac{36}{6}  = 6 \\

We have the final answer as

<h3>6 g/cm³</h3>

Hope this helps you

7 0
2 years ago
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